ENG SS Definitions Relays 0712

7/29/2019 ENG SS Definitions Relays 0712

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07-2012, Rev. 0712www.te.com 2012 Tyco Electronics Corporation,a TE Connectivity Ltd. company

Datasheets and product specificationaccording to IEC 61810-1 and to be usedonly together with the Definitions section.

Datasheets and product data is subject to theterms of the disclaimer and all chapters ofthe Definitions section, available athttp://relays.te.com/definitions

Datasheets, product data, Definitions sec-tion, application notes and all specificationsare subject to change.

1

Automotive, General Purpose and Signal Relays

Defnitions

DenitionsGeneral page 2

Denitions page 3

Handling, Processing, Testing and Use

Handling/Logistics page 16Processing page 16

Testing page 18Use page 19


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Defnitions (Continued)

Specication

In order to improve perormance and quality, we continuously develop our

products We reserve the right to change technical parameters and product

specications The technical data listed are or description purposes o the

components only and are not an agreement and do not guarantee specic

characteristics and parameters; or detailed questions, please contact our

application support Drawings, photos data and descriptions are subject to

change without prior notice

Availability

The databooks and datasheets list a broad range o products and the

descriptive part code structure (product code) does allow a large number

o possible variations, but not all possible variations are dened as standard

types in the current product portolio (product code) and thus may not beincluded in the product range Some products are normally maintained in

stock or immediate delivery, or are available within 'normal leadtimes or

industry'; however, there may be extended leadtimes or some non-stock

items Special versions to customer specications may be supplied

Additionally, minimum quantity requirements apply and these requirements

may dier rom indicated packaging units Please consult with your TE sales

organization or authorized distributor regarding availability and minimum

order requirements

Right to change the availability and delivery conditions reserved

'Denitions', datasheets, product data, application notes and all specica-

tions are subject to change

Trademark

TE Connectivity, TE connectivity (logo), TE (logo), TE Tyco Electronics (logo),

AXICOM, OEG, P&B, Potter & Brumeld, PRODUCTS UNLIMITED andSCHRACK are trademarks

Technical data

Unless otherwise stated, the stated technical data are based on laboratory

tests under standardized conditions and are within the conditions o normal

use or these components The vast number o infuencing actors does not

allow TE to test its products or all imaginable applications and processes

Furthermore, the large number o possible variations within a relay amily

makes it impossible to give a comprehensive descr iption o the dierent

characteristics or all variants in one datasheet Typical data are derived rom

the standard versions

The decision on the suitability o a specic component is solely responsibility

o the user To ensure the suitability o the product or a specic application

the user has to test these products beore the use under the most stringent

conditions they will be exposed to in the actual application Taking into

consideration the aspects o operational availability and saety, the user hasto rate the actual service lie in an adequate relation to the expected lie o

the relay

The use o the relay beyond its specied characteristics or beyond su-

ciently tested lie expectancy bears the risk o dangerous conditions; the

user has to prevent such conditions by adequate measures, being entirely

responsible in case o non-observance

All product data are intended or users with knowledge and experience in

the application o such specications The utilization is at the entire risk o

the user

The user has to veriy the accordance with exist ing regulations and relevant

standards or the application; in particular with reerence to the insulation

requirements as unction o applied voltages and ambient conditions

The standards (eg IEC 61810 'Electrical endurance') are based on the

principal assumption o occurences o malunctions such as malunction

to make contact, malunction to break or as insucient dielectric strengthSuch malunctions have to be taken into consideration and must not ge-

nerate risks Depending on the specic load, its characteristics and power

in the contact set, a relay malunction situation may generate various risks

such as malunction o the equipment and its controls, electrical shock, the

risk o excessive heat and re and others It is in the entire responsibility o

the user to provide or additional precautions against such possible eects

according to the relevant application standards

Protection against risks under all operation conditions even in case o

malunction can only be ensured by the design o the equipment as well

as by application instructions or the end user; it is the responsibility o the

manuacturer o the equipment to take the appropriate measures Incorrect

connections by the user may lead to risks, aulty operation and abnormal

heating or re It is also the responsibility o the manuacturer o the equip-

ment to take appropriate measures to avoid potential danger o electrical

shock by preventing access to live parts o the relay including parts as

terminals and accessories

General

While TE Connectivity and its aliates have made every reasonable eort to

conrm the accuracy o the inormation contained in datasheets and cata-

logs, TE Connectivity cannot assure that this inormation is error ree For

this reason TE Connectivity does not make any representation or oer any

guarantee that such inormation is accurate, correct, reliable or current or

does not inringe any intellectual property rights TE Connectivity reserves

the right to make any adjustments to the inormation at any time

TE Connectivity expressly disclaims any implied warranty regarding

the inormation contained in the datasheets and catalogs, including,

but not limited to, the implied warranties o merchantability or ftness

or a particular purpose. TE Connectivitys only obligations and liability

with respect to its products are governed solely by the TE Connecti-

vitys Standard Terms and Conditions o Sale or these products or the

respective written agreement under which the products are supplied.

TE CONNECTIVITY WILL IN NO CASE BE LIABLE IN ANY CIRCUM-

STANCES FOR ANY INCIDENTAL, INDIRECT, CONSEQUENTIAL

DAMAGES OR LOSS OF PROFITS ARISING FROM OR IN CONNEC-

TION WITH THE INFORMATION CONTAINED IN ITS DATASHEETS AND

CATALOGS OR IN CONNECTION WITH ITS PRODUCTS, INCLUDING,

BUT NOT LIMITED TO, THE SALE, RESALE, USE OR MISUSE OF ITS

PRODUCTS. USERS SHOULD RELY ON THEIR OWN JUDGMENT TO

EVALUATE THE SUITABILITY OF A PRODUCT FOR A CERTAIN PUR-

POSE AND TEST EACH PRODUCT FOR ITS INTENDED APPLICATION.


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Bandwidth

The range o requencies or which the perormance a lls within the specied

limits

Biurcated contact

See > 'Twin contact'

Bistable relay, latching relay

In a bistable or latching relay the contacts remain in the last switching positi-

on once the coil input voltage is disconnected

Bistable relays only require a short set respectively reset pulse and do not

need any energization once the switching position changed Unless otherwi-

se stated the bistable relays can endure a permanent energization

NOTE: or some relay series a permanent coil power supply is not permit-

ted; in this case the maximum energization duration or the required coil

power reduction is indicated in the respective datasheet

Bistable relay, switching characteristics

In a bistable relay, the contacts remain in the last switching position ater the

input voltage is disconnectedNOTE: Unlike monostable relays which return to their predened contact

rest state in case o power supply break down and thus might be showing

a ail sae behaviour, bistable relays do not automatically return to such

predened position Thereore the application and relay control has to be

designed to cover such situations and bistable relays should not be used in

applications that are rated according to ISO/TS 16949 753 'Product Identi-

cation and Traceability'

NOTE: Even though the bistable relays are leaving production preerrably

in reset contact position, the position o the contact (set position/reset

position) is not dened at delivery unless otherwise stated The user needs

to check the contact position and to set/reset the relay to the required

position

Bounce

An unintentional phenomenon that can occur during the making or breaking

o a contact circuit when the contact elements touch successively and

separate again beore they have reached their nal position

Bounce time

The time rom the rst to the last closing or opening o a relay contact

Unless otherwise stated the indicated times are maximum values and are or

energization with rated voltage, without any components in series or parallel

to the coil, and at reerence temperature Also see > 'Relay cycles'

Breaking capacity max.

Product o the switching current and switching voltage (in W or direct cur-

rent, in VA or alternating current) Also see > 'DC breaking capacity'

Bridging contact

Double contact conguration, where two movable contacts are mechani-

cally connected and operate simultaneously In a bridge conguration, the

load current fows rom one stationary contact via the bridge to a second

stationary contact See also table 'Contact arrangement'See > 'Form X contact', 'Form Y contact', 'Form Z contact'

AC-coil

Relays or direct energization with AC supply I not otherwise stated, the

data is given as Vrmsor 50 Hz supply

Adjacent contacts

Insulation parameters between two adjacent contact circuits (poles o a

relay), which do not have a conductive connection The level o insulation

depends on the relays design, rated voltage and ambient conditions

Ambient temperature (unction, in operation)

The temperature in the vicinity o the relay (distance according to IEC

61810-1)The minimum ambient temperature is the miniumum operating

temperature, the maximum ambient temperature is the maximum opera-

ting temperature or the use o the relay or accessory when operated This

temperature range should not be exceeded; within the indicated tempera-

ture range the ambient temperature does infuence the electrical endurance

Ambient temperature range according to IEC 61810-1 and indicated in C

Unless otherwise stated data is reerred to an ambient temperature o 23C

ApprovalsWith the approval label the independent approval agency and/or test house

conrms the compliance with the relevant product standards and/or certain

product characteristics

NOTE: the ordering code structure does allow a large number o possible

variations, but not all variations are dened as standard types (ordering

codes) and thus some relays may not be included in the list o approved

relays It is recommended that users also seek the pertinent approval les

o the agencies/laboratories and review them to ensure that the selected

product is led and meets the requirements Technical data and approved

types on request

B BEAB British Electrotechnical Approvals Board, England

E CEConformit Europenne, marking for specific productsrelating to product safety in accordance to European Laws

CQC China Quality Certification Center,Peoples Republic of China

C CSA Canadian Standards Association, Canada

D DEMKO Danmarks Elektriske Materielkontrol, Denmark

F FIMKOShktarkastuskeskus Elinspektionscentralen,Finnland

H KEMANaamloze Vennootschap tot Keuring van,Electrotechnische Materialien, Netherlands

L LLOYDs Lloyds Register of Shipping

N NEMKO Norges Elektriske Materiellkontroll, Norway

O VE sterreichischer Verband fr Elektrotechnik, Austria

S SEMKOSvenska Elektriska Materiellkontrollanstalten AB,Sweden

S SEV Eidgenssisches Starkstrominspektorat, Switzerland

t TV Technischer berwachungs-Verein, Germany

U ULUnderwriters Laboratories, Inc., USA; UL ComponentRecognition Mark for the United States

z UL UL Component Recognition Mark for Canada

Z ULUL Component Recognition Mark for theUnited States and Canada

V VDEVDE-Prfstelle, certificate of conformity with factorysurveillance, Germany


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Coil insulation system according to UL1446

These requirements cover test procedures to be used in the evaluation o

electrical insulation systems intended or connection to branch circuits rated

600V or less This standard reers to insulation systems and does not coverindividual insulating materials

Coil Operative range (graph)

Admissible range o energizing voltage with respect to the ambient tempera-

ture The upper limit is the maximum coil voltage, the lower limit is the ope-

rate voltage Umin (coil without pre-energization) and/or the operate voltage

U1 (pre-energized coil)

The diagrams are valid or single mounting o relays without thermal inter-

erence and connection wiring according to IEC 61810-1; unless otherwise

stated the data is indicated without contact load, thus not taking into

account the temperature rise due to the contact current

The use o a relay with an energizeing voltage other than the rated coil volta-

ge may lead to reduced electrical lie (mechanical and dynamic eects)

In case the application requires an energization with other than the rated

coil voltage and a recommended voltage range is indicated, the coil voltage

should be within the recommended voltage range (shaded area) to keep theeects on electrical lie to a minimum

curve 1: operate-/minimal voltage U0 (without pre-energization)curve 2: operate-/minimal voltage U1 (pre-energized coil)curve 3: maximum voltage at contact current = 0 Acurve 4: limiting voltage U2 at rated contact current Iratedrecommended voltage range (shaded area):

the coil voltage should be within the recommended voltage rangeto keep adverse eects on electrical lie to a minimum

Coil operative range or bistable relayscurve 1: operate voltage at coil temperature equal to ambient temperature

curve 2: minimum reset voltagecurve 3: maximum operate voltagecurve 4: maximum reset voltage

For bistable relays, all curves are given or pulse energization (short energi-zation duration)

Category o protection (IEC 61810)

The Relay Technology Categories (IEC 61810) describe the degree o

sealing o the relay case or its contact unit:

RT 0: unenclosed relayRelay not provided with a protective case

RT I: dust protected relayRelay provided with a case which protects its mechanism romdust

RT II: fux proo relay

Relay capable o being automatically soldered without allowingthe migration o solder fuxes beyond the intended areas Theseare the contacts, movable parts o the magnetic system and theirimmediate environment

RT III: wash tight (washable) relay

Relay capable o being automatically soldered and subsequentlyundergoing a washing process to remove fux residues withoutallowing the ingress o fux or washing solventsThe test to evaluate the sealing o the case or wash tight relays isperormed according to the IEC 60068-2-17, Qc test

NOTE - Please reer to the 'Processing' section or additional inor-mationIn service this type o relay is sometimes vented to the atmosphereater soldering or washing process; in this case the requirementswith respect to clearances and creepage distances can change

RT IV: sealed relayRelay provided with a case which has no venting to the outsideatmosphere, and having a time constant better than 2x104s inaccordance with IEC 60068-2-17

RT V: hermetically sealed relaySealed relay having an enhanced level o sealing, assuring a timeconstant better than 2x106s in accordance with IEC 60068-2-17

Changeover contact, CO contact

See > 'Form C contact, CO contact, changeover contact'

China RoHS compliance

See > 'Material substance specication' on TE's Website:

wwwtecom/customersupport/rohssupportcenter

Clearance distance

Shortest distance in air between two conductive parts or between a con-

ductive part and the accessible surace o the relay

Coil data

The coil data is specied according to IEC 61810-1

Unless otherwise indicated the data is given orn ambient temperature 23C,

n coil temperature equal to ambient temperature (cold coil, without pre-

energization),n

50Hz or AC supply,n no other devices (eg diode) in parallel or in series to the coiln single mounting o relays

Indicated data or the operative range class, is given or the minimum allo-

wed mounting distance

Unless otherwise stated a duty actor o 100% (permanently operated) is

permissible

Coil inductivity

The inductivity is a nonlinear parameter due to saturat ion eects and

depends, amongst others, on the position o the armature The value o the

relay coil inductivity depends on the measurement method and its parame-

ters Thereore the inductivity is not a generally guaranteed parameter; or

technical questions, please contact our technical support


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The most common are:

Formdescription

Shortdescription

NARMdesignator

Circuit symbol

Make contact Form A NO SPST-NO

Break contact Form B NC SPST-NC

Changeovercontact

Form C CO SPDT

Double makeon armature

Form U SPST-NO DM

Double breakon armature

Form V SPST-NC DB

Double make

contact

Form X SPST-NO DM

Double breakcontact

Form Y SPST-NC DB

Double break,double makecontact

Form Z SPDT-NC-NODB-DM

Triple makecontact

Form 3

Examples or descriptions o multi- pole congurations:

Multi poleconfigurations

Formdescription

Shortdescription

NARMdesignator

Circuit symbol

2 Makecontacts

2 Form A 2 NO DPST-NO

3 Breakcontacts

3 Form B 3 NC 3PST-NC

4 Changeovercontacts

4 Form C 4 CO 4PDT

Abbreviations

NO: normally open, NC: normally closed, CO: changeover

SPST: single pole, single throw, SPDT: single pole, double throw, DPST:

double pole, single throw

Contact current

See >n 'Rated current'n 'Limiting making current'n 'Limiting continuous current'n 'Limiting short-time current'n 'Limiting breaking current'

Contact gap

Shortest distance between the open contact points

Contact material

The list gives an overview o the most important plating- and contact materi-

als and their use in signal-, automotive and general purpose relays

The switching capacity o the contacts and the respective electrical endu-

rance depends not only on the contact material but also to a high degree on

the relay design Decisive or the application thereore is the optimal combi-

nation o the mechanical system and the contact material The characteris-

tics or certain relay types cannot be transerred to other designs, nor canthese values be used as given limits or existing products

Coil power

Power consumption o the coil at rated coil voltage and coil resistance, with

coil temperature at 23C, given as rated typical value

Coil resistance

Electrical resistance o the relay coil at reerence temperature; this value is

indicated or the coil without any other devices in parallel (eg coil suppres-

sion, diode, etc)

Coil suppression circuit

Circuit to reduce the inductive switch o voltage peak o the relay coil (EMC

protection, switch o voltage peak) Most o such circuits reduce the arma-

ture release speed, which may decrease the relay lietime, especially valid

or diodes in parallel to the coil

Note: unless otherwise specied the indicated relay data reers to coils

without any components in parallel or in series to the coil

Coil voltage

Voltage applied across the coil terminals

Coil voltage range

Voltage range at which the relay displays the operating characteristics

These specied operating characteristics are given or a constant DC supply

or sinusoidal AC supply Other operating conditions (eg pulse control,

ramp voltage, hal wave rectiying, etc) may lead to characteristics other

than specied

Coil-contact circuit data

Insulation parameters between the coil system and the contact circuit/sys-

tem

Combination o relay and socket, insulation requirements

The relay standard IEC 61810-1 has an important impact on the combina-

tion o a relay and the respective socket The relay sockets have to comply

with the requirements o IEC 61984 and the insulation reqirements o the

IEC 61810-1 Even i the socket alone ulllls or exceeds the insulation

reqirements as clearance/creepage or the relay, the combination o a relay

with a socket may reduce the creepage and lead to a lower rated insula-

tion voltage Hence restrictions or the combination relay-socket may be

the consequence, eg a reduction o the voltage range or o the pollution

degree Especially or miniature multi-pole relay and respective sockets with

small distance between the contact circuits, these restrictions have a big

impact

Apart rom the insulation properties, the thermal characteristics o the

combination relay and socket are o utmost importance (see > 'Derating

curves') As sockets rom dierent sources are not directly comparable, the

compliance with the technical specication can only be conrmed or an

approved combination relay-socket As design details and characteristics

or non TE products are beyond our control, conrmations or technical

parameters and characteristics regarding such combinations is not possible

Risks as reduced dielectric strength, re hazard, etc due to use based on

unclear or omitted data, limitations or restrictions must not be underestima-

tedNOTE: We only conrm the characteristics and parameters or the approved

combinations o relays and sockets as indicated in the catalog and datas-

heets

Contact arrangement

Dierent applications require specic switching unctions o the relay con-

tacts; various contact arrangements are specied and described in dierent

ways


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Contact protection circuits

The eect o an electrical arc causes primarily local contact erosion resul-

ting in contact wear and migration and as secondary eect the generation

o adverse atmosphere inside the relay (see > 'Electrical arc' and 'Vent hole'in processing section) These eects eventually lead to the end o the useul

lie o a relay To reduce the negative eect o the electrical arc and thus

prolong the lie o a relay, contact protection circuits are recommended

This is especially important or switching o DC applications (eg automotive

applications) The user has to ensure the correct design o the protection

circuit in the respective application, as unless designed correctly, the pro-

tection circuit may even generate adverse eects

Contact rating

In context o our datasheets this term is primarily used in context with

ratings as tested/approved by external approval agencies whereas the term

'electrical endurance' is used primarily or internal test results See > 'Electri-

cal endurance'

Indicated contact ratings or direct wiring o relays (according IEC 61810-1);

or relays mounted on sockets or when using connectors deratings may

apply

Contact resistance

Electrical resistance between the relay terminals o a closed contact,

measured with indicated measuring current and indicated source voltage

The specied contact resistance is reached reliably only above a particular

load Considerably increased contact resistances can occur with smaller

loads Ater a prolonged period o a steady state operate/release position

or storage o the relay a certain number o cycles are recommended beore

measurement o the contact resistance

According to IEC 61810-7 the ollowing measurement parameters are

applied (or general purpose relays category CC2 is applicable):

Category Load MeasurementV A V A

CC0 0.03 0.01 0.03 0.01CC1 without electrical arc 10 0.1CC2 with electrical arc 30 1

Contact style

On one side indicates the design o the contact point itsel , see >n 'Single button contact'n 'Twin contact, biurcated contact'

indicating the contact unction, see >n 'Forcibly guided contact'

as well as the total conguration o the contacts within a relayn number o poles andn contact arrangement (see > 'Contact arrangement')

Contact terms

Creepage distance

Depending on the insulation design, usually the shortest distance along the

surace o the insulating material between conductive parts according to IEC

61810-1

Cross talk

Signal intererence between adjacent conductors caused by the pick-up ostray energy

1) Plating materials:

Fine goldn best corrosion resistance, not used as solid material because too sot,

high tendency towards cold-welding, not used or only used in combi-nation with a material with resistance against cold welding Gold alloys

(AuNi, AuAg, AuPd, AuCo)n gold platings 1 m (gold fashed), only as storage protection, no

protection against aggressive atmospheren hard gold plated: very good corrosion resistance, low and stable con-

tact resistance at lowest loads, low tendency to cold weldingn dry-circuit switching (switching without current/voltage), recommended

range o application 1 V, 1 mA, 50 mW

2) Contact materials:

Silver-Palladiumn high resistance against material transer in signal DC circuits, low wel-

ding tendency, higher contact resistance than Agn circuits with medium loads, DC- and AC-circuits, recommended or

telecommunication applications

Palladium-Rutheniumn

highest resistance against material transer in signal DC-circuits, lowwelding tendency, higher contact resistance than Agn circuits with medium loads, DC- and AC-circuits, recommended or

telecommunication applications

Silver-Nickel AgNi90/10n high resistance against electrical wear, low welding tendency, higher

contact resistance than AgNi015n circuits with medium to high loads, DC- and AC-circuits, recommended

range o application 12 V, 10 mA

Fine-grain silver AgNi015n relatively low contact resistance, low resistance against aggressive

atmospheren universally applicable in medium and low load range, especially in DC-

circuits, recommended range o application 12 V, 10 mA

Silver-Tin-Oxide AgSnO2n low welding tendency, high wear resistivity with heavy loads, low mate-

rial transern circuits with high requirements to make- and break currents, DC- and

AC loads, recommended range o application 12 V, 100 mA

Tungsten Wn highest melting point, or high switching rates and low ON-timen as prerun contact in circuits with highest make loads

Silver-Cadmium-Oxide AgCdOn compliant with RoHS directive (Directive 2002/95/EC) only under time

limited exception, thereore not recommended or new designsn low welding tendency, high wear resistancen or switching o inductive loads, AC-circuits, 12 V, 100 mA

Contact materials or the use in automotive applications:

Current range Automotive load type(DC load)

Recommended contactmaterial

Switching and carrying

0.5 A < I < 10 A at 12 V

In low power

applications

AgNi0.15 or AgSnO2

Periodical switching andapprox. 106 ops,1 A < I < 10 A at 12 V

Long-life indicatorswitches

AgSnO2

Switching and carryingI > 10 A capacitive load

Lamps, Capacitors AgSnO2

Switching and carryingI > 10 A resistive andinductive load

Motors, Valves AgNi0.15 or AgSnO2

Switching high inrushI > 100 A

Lamp (e.g. H4), Sparkplugs, short circuit

AgSnO2 in special cases:AgNi20 orTungsten pre-contact


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Degree o protection - First digit:

The rst digit o the IP code indicates the degree that connection is

protected against contact with moving parts and the degree that

equipment is protected against solid oreign bodies intruding into anenclosure

0 No special protection

1 Protection rom a large part o the body such as hand or rom solid

objects greater than 50 mm in diameter

2 Protection against objects not greater than 80 mm in length and 12 mm

in diameter

3 Protection rom entry by tools, wires, etc, with a diameter or thickness

greater than 25 mm

4 Protection rom entry by solid objects with a diameter or thickness

greater than 10 mm

5 Protection rom the amount o dust that would interere with the operati-

on o the equipment

6 Dust-tight

Degree o protection - Second digit:

Second digit indicates the degree o protection o the equipment insidethe enclosure against the harmul entry o various orms o moisture

(eg dripping, spraying, submersion, etc)

0 No special protection

1 Protection rom vertically dripping water

2 Protection rom dripping water when tilted up to 15

3 Protection rom sprayed water

4 Protection rom splashed water

5 Protection rom water projected rom a nozzle

6 Protection against heavy seas, or powerul jets o water

7 Protection against temporary immersion

8 Protection against complete continuous submersion in water (up to 1

meter deep or 15 minutes)

Derating curve (sockets and relay-socket sets)

EN61984:2001 table 12: according to this standard the derating curve given

or a specic combination relay-socket and its accessories - indicates themaximum permissible continuous current (limiting continuous current) o a

socket, loaded on all contact circuits, unless otherwise stated supplied with

rated coil voltage, over the entire temperature range, measured in dense

packing (usually 3 relay-socket sets)

In case o reduced duty actor o the contact load or with higher mounting

distance up to single mounting, a higher load current is permissible Please

contact our technical support or specic data According to the standards

the derating curve is derived rom the measured curve by applying a reduc-

tion actor o 080

Other standards: the test conditions (eg UL508) dier rom the EN stan-

dard, hence under these conditions other temperature/current combinations

may be permissible; please contact our technical support or details

In case no derating curves are given, the indicated temperature and load

current reer to the approved standards or the specic product and not to

the EN61984

CTI

See > 'Tracking index'

CycleOperation/set and subsequent release/reset o a relay

Cycle time

Sum o ON and OFF time (make, break and bounce time) o a contact See

also > 'Duty actor'

dBm

Relative measure o signal power where the reerence 0 dBm is equal to one

milliwatt See also > 'Decibels'

Switching o loads at voltage and current below the max DC load breaking

capacity curve is possible or a limited number o switching operations

Unless otherwise stated, the indicated curves in the DC breaking capacity

diagram represent the load limit curve II (the arc extinguishes within 10ms

at resistive load) The breaking capacity curve is aected in both position

and shape by the contact material and relay design (contact distance, break

speed o the contacts, etc) No statement on the electrical endurance canbe derived rom these curves For practical use it is recommended to keep

a distinct margin rom the DC load breaking capacity curven Load limit curve (II) The switching arc or loads below this curve extin-

guishes within 10 ms (the relay is already in release position) Unless

otherwise stated the indicated curve or DC breaking capacity relates to

the load limit curve IIn Load limit curve (I) The switching arc o loads below this load limit curve

extinguishes during the transit time o the moving contact This limit

is especially important or change over relays, when the NC and NO

contacts are at dierent voltage levels; i the arc does not extinguish

beore reaching the other contact, the arc will establish a short circuit, a

situation that may lead to the destruction o the relay and equipmentn Load limit curve or arc-ree switching Load voltage/current combina-

tions below this load limit curve in general cause no arc or an arc with

max duration o 1ms

Unless otherwise stated the curves in the graphs refer to a 'load limit curve

II'

I switching currentU switching voltage

load limit curve II

load limit curve I

limit for arc-free switching

0 Imax

Umax

U [V]

I [A]switching currentswitchingvoltage

Decibel, dB

A relative and dimensionless unit calculated as ten times the logarithm to

the base o 10 o a power ratio

Degree o protection (IEC 60529)

Degrees o protection provided by enclosures (IP Code) or electrical equip-

ment

Under certain circumstances this data is relevant or industrial relays and

accessories For relays as components (eg PCB relays) the IP classica-

tion is generally not used, see > Category o protection; there is no direct

correlation between the IP-code and the RT-category

Denition o degree o protection (IP code) IEC 60529 outlines an internatio-

nal classication system or the sealing eectiveness o enclosures o elec-

trical equipment against the intrusion into the equipment o oreign bodies

(ie, tools, dust, ngers) and moisture This classication system utilizes the

letters IP (Ingress Protection) ollowed by two digits


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Electrical endurance

Number o cycles a relay can perorm with electrical contact load dened

under specied conditions according IEC 61810-1 and IEC 61810-2 Unless

otherwise specied the electrical endurance reers to:n NO contactn AC mains, 50 Hz or general purpose relays (schematic or contact

loading A) ; 12 VDC or automotive relaysn duty actor 50%n rated requency o operationn resistive loadn rated voltage (coil)n contact opening and/or closing not synchronized to line requencyn ambient temperature 23Cn no ailsae behaviour (see > 'Failsae')n category o protection RTII - fux proon individual mounting o relays without thermal intererence and connec-

tion wiring according to IEC 61810-1, table 12n relay in upright position (terminals o a print relay pointing downwards)n direct wiring o relays (according IEC 61810-1); or relays mounted on

sockets or when using connectors deratings may applyUnless otherwise stated, the electrical endurance is specied according to

severity level B according IEC 61810-2 For relay ailure modes see also >

Failure criteria Any use beyond the specied electrical endurance is not in

scope o the specied data, the avoidance o such situation requires consi-

deration by the user

Electrical endurance graph

The electrical endurance graph indicates the typical electrical endurance

with resistive load and 250 VAC rated voltage as Mean Cycles to Failure

(MCTF) according Weibull distribution These statistical data do not guaran-

tee a minimum value; this data can be used to estimate the MCTF value

Please note:n the graph or electrical endurance is only valid or the indicated contact

material (in case no contact material is specied, it is valid or the con-

tact materials as listed in the respective datasheet), it is not permissible

to deduce electrical endurance inormation or other contact materialsn it is not permissible to deduce electrical endurance inormation by

extrapolation beyond the range indicated by the curve This applies

especially to the range below 05 A as at this level the contact wear is

small and other ailure modes are dominant

For details please contact our technical support Also see > 'Electrical

endurance'

ELV compliance



Endurance

Electromechanical components as relays, are subject to wear (mechanical

and electrical) For the reliability the typical bath-tub curve applies, hence

singular statistical ailure events below typical reliability values may occur

Environmental data and tests

Relays undergo extensive environmental tests The selection o tests

depends on the product group and the intended application elds; eg or

automotive relays, common environmental tests are:n cold storage test, IEC 600 68-2-1n dry heat, IEC 600 68-2-2n climatic cycling with condensation EN ISO 6988n temperature cycling, IEC 600 68-2-14 Na (shock), IEC 600 68-2-14 Nbn damp heat cycling, IEC 600 68-2-30 Db variant1n operational humidity, IEC600 68-2-38n corrosive gas, IEC 600 68-2-42n fowing mixed gas corrosion, IEC 600 68-2-60 Ke method 54n drop test, ree all, IEC 600 68-2-32

Environmental endurance

Generic term or the relay endurance under dierent climatic conditions

Appropriate test conditions are classied in IEC 60068

Dimensions

Dimensions are indicated in mm and/or inches and are shown or reerence

purposes only

PCB pin dimensions are indicated without solder (pre-tinning)

Dimensions, drawings

Technical drawings or product dimensions are using both ISO projections

(ISO Method E or ISO Method A) according to ISO/R 128 In cases o

ambiguity the projection is dened by the respective international symbol

(see below)

ISO Method E projection - symbol

ISO Method A projection - symbol

DIN-rail

Unless otherwise stated, our products or DIN-rail mounting are designed

and tested or DIN-rails according to TH35-75 / EN60175

Use o other rails (eg according to TH35-15) is neither tested nor appro-

ved

When mounting the sockets on a DIN-rail, assembling the socket acces-

sories and mounting/dismounting relays provide an adequate temperature

(unless otherwise stated -10C to +40C) during the mounting process

Drop test, ree all

Relays are dropped rom a specied height onto a solid ground; this simula-

tes the resistance to bad handling eg all rom a table The test is to veriy

that the component meets its specication However we strongly recom-

mend to scrap dropped relays

Dry switching

Dened as contact category 0 (CC0) according to IEC61810-1: a contact

characterized by a maximum contact voltage o 30mV and a maximum

contact current o 10mA See also chapter 'Testing / diagnostics o relays'

Dust-proo relayRelay with a case to protect against penetration o dust See > 'Category o

environmental protection (IEC 61810)' - RT I

Duty actor, duty cycle

Ratio o the duration o energization to the total period in which intermittant

or temporary operation o the relay place Duty actor is expressed as per-

centage o the total period at a specied requency o operation; eg 30%

duty cycle means that the relay is operated or 30% during a cycle time

U

ton

tcyc

t

df =tontcyc

100 (%)df Duty factor

ton On time

tcyc Cycle time

x

Electrical arc

Is an electric phenomenon caused by plasma current fow between opening

and closing relay contacts An arc is generated by the electric energy o

the load circuit (turn o spark) or the voltage gradient at closing contacts,

ionizing the gas between the contacts and thus establishing an electrical

conductive path The stability o the arc depends on various parameters

such as contact material, air pressure, contact gap, etc

Apart rom positive eect o the electrical arc as limitation o overvoltage

when switching o inductive loads, reduction and dissipation o electrical

load energy and electrical cleaning o contact suraces, the arc locally

produces high temperature and causes contact erosion (also see > 'contact

protection circuits') Special consideration has to be given to DC and high

requency AC-circuits where, depending on the conditions (eg contact

gap) an arc o extended or innite duration could occur; in this case the re-

lay may be destroyed due to the extreme thermal stress Also the switching

o dierent voltages with a generation o an electrical arc and the switchingo reverse polarity on adjacent contact circuits o a multi-pole relay may lead

to non-extinguishing arcs


9/19





9



Form C contact, CO contact, changeover contact

Compound contact consisting o Form A (NO, make) contact and a Form

B (NC, break) contact with a common terminal On changing the switch

position, the contact previously closed opens rst ollowed by the closingo the contact that was previously open For circuit schematic see table in

'Contact arrangement'

Note: in case o a switching arc the NO and NC contact may be temporarily

electrically connected

Form U contact

Two make contact conguration, with two electrically connected movable

contacts which operate simultaneously As special version main contact

with pre-contact See also table 'Contact arrangement'

Form V contact

Two break contact conguration, with two electrically connected movable

contacts which operate simultaneously See also table 'Contact arrange-

ment'

Form X contactTwo make contact conguration with two electrically connected movable

contacts operating simultaneously There is no external connection to the

armature Also called bridge contact

Form Y contact

Two break contact conguration with two electrically connected movable

contacts operating simultaneously There is no external connection to the

armature Also called bridge contact

Form Z contact

A contact conguration withn two make contacts andn two break contacts

with two electrically connected movable contacts each operating simultane-

ously There is no external connection to the armature Also called bridge

contact

Frequency o operation

Number o operation cycles (opening and closing o contacts) per unit o

time The switching rate is usually indicated or switching under rated load;

unless otherwise stated at ambient temperature 23C and without any

circuitry in parallel to the coil (no coil suppression circuit, eg diode) With

contact loads considerably below rated load a higher requency o operation

may be admissible This has to be tested or the specic application For

urther assistance please contact our application support

Full disconnection

Contact separation or the disconnection o conductors so as to provide the

equivalent o basic insulation between those parts intended to be discon-

nected NOTE: there are dielectric strength and dimensional requirements

regarding the relay design but also reerring to the connection, wiring and

design on the outside o the relay

Halogen content



Immersion cleanable/sealed relays

See > 'Category o protection (IEC 61810)' - RT III

Relays which are sealed against the penetration o specied PCB cleaners

or protection lacquers; or more inormation reer to chapter 'Processing

Inormation'

Impedance, Z0

Characteristic property o a transmission line describing the ratio between

electric and magnetic elds

Failure criteria

Set o rules used to decide whether an observed event constitutes a ailure

A contact ailure is the occurence o break and/or make malunctions o a

contact under test, exceeding a specied number

Failure mode

The IEC 61810 denes a relay ailure as occurrence o malunctions, excee-

ding a specied number:n malunction to maken malunction to break (contact bridging on a CO contact as a special

orm o malunction to break), or asn insucient dielectric strength

Such malunctions have to be taken into consideration and must not ge-

nerate risks Depending on the specic load, its characteristics and power

in the contact set, a relay malunction situation may generate various risks

such as malunction o the equipment and its controls, electrical shock,

the risk o excessive heat and re and others It is in the responsibility o

the user to provide or additional precautions against such possible eects

according to the relevant application standards

Standards (eg IEC 695-1-1'Guidance or assessing re hazard o electro-technical products') are based on the principal assumption o heating

eects and risk o re in case electrical currents o certain magnitude being

conducted and switched Our relays are manuactured with sel extingu-

ishing plastics corresponding to the up-to-date technology and standards

requirements Protection against excessive heat and possible spread o re

under all operation conditions even in case o malunction can only be ensu-

red by the design o the equipment as well as by application instructions or

the end user; it is the responsibility o the manuacturer o the equipment to

take the appropriate measures Incorrect connections by the user may lead

to risks, aulty operation and abnormal heating or re It is also the responsi-

bility o the manuacturer o the equipment to take appropriate measures to

avoid potential danger o electrical shock by preventing access to live parts

o the relay including parts as terminals and accessories

NOTE: Relays normally do not have a ailsae behaviour See > 'Failsae'

Failsae

Failing behaviour with denite ailing characteristic, eg component always

ails with contacts do not open Electromechanical relays normally do not

have a ailsae behaviour

Flux proo/suitable or processing on soldering lines

See > 'Category o environmental protection (IEC 61810)' - RT II

Force guided contact

Contact conguration according to EN 50205 with at least one NO contact,

one NC contact and a mechanically linked system, designed that the NO

and NC contacts within the complete contact set are never closed at the

same time, even in case o malunction These relays are implemented in the

control o saety technology or the protection against damage to persons

or objects

See > 'Relays with orce guided contacts'

Form 3 contact, triple make contactThree make contacts conguration with three electrically connected movab-

le contacts operating simultaneously There is no external connection to the

armature See also table 'Contact arrangement'

Form A contact, NO contact, normally open contact

A contact that is open when the relay is in its release condition (unenergized

position or monostable relays) and which is closed when the relay is in its

operate condition For circuit schematic see table 'Contact arrangement'

Form B contact, NC contact, normally closed contact

A contact that is closed when the relay is in its release condition (unener-

gized position or monostable relays) and which is open when the relay is in

its operate condition For circuit schematic see table 'Contact arrangement'


10/19





10



NOTE that this is not necessarily the current that can be switched over the

specied lietime Unless otherwise stated the data or relays is given under

ollowing condition: all contacts equally loaded with the respective current,

input voltage 110% o nominal coil voltage, max ambient temperature, mini-mum allowed mounting distance, test conditions according to the heat test

arrangement IEC EC 61810-1 Annex B In combinations with accessories/

sockets the limiting continuous current is specied by the derating curve

(see > 'Derating curve')

Limiting making current, inrush current

The limiting making current expressed as a current with a power actor o

10 (resistive load) a contact is able to make under specied conditions; or

20 ms data expressed as peak value, or 4 s data expressed as rms value

Unless othwerwise stated the data reers to the Form A contact (NO con-

tact), rated voltage and a current or a duration o max 20 ms or at least

100 cycles or 4 s with duty actor o 10%

Inrush current or some loads can be signicantly higher than its specied

steady state current For these load types the inrush current has to be within

the limits or the limiting making current Typical examples or loads with high

inrush currents are all type o lamps (incandescent, halogen, fuorescent,etc) as well as motors, solenoids, transormers and capacitive loads

Limiting short-time current, Overload current

This test is done to conrm, that our relays withstand normal overload con-

ditions, eg withstand short circuit conditions until a use opens

For automotive applications, current and time are compatible to circuit

protection by a typical automotive use according to ISO 8820-3 (2002) as

shown in the table below Relay will carry the specied currents at 23C

(Irated = rated current as given in contact data section or each relay)

Test current in A Operating time in secondsMinimum Maximum

6.00 * Irated 0.02 s 0.20 s3.50 * Irated 0.08 s 0.50 s2.00 * Irated 0.25 s 5.00 s1.35 * Irated 0.75 s 1800 s

1.10 * Irated 100 h No requirement

For mains uses and uses other than automotive, customers have to reer

to the respective standards (mains condition, prospective short circuit, etc)

to test or their application

Limiting voltage (coil)

The highest permissible input voltage (coil voltage) at the reerence tempe-

rature at which the relay, with continuous energization and, unless otherwise

stated under rated contact load, heats up to its max permissible coil

temperature

Load dump

Short relay use at overvoltage (disconnection o the battery during running

engine)

Load dump testShort relay use under overvoltage conditions (simulated disconnection o

the battery with charging alternator)

Magnetic system

Magnetic systems can be categorized by the switching characteristicn monostable relays return automatically to the rest position (release

state) ater the coil is de-energizedn bistable relays maintain their switching position ater the energization or

input voltage is disconnected See > bistable relays

and the design o the magnetic circuit:n neutral (non-polarized) relays operate independently o the polarity o

the applied voltage (coil voltage)n polarized relays use an additional magnet within the magnetic circuit

and thereore only operate with a specic polarity o energizationn remanent bistable relays adopt a particular switching position ollowing

an energizing direct current in any direction and are then held in thisposition by the remanence in the magnetic circuit

Industrial relays and accessories

Relays and accessories are designed or use in closed and electrically secu-

re switching cabinets In these applications lower standard requirements o

the insulating properties o components could applyCAUTION: These products are to be handled by trained personnel only

Initial contact resistance

Contact resistance measured at the time o production/nal testing Prolon-

ged storage and adverse environmental conditions (eg gases) can lead to

increased resistance values The eect o electrical cleaning due to sucient

load can bring the contact resistance back to lower levels

See > 'Contact resistance'

Initial dielectric strength

Voltage (rms value in AC voltage, 50 Hz 1 min) the insulation can withstand

between relay elements that are insulated rom one another, measured at

the nal production test

Initial insulation resistance

Electrical resistance (initial product condition) measured by applying a DCvoltage o 500 V between two elements o a component that are insulated

rom one another as measured at the nal production test

The requirements according to IEC 61810-1 are:n or unctional insulation > 2 MOhmn or basic insulation > 2 MOhm andn or reinorced insulation > 7 MOhm

Initial pulse withstand voltage, initital surge voltage resistance

Amplitude o a voltage impulse o short duration with a specied impulse

orm (eg 12/50s) and polarity applied to test insulation paths in a relay,

especially where relays are subject to overvoltage situations (eg eects o

lightning)

Insertion cycles

The symbol A indicates that the insertion and extraction must be done

without any load current on the relay/socket contacts

Unless otherwise stated the accessories are designed or max 10 insertion

cycles, insertion and extraction without load; A (10)

Insertion loss

The loss in load power due to the insertion o a component at some point

in a transmission system Generally expressed in decibels as the ratio o

power received at the load beore insertion o the apparatus to the power

received at the load ater insertion

Insulation

Unless otherwise stated, the insulation characteristics are indicated or the

relay component, the design o the application, mounting and wiring also

has to provide or required insulation properties

In general, the relays are designed to be used within enclosures; the relay

suraces are not to be accessible or direct contact by the end user Specic

insulation requirements o the equipment and protection egainst environ-

mental eects need special consideration

Jump start test

Short time relay use at higher system voltages (like car start ater fat vehicle

battery)

Latching relay

See > 'Bistable relay'

Limiting breaking current

The max switching current the contact is intended to break under specied

load conditions The switching current must not exceed the indicated rated

current For DC switching also see > 'DC breaking capacity'

Limiting continuous current

Is the highest steady state load current a relay or an accessory can with-

stand continuously while satisying specied temperature rise requirements;it is identical with the limiting continuous thermal current I th


11/19


12/19





12



Packaging unit

Minimum delivery quantity (eg per carton/plastic bar) and quantity per box

Additionally, minimum quantity requirements apply and these requirements

may dier rom indicated packaging units Please consult with your TE salesorganization or authorized distributor

PCB

Printed circuit board

Peak inrush current

See > 'Limiting making current'

Pre-contact, pre-make contact

Contact with two operating contact points usually o dierent material, with

one contact switching prior to the other one Pre-make contacts are used

mainly or high inrush currents

Product code

The ordering code structure does allow a large number o possible varia-

tions, but not all possible variations are dened as standard types (ordering

codes) and thus not included in the product range

Special versions to customer specications can be supplied Please contact

your local sales organization

Product date code

Printed on the product Indicates the date o production o the product; the

most common ormat is 'year+week', 'yymm' (eg 0412 indicates pro-

duction in 2004 week 12); this code may be ollowed by additional related

inormation

Product marking/specials

For inormation on production date code see > 'Product date code'

Protection classSee > 'Degree o protection (IEC 60529)'

Protection to heat and re

Data o the fammability class according to the UL 94 (Underwriters Labora-

tories, Inc, USA) specication

UL 94 fammability testing, conducted on plastic materials to measure

fammability characteristics, determines the materials tendency either to

extinguish or to spread the fame once the specimen has been ignited

According to IEC61810-1, all plastic materials have to ull the Glow Wire

test requirements with min 650C

PTI

See > 'Tracking index'

Push-to-test button, test tab

For manual operation o the relay The test button is to be used or testpurposes o an equipment or installation The push-to-test button is not de-

Mounting position / Placement

Unless other restrictions are stated the relays can be mounted in any direc-

tion The relay connections have to be ully contacted and with adequate

cross-sections to ensure the current fow and heat dissipationFor the arrangement o the relays the insulation requirements, heat dissipati-

on and the magnetic interrelation have to be taken into consideration

MTBF - Mean time between ailure

Expected value o the distribution o the time between ailure For compo-

nents with limiting ailures due to wear (eg contact wear), see > 'MCTF-

Mean cycles to ailure'

Nominal power (coil)

See > 'Rated coil power'

Nominal voltage (coil)

See > 'Rated coil voltage'

Normally closed contact, NC contact

See > 'Form B contact, NC contact, normally closed contact'

Normally open contact, NO contact

See > 'Form A contact, NO contact, normally open contact'

Open contact circuit data

Insulation parameters o the contact circuit

Operate

Process in which a relay shits rom the release/rest condition to the operate

condition

Operate state, operate condition

For a monostable relay, specied condition o the relay when it is energized

by the specied energizing quantity and has responded to that energization

For a bistable relay, it reers to the condition other than the release/reset

condition as declared by the manuacturer

Operate time (DC coils)

The time interval that elapses rom energizing a monostable relay in the rest

state with the rated voltage (pulse or square signal) at an ambient tempera-

ture o 23C to the moment when the last output circuit is closed or opened

(bounce time not included) The operate time varies with the applied coil

voltage and the ambient/coil temperature

This denition reers to DC-coils only, due to the dependency o the phase

angle considerably longer operate times may occur with AC magnetic

systems

Operate voltage

Value o coil voltage at which a monostable relay operates For bistable

relays see > 'Set voltage'

Operate voltage U1

Value o the coil voltage at which a relay operates, having previouslybeen energized at the same voltage and with rated contact load (ther-

mal equilibrium has to be achieved)

Operate voltage without preenergizing U0Minimum permissible input voltage at which the relay operates, or a coil

temperature equal to the reerence temperature (23C coil temperature

without preenergizing)

Operation

One switching cycle including energizing and de-energizing o the relay coil

Operative range

According to IEC 61810-1

Class 1: 80%110% o the rated coil voltage (or range)

Class 2: 85%110% o the rated coil voltage (or range)

For diagram specication see > 'Coil operative range'


13/19





13



unction diagram below shows the dierent cycles or the most important

relay congurations o undelayed power relays Unless otherwise stated the

indicated times are maximum values, the cycles specied apply to DC-coils

energized with rated voltage (without any components in series or parallel tothe coil) and at the reerence temperature

Seen 'Operate time'n 'Release time', 'Reset time'n 'Bounce time'n 'Minimum energization duration'

Relay with orce guided contacts

The compliance with regulations or the saety o persons and material isimperative in our technical world National and international regulations take

various risks into account These saety standards also make demands on

components which share with their unction the saety level o a plant, ma-

chine or the equipment For relays being used or sae contact monitoring

purposes the contacts have to be linked mechanically in a way, that NO and

NC contacts must not be closed at the same time It has to be ensured,

that over the entire lie and even in case o malunction (eg contact wel-

ding) the open contact gap will be at least 05 mm Relays with orce guided

contacts comply with the requirements o EN 50205

Release

Process in which a monostable relay shits rom the operate state back to

the rest state

Release state (normal position)

Switch position o a non-energized monostable relay

Release time

The time interval that elapses rom the point o time at which a monostable

relay in the operating state has the rated voltage disconnected to the point

o time at which the last output circuit has closed or opened (not including

the bounce time) Unless otherwise stated the indicated times are maximum

values and are valid or energization with rated voltage, without any compo-

nents in series or parallel to the coil, and at reerence temperature

Release voltage

The input voltage at or below which a monostable relay releases to the rest

state at the reerence temperature

Reliabilty

Electromechanical components as relays, are subject to wear (mechanical

and electrical) For the reliability the typical bath-tub curve applies, hencesingular statistical ailure events below typical reliability values may occur

signed or standard ON/OFF operations, or continuous electrical operation

in the manually set ON state, and is not to be used as a switch

Beore operating the test tab, the operator has to make sure that the load

and any other connected item will operate saelyAs saety unctions o the equipment might be bypassed and reduced

insulation requirements apply, the test button is to be operated by trained

personnel only

Quick connect terminals (spade terminals)

The connectors indicated in the datasheet may be used or the connection

to the relay When using this connector type the given plug cycles and the

maximum permissible current have to be taken into consideration The

connector and wire cross section have to be selected so that under the

current load the increase o the temperature at the connector point must

not exceed 45 K For high contact currents it is recommended to solder the

connection

Furthermore the correct insulation o the connectors/plugs have to be

respected

Rated coil powerProduct o coil current and voltage at rated coil voltage (in mW or W or DC-

coils and in VA or AC-coils)

Rated coil voltage, Nominal voltage (coil)

Rated voltage at which the relay displays the operating characteristics, given

or a constant DC supply or sinusoidal AC supply Other operating condi-

tions (eg pulse control, ramp voltage, hal wave rectiying, etc) may lead to

characteristics other than specied

Rated current

Current a relay can switch on and o and a relay or accessory can carry un-

der specied conditions Unless otherwise dened the rated current covers:n contact current, switching currentn limiting continuous current: For a relay the specied conditions are

dened under contact ratings; see > contact ratings For accessories

the rated current is specied or a duty actor o 50% at rated requency

o operation and at ambient temperature 23C; the respective derating

curves should be ollowed

Rated values

Standard values the relay is designed or Values are used to classiy relays

Rated voltage (contacts)

Voltage between the switching contacts beore closing or ater opening o

the contact

REACH SvHC compliance



Reerence temperature

Unless otherwise indicated the reerence temperature reers to an ambient

temperature o 23C ('room temperature' ) Also see > 'Coil data'

Reerence values

Reerence values or all tests according to IEC 61810-1

Refection loss, Return loss

The part o a signal which is lost due to the refection o power at a line o

discontinuity

Reinorced insulation

A single insulation system applied to live parts which provides a degree

o protection against electric shock, comparable to a system comprising

basic insulation and supplementary insulation (reer to IEC 61810-1, Type o

insulation)

Relay cycles

Due to the sel induction o the coil and the inertia o the parts to be mo-ved, on activating a relay the operations do not take place suddenly The


14/19





14



Shock resistance (destruction)

This test is used to evaluate the resistance o the relay to heavy mechanical

shocks leading to a permanent damage to the relay This test is perormed

according to the IEC 60068-2-27, Ea test

Shock resistance (unction)

This test is used to evaluate the resistance o the relay to mechanical

shocks such as those that could occur in transport or during operation (no

opening o closed relay contacts with a duration >10 s) This test is peror-

med according to the IEC 60068-2-27, Ea test

Data valid or all relay axes unless otherwise stated Nevertheless it is

recommended to avoid shock especially in armature and contact movement

direction

Single contact

Contact system with one contact point per contact member (contact blade)

Single/double throw contact

A single throw contact connects one common line (movable contact) to one

load line (stationary contact) See > 'Form A contact' and 'Form B contact'A double throw contact switches one common line between two stationary

contacts, or example between a NO contact and a NC contact See >

'Form C contact, CO contact, changeover contact'

Single/double/multi pole

A single pole relay connects one common line (movable contact) to one

load line (stationary contact)

A double pole relay switches two, electrically disconnected common lines

with two electrically independent load lines (like two separate make relays);

the same stands or multi-pole relays, the number o poles indicate the

number o independently switches load lines

Switching o dierent potentials on adjacent contact circuits o a multi-pole

relay is permitted as long as the sum o applied voltages does not exceed

the rated insulation voltage

The switching o dierent voltages with the generation o an electrical arc

and the switching o reverse polarity on adjacent contact circuits o a multi-

pole relay without contact separated chambers however is not permitted

The contact load has to be connected to the same contact side

Sockets and accessories

All listed sockets and accessories have been tested and approved only with

the indicated relays rom the TE product range

For combinations o sockets with other relays with similar design and pin-

ning TE cannot take responsibility or any malunction

Also see > 'Combination o relay and socket'

Soldering temperature/time, IEC 60068-2-20

See > 'Resistance to soldering heat'

Solid insulation

Solid insulating material between two conductive parts

Steady state current limit

See > 'Limiting continuous current'

Stripline

A type o transmission line conguration which consists o a single narrow

conductor parallel and equidistant to two parallel ground planes

Switching capacity

See > 'Switching power'

Switching current

See >n 'Rated current'n 'Limiting making current'n 'Limiting breaking current'

Reset

Process in which a bistable relay returns rom the operate state back to the

rest state

Reset state

Switch position o a bistable relay as specied by the manuacturer Unless

otherwise stated the reset state is the contact position where the normally

open contacts (orm A, NO contact) are open and the normally closed con-

tacts (orm B, NC contact) are closed Please note that the contact position

or bistable relays is not dened at delivery

Reset time

The time interval that elapses rom the point o time at which a bistable relay

in the operating state has the rated voltage (applied in the opposite direction

or 1-coil systems and to the reset coil or 2-coil systems) to the point o

time at which the last output circuit has closed or opened (not including the

bounce time)

Reset voltage

The input voltage to a bistable coil or reset to the rest state at the reerencetemperature Please note the wiring diagram and the polarity (see > 'Bista-

ble relay')n Reset voltage max

The input voltage that must not be exceeded to a bistable coil or reset to

the rest state at the reerence temperaturen Reset voltage min

The input voltage that has to be applied to a bistable coil or reset to the

rest state at the reerence temperature

Resistance to soldering heat

According to IEC 60068-2-20, method 1A

Rest state

Switch position o a monostable relay in the unenergized state

For bistable relays see> 'Reset state'

RoHS - Directive 2002/95/EC, EU RoHS compliance

Directive on the Restriction o Hazardous Substances (Directive 2002/95/

EU, RoHS directive) restricting the use o certain materials as Lead (Pb),

Cadmium (Cd), Mercury (Hg), hexavalent Chromium (Cr6), polybrominated

Biphenyls (PBB) and polybrominated Diphenylethers (PBDE)

'Compliant'

indicates that the entire product group is compliant with the RoHS

directive and none o the above materials is intentionally added and/or

below the limits set orth in the directive

'Compliant versions'

indicates that certain products within the respective product group are

compliant with the RoHS directive The RoHS compliant selection is

indicated together with the inormation on the RoHS compliance Some

products o that product group however do contain materials (eg Cd)

listed above and thus are not compliant with the RoHS directive

Saety relaySee > 'Relay with orce guided contacts'

Sealed relay

See > 'Category o protection (IEC 61810)' - RT IV and RT V

Set time

The time interval that elapses rom operating a bistable relay with the rated

voltage (pulse or square signal) at an ambient temperature o 23C to the

moment when the last output circuit is closed or opened (bounce time not

included) The operate time varies with the applied coil voltage and the

ambient/coil temperature

Set voltage

Value o coil voltage at which a bistable relay operates For monostable

relays see > 'Operate voltage'


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Through-hole technology (THT)

An assembly process or mounting components where terminals are passed

through supported (plated through) or unsupported (bare) holes in an inter-

connection substrate Normally, traditional wave soldering is used with THTcomponents

Tracking

Progressive degradation o a solid insulating material by local discharges to

orm conducting or partially conducting paths

Tracking indexn PTI - Proo tracking index - numerical value o the proo voltage ex-

pressed in volts which a material in test can withstand without tracking

under specied conditions (according IEV 212-01-45)n CTI - Comparative tracking index - numerical value o the maximum vol-

tage expressed in volts which a material in test can withstand without

tracking under specied conditions (according IEV 212-01-45)

Transit time

The movement time o the armature ater opening o one contact set (egNC) beore closing o the other (eg NO) o a changeover relay See >

'Relay cycles'

Twin contact, biurcated contact

Contact with two simultaneously operating contact points Twin contacts

increase the contact reliability considerably, especially when switching low

currents and voltages (dry circuits) and/or are used or reduction o contact

resistance Biurcated contacts are twin contacts with the two contact

points on one contact member (contact blade)

UrtdSee > 'Rated voltage'

Vibration resistance (destructive)

This test is used to evaluate the resistance o the relay to heavy mechanical

vibration leading to a permanent damage to the relay This test is perormed

according to the IEC 60068-2-27, Ea test

Vibration resistance (unctional)

This test is used to evaluate the resistance o the relay to harmonic me-

chanical oscillations such as those that could occur in transport or during

operation No opening o closed relay contacts or closing o open relay

contacts with a duration >10 s is allowed to occur during the test This

test is perormed according to the IEC 60068-2-6, Fc test Unless otherwise

stated the values reer to a requency range 30150 Hz

Voltage drop

Eect o contact resistance, measured as voltage drop across closed con-

tacts See > 'Contact resistance'

VSWR

Abbreviation or 'Voltage Standing Wave Ratio' The ratio o the maximum tothe minimum voltage set up along a transmission by refections

Wash tight/immersion cleanable

See 'Category o protection (IEC 61810)' - RT III

Relays that can be cleaned together with the printed circuit board ater

soldering The washing requires a suitable solvent The term immersion

cleanable/wash tight is not identical with hermetically sealed!

Unless otherwise stated the relays are wash tight according to Qc2 IEC

60068-2-17, tested with a water immersion test at max ambient tempera-

ture or 1 minute

Contact our technical support or suitable solvents and washing parame-

ters The user needs to veriy the compatability o lacquer, solvants and

drying process

Switching power

Product o the switching current and switching voltage (in W or direct cur-

rent, in VA or alternating current)

Switching rate

See > 'Frequency o operation'

Switching voltage

See > 'Rated voltage (contacts)'

Switching voltage max.

See > 'Max switching voltage'

Terminal assignment

For historical reasons and due to typical application nomenclature (eg relays

in automotive applications) dierent terminal assignment schemes are used:

Terminal assignment to IEC 67

The terminals are identied by consecutive numbers Please note that

two digit identiers exist in both the IEC 67 and the EN 50005 identi-

cation systems and may have dierent meaning

Terminal assignment to EN 50005: the terminals are dened by a two digit

code:

or the coil terminals 'A1', 'A2' are used

or contacts the rst number indicates the pole, the second number

indicates the unction

1 or the movable orm C, CO contact,

2 or the orm B, NC contact,

4 or the orm A, NO contact

eg a terminal '24' indicates the orm A, NO contact o the second pole

o a relay

Automotive relays

Quick connect style coil and load terminals ISO relays may be numbe-

red according to two dierent standards, the terminals have the same

location and unction The respective numbers are:

1 or 86 or the rst coil pin;

2 or 85 or the second coil pin;

3 or 30 or the common load pin;

4 or 87a or the orm B, NC load pin;

5 or 87 or the orm A, NO load pin

NOTE that the terminal assignment graphs are indicated either 'bottom

view' (as seen rom the solder wave side o pcb's, pin side o the relays) or

'top view' (as seen rom the component side o single sided pcb's or the

cover side o a relay)

Terminal torque, screw type terminals

For screw type terminals the maximum indicated screw torque must not be

exceededNo torque must be applied to any other terminal types of relays or accessories

Test voltage/dielectric test voltage/dielectric strength

Voltage applied during dielectric (high voltage) tests between intentionally

not electrically connected parts o the relay

Thermal resistance

Relay parameter measured in Kelvin per Watt, which relates the consumed

power with the respective temperature increase in the state o thermal equi-

librium measured without load and without components in parallel or in line

to the coil Multiplied with its power consumption (at the actual coil tempera-

ture) it indicates the temperature rise o the coil above ambient temperature

Thermoelectric potential

Voltage at the relay terminals o a closed contact resulting rom a tempera-

ture dierence o the dierent metal junctions (terminal, spring, contacts,)

inside the relay

Through-hole refow (THR)

An assembly process, where THT components are soldered in a refow pro-

cess instead o traditional wave soldering (also reerred to as pin-in-paste)For details see chapter Processing Inormation


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Handling, Processing, Testing and Use

Processing

Testing

For electrical incoming inspection tests reer to sections > 'Contact resis-

tance', 'Diagnostics o relays' and 'Storage'

During incoming inspection and respective ha

Documents

ENG SS Definitions Relays 0712