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SunlordEXPERT IN PASSIVE PARTS
OverOver--voltage & Overvoltage & Over--current current Protection SolutionProtection Solution
2013.03
SunlordEXPERT IN PASSIVE PARTS
1.1. OverOver--voltage & Overvoltage & Over--current Treatcurrent Treat
2.2. Protection Solution on Power LinesProtection Solution on Power Lines
-- LED/TV/STB/LED/TV/STB/Energy MeterEnergy Meter//Security/Communication/ Security/Communication/ Industrial EquipmentIndustrial Equipment
3.3. Performance Comparison of overPerformance Comparison of over--voltage Protection voltage Protection ComponentsComponents
ContentContentContent
SunlordEXPERT IN PASSIVE PARTS
Over-voltage and Over-current Treat
OverOver--voltage and Overvoltage and Over--current current TreatTreat
Many equipments exhibitexcessive inrush currents when they are turned on which will cause system damage or fuse tripping.
Due to operation (such as switch on or off), fault or other reasons, the system may be changed from one state to another state and over-voltage may be produced by electromagnetic oscillation during this process.
The space around lightning has a strong alternating electromagnetic waves spreading outward divergently. In this case transient voltage will occur in cables or circuit.
Source
ConductionCurrent wave
( 2mS or 10/1000μS)
μS - mSSwitching
Over-voltage
ConductionCurrent wave SOver-
current
μS
DurationType Pulse wave Propagation mode
Lightning Induced
Over-voltage
Current wave(8/20μS) or
Voltage wave(1.2/50μS)
Electromagnetic induction,
Conduction
Over-voltage Carrier: Circuit, Network interface, Signal line interface.Over-current Carrier: Circuit.
SunlordEXPERT IN PASSIVE PARTS
Power NTC
Varistor
Varistor
Protection Components
SPNL (Leaded)
SDVL3216~5650(Chip)
VPR(Leaded)、VPL(Low profile leaded)、SDVL8063~10080(Chip)
Sunlord Part Number
Switching Over-voltage
Over-current
Type
Lightning Induced Over-
voltage
ProtectionProtection ComponentsComponents
SunlordEXPERT IN PASSIVE PARTSContentContentContent
1.1. OverOver--voltage & Overvoltage & Over--current Treatcurrent Treat
2.2. Protection Solution on Power LinesProtection Solution on Power Lines
-- LED/TV/STB/LED/TV/STB/Energy MeterEnergy Meter//Security/Communication/ Security/Communication/ Industrial EquipmentIndustrial Equipment
3.3. Performance Comparison of overPerformance Comparison of over--voltage Protection voltage Protection ComponentsComponents
SunlordEXPERT IN PASSIVE PARTS
1.2/50us Voltage Wave(without varistor)
Varistor
Signal/Power
GND
Varistor
V
t
Clamping Voltage
V
t
Withstand Voltage
With varistor
System rated voltage
Vdc
Circuit
/ Device
Principle of OverPrinciple of Over--voltage Protectionvoltage Protection
SunlordEXPERT IN PASSIVE PARTS
Power(AC/DC)
GND
Power NTC
CtCircuit
/ Device
Principle of OverPrinciple of Over--current Protectioncurrent Protection
SPNL13D Series
0.1
1
10
100
1000
-40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150Temperature()
Res
ista
nce(Ω
)
SPNL13D150
SPNL13D080
SPNL13D1R5
SunlordEXPERT IN PASSIVE PARTS
R25, Permissible Max. Steady Current, Permissible Max. Capacitor
Max. Working Voltage,Clamping Voltage,Peak Current
Main Parameter
suppressing induced over-voltage cased by power and lightning;absorbing surge energy
VPR Series/ VPL Series / SDVL Series
Varistor
Suppressing surge current amplitude and no consumption of powerSPNL SeriesPower
NTC
Sunlord P/NType Effect
Application:Household appliances, LED Lighting, TV/STB, Switching Power Supply, Power adapter , Energy Meter and Industrial instrument.
Power(AC/DC)
GND
Power NTC
CtVaristorCircuit
/ Device
Protection PrincipleProtection Principle
SunlordEXPERT IN PASSIVE PARTS
400~1200A150~385Vac8063~10080Voltage Surge Suppression on AC
2500~4500A130~680Vac2004/3007/4505
Voltage Surge Suppression on ACVPL
100~6500A11~680Vacφ5~φ20Voltage Surge Suppression on ACVPR
Picture
150~1200A5.5~100Vdc3216~5650Voltage Surge Suppression on DC
SDVL
ApplicationSeries Size Working Voltage
Peak Current(8/20us)
Electrical Performance ShowElectrical Performance Show
SunlordEXPERT IN PASSIVE PARTS
Picture
150~200 50μF~810μF0.5A~12ASPNL
PermissibleMax. Steady CurrentSeries
PermissibleMax. Capacitor
Max. Steady Temperature
Picture
0.7Ω~30ΩΦ5~Φ20Current Surge
Suppression on AC/DC
SPNL
ApplicationSeries Size R25
Electrical Performance ShowElectrical Performance Show
SunlordEXPERT IN PASSIVE PARTS
Outdoor LED
Locaton
R25=20Ω, Imax=2A, Ct=150μFSPNL09D200M
Vdc=24V, Ip=400~800A, Et=1.7~3.7JSDVL4532SD300PT2
No. Sunlord P/N Main Parameter
1
SDVL10080KA301PT/VPR07KD300/ VPL1004KD300
Uac=220V, Vc=775V, Ip=1200A, Et=32.2J
SPNL09D200M R25=20Ω, Imax=2A, Ct=150μF
3 SDVL4532SD300PT Vdc=24V, Ip=400~800A, Et=1.7~3.7J
4 SDV1608H300C100NPT Vdc=24V, Cp=10~360pF
Application ExampleApplication Example--LED lightingLED lighting(Internal Power Module)(Internal Power Module)
Note: According to electromagnetic pulse source and energy pulse, SDVL may be omitted on ;According to design. SPNL may be omitted on or .2
21
AC-DC DC-DC IC Driver LEDTube
1 2 3 4L
N
RT RT
SunlordEXPERT IN PASSIVE PARTS
Outdoor LED
Locaton
R25=20, Imax=2A, Ct=150μFSPNL09D200M
Vdc=24V, Ip=400~800A, Et=1.7~3.7JSDVL4532SD300PT2
No. Sunlord P/N Main Parameter
3 SDVL4532SD300PT Vdc=24V, Ip=400~800A, Et=1.7~3.7J
4 SDV1608H300C100NPT Vdc=24V, Cp=10~360pF
Note: Power adapter provides DC power supply.
Application ExampleApplication Example--LED lightingLED lighting(External Power Module)(External Power Module)
DC-DC IC Driver LEDTube
2 3 4+
-
RT
SunlordEXPERT IN PASSIVE PARTS
Application ExampleApplication Example--TV/STBTV/STB
R25=10Ω, Imax=3A, Ct=150μFSPNL09D100M
Vdc=24V, Ip=400~800A, Et=1.7~3.7JSDVL4532SD300PT2
No. Sunlord P/N Main Parameter
1
VPR14KD300BS or VPL3007KD300BS
Uac=220V, Vc=775V, Ip=4500A, Et=125J
SPNL09D100M R25=10Ω, Imax=3A, Ct=150μF
3 SDVL4532SD300PT Vdc=24V, Ip=400~800A, Et=1.7~3.7J
Note: According to electromagnetic pulse source and energy pulse, SDVL may be omitted on ;According to design. SPNL may be omitted on or .2
21
AC-DC DC-DCIC
Driver
1 2 3L
N
RT RT
SunlordEXPERT IN PASSIVE PARTS
Application ExampleApplication Example--Energy MeterEnergy Meter
2
3Varistor
Antenna
Collector
Concentrator
Digital display
instrument
Low voltage supply
SunlordEXPERT IN PASSIVE PARTS
ESD protection for SIM and USB2.0SDV1005H260C030YP
Uac=220V, Vc=1120V, Ip=4500A, Et=130JVPR14KD420BS
2/3
ESD protection for SIM and USB2.0SDV1005H260C030YP
ESD protection for RS485SDV1005E5R5C101NP
Vdc=24V, Ip=400~800A, Et=1.7~3.7J(SMAJ/SMBJ/SMCJ on several power lines of collector and concentrator)
SDVL4532SD300PT
R25=10Ω, Imax=3A, Ct=150μFSPNL09D100M
No. Sunlord P/N Main Parameter
1
VPR14KD420BS Uac=220V,Vc=1120V, Ip=4500A, Et=130J
SPNL09D100M R25=10Ω, Imax=3A, Ct=150μF
SDV1005E5R5C101NP ESD protection for RS485
Application ExampleApplication Example--Energy MeterEnergy Meter
SunlordEXPERT IN PASSIVE PARTS
Vdc=24V, Ip=400~800A, Et=1.7~3.7JSDVL4532SD300PT3
Vsig≤3.6V, Ip=800~1000A, Et=1.9~4.0J, Cp<1pf
For signal line: For signal line: SDMA SDMA (S(Schedulechedule))
4
R25=10Ω, Imax=3A, Ct=150μFSPNL09D100M
Vdc=24V, Ip=400~800A, Et=1.7~3.7JSDVL4532SD300PT2
No. Sunlord P/N Main Parameter
1
VPR14KD300BS or VPL3007KD300BS
Uac=220V,Vc=775V, Ip=4500A, Et=125J
SPNL09D100M R25=10Ω, Imax=3A, Ct=150μF
POEPOE Supply: Supply: SDVL4532SD650PTSDVL4532SD650PT Udc=65V, Vc=140V, Ip=600A, Et=4.0J
Application ExampleApplication Example--Security/CommunicationSecurity/Communication
Note: According to electromagnetic pulse source and energy pulse, SDVL may be omitted on ;According to design. SPNL may be omitted on or .2
21
AC-DC DC-DCIC
Driver
1 2 3L
NPort
Signal I/O4RTRT
SunlordEXPERT IN PASSIVE PARTS
RJ45 PortRJ45 Port
POE Supply
Application ExampleApplication Example--Security/CommunicationSecurity/Communication
SunlordEXPERT IN PASSIVE PARTS
Application ExampleApplication Example--Industrial EquipmentIndustrial Equipment
Vdc=24V, Ip=400~800A, Et=1.7~3.7JSDVL4532SD300PT3
R25=10Ω, Imax=3A, Ct=150μFSPNL09D100M
Vdc=24V, Ip=800~1200A, Et=7.6~9.6JSDVL5650SD300PT2
No. Sunlord P/N Main Parameter
1VPR20KD300BS Uac=220V,Vc=775V, Ip=6500A, Et=220J
SPNL15D2R5M R25=2.5Ω, Imax=8A, Ct=330μF
Note: According to electromagnetic pulse source and energy pulse, SDVL may be omitted on ;According to design. SPNL may be omitted on or .2
21
AC-DC DC-DCIC
Driver
1 2 3L
N
RTRT
SunlordEXPERT IN PASSIVE PARTSContentContentContent
1.1. OverOver--voltage and Overvoltage and Over--current Treatcurrent Treat
2.2. Protection Solution on Power LinesProtection Solution on Power Lines
-- LED/TV/STB/LED/TV/STB/Energy MeterEnergy Meter//Security/Communication/ Security/Communication/ Industrial EquipmentIndustrial Equipment
3.3. Performance Comparison of OverPerformance Comparison of Over--voltage Protection voltage Protection ComponentsComponents
SunlordEXPERT IN PASSIVE PARTS
Varistor TVS
P/N Size(mm)Rated Power
P (W)Ip (A)8/20μS P/N Size
(mm)Rated Power
P (W)Ip (A)8/20μS
SDVL3216 3.2*1.6*1.05 500~780 250~300 SMAJ 5.0*2.5*1.9 400 3.0~195
SDVL3225 3.2*2.5*1.7 600~1600 300~400 SMBJ 5.4*3.6*2.3 600 4.5~293
SDVL4532 4.5*3.2*2.5 700~3000 600~800 SMCJ 8.0*6.0*2.3 1500 24.7~733
SDVL5650 5.7*5.0*2.5 1600~8500 900~1200 SMDJ 8.0*6.0*2.3 3000 92~1250
For the same performance, Chip Varistor’s size is very smaller than TVS’s size;Varistor has better performance on EMC effect, flame retardancy and temperature
characteristic than other over-voltage protection components.
VaristorVaristor vs. TVSvs. TVS
SunlordEXPERT IN PASSIVE PARTS
With the working voltage increasing, the pulse current through TVS drops dramatically; however, the pulse current through SDVL almost unchanged. So the varistor is more available to be used in lines with high voltage and high amplitude pulse current for suppressing over-voltage and absorbing surge energy.
Pulse Current vs. Working Voltage
0
50
100
150
200
250
300
350
5.5 9 14 26 38 48 56 65 85 100
Working Voltage Vdc(V)
Ip(
8/20μ
S)
(A)
SMAJ SDVL
Pulse Power vs. Working Voltage
200
300
400
500
600
700
800
900
5.5 9 14 26 38 48 56 65 85 100
Working Voltage Vdc(V)
P(
10/1000μ
S)
(W)
SMAJ SDVL
VaristorVaristor vs. TVSvs. TVS
SunlordEXPERT IN PASSIVE PARTS
Varistor has transient resistance and can absorb part of energy, therefore it is good for EMC capability of device.
Varistor
Varistor
TVS / GDT / PESD
Signal/Power
Circuit
/ DeviceTVS/GDT/PESD
EMC Effect
Circuit
/ Device
Signal/Power
TVS, GDT and PESD have no capability of absorbing ESD energy which may occur in the circuit and cause EMI.
VaristorVaristor vs. TVS/GDT/PESDvs. TVS/GDT/PESD
SunlordEXPERT IN PASSIVE PARTS
Pulse Current vs. Temperature
Chip varistor is a good hot conductor, has excellent heat dissipation capacity, and can keep stable temperature characteristics at 85.
Because of material performance, the temperature characteristics of TVS deratedfrom 25.
Temperature Characteristic
VaristorVaristor vs. TVSvs. TVS