Durostone®

PCB Solder Pallet MaterialsHigh performance composite materials specifically designed for the PCB assembly process

w Electronics

CHP760 CAS761 CAG762

Durostone® materials have been developed for all procedures within the PCB assembly process. There are three main grades which are suitable for use in the SMT reflow and wave soldering processes, Durostone® CHP760, CAS761 and CAG762. These materials offer the following features:

• Excellentmechanicalpropertiesatelevated temperatures including the lead-free process.

• Lowthermalconductivity.

• Excellentmachiningpropertiesenablingthemanufactureofcomplexdesign solder pallets.

• Goodresistancetochemicalsusedinmodernfluxes.

PCB Solder Pallet Materials

WGR781Harsh environmentsDurostone® WGR781 is a woven glass laminate which has been specially formulatedtowithstandextremetemperaturesandaggressivefluxes.

Fluxescontaininghalidesorhalogenactivators can reduce a material ´s lifespan, but Durostone®WGR781canrunmanythousands of cycles without any adverse effect. The woven glass reinforcement ensuresthatthefluxdoesnotpenetratethesolderpalletsurfaceandexposefibres.

The resin used to produce Durostone®WGR781 can operate at a continous temperature of 280°Cwithoutdegradation.Thematerialalsodisplaysexcellentmechanicallyproperties and provides the necessary dimensional stability at elevated temperatures in the wave soldering process.

Durostone®WGR781hasexcellentmachining properties, with walls of just 0.50mmthickpossible.

Durostone®

Material Selector

Is the flux corrosive?

Does it contain?

• halides(JSTD-004 types ORH1, ORM1)

• succinicoradipicacid(seeMSDS,CASn°:110-15-6and124-04-9)

Does the solder bathexceed 265 °C?

Does the bottom sidePCB pre-heat temperature exceed 140 °C?

Are anti-static properties required?

Does the material have to be optically refl ective for infra-red sensors?

No

No

No No

No

Yes

Yes

Yes

Yes

Yes

Durostone® CAG762

Durostone®

CAS761Durostone®

CHP760

Material SelectorThe following flow chart enables the correct choice of material grade depending on the process parameters.

Durostone®

WGR781

Technical DataCHP760 CAS761 CAG762 WGR781

Grade Standard Anti-StaticAnti-Static

OpticalFluxResistant

Colour Blue Black Grey Black

Density(g/cm³) 1.85 1.85 1.85 1.85

FlexuralStrength3pointsupport(MPa)

@23°C 360 360 360 400

@150°C 180 180 180 300

@185°C – – – –

ModulusofElasticity(MPa)

@23°C 18,000 18,000 18,000 26,000

@150°C 9,000 9,000 9,000 24,000

@185°C – – – –

WaterAbsorption(%) < 0.20 < 0.20 < 0.20 < 0.10

CoefficientofLinearExpansion(10–⁶/K)between30°Cand200°C

13 11 11 13

ThermalConductivity(W/m°K) 0.25 0.25 0.25 0.30

MaximumOperating Temperature(°C)10-20seconds

300 300 300 320

StandardOperating Temperature(°C)

260 260 260 280

SurfaceResistivity(ohms) – 10⁵-10⁹ 10⁵-10⁹ 10⁵-10⁹

Chemical Resistance Good Good Good Excellent

SheetSize(mm) 2440x1220 2440x1220 2440x1220 1500x1220

Thickness’available(mm)3,4,5,6,

8, 10, 123,4,5,6,

8, 10, 123,4,5,6,

8, 10, 125,6,8,10

ThicknessTolerance 3 mm -0/+0.10 -0/+0.10 -0/+0.10 –

4-12mm -0/+0.20 -0/+0.20 -0/+0.20 -0/+0.20

FlatnessTolerance (forapanelsizeof300x300mm)

0.20 0.20 0.20 0.20

Parallelism(mm) 0.10 0.10 0.10 0.10

• Allthevaluesareaveragevalues.

• Materialisconsideredasnotelectrostaticdissipative(ESD)ifmorethan5measurements/m²areinsulative(10¹²Ω).AccordingtoJEDECstandardJESD625B,astaticdissipativematerialis amaterialhavingasurfaceresistancebetween10⁴and10¹¹Ω.

• Cosmeticdefectsarenotconsideredasnon-conformities.Duetothenatureofglassfiber composite,thecolourrepartitionisnotguaranteed.

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EuRoPEGERMANY Röchling Lützen SE & Co. KG Planckstr. 3 06686Lützen T+4934444308-200 F+4934444308-100 kontakt@roechling-luetzen.de www.roechling-industrial.com/luetzen

FRANCE Röchling Permali Composites S.A.S. 8,RueAndréFruchard B.P.12,Maxéville 54527LAXOUCedex T+33383342424 F+33383322318 info@roechling-permali.fr www.roechling-industrial.com/fr

GREAT BRITAIN Röchling Engineering Plastics (uK) Ltd. WaterwellsDrive|Quedgeley GloucesterGL22AA T+44145272-7900 F+44145272-8056 sales@roechling-plastics.co.uk www.roechling-industrial.com/uk/gloucester

ITALY Röchling Machined Plastics Italia s.r.l ViaMorena66|28024Gozzano T+39032295421 F+3903993335 compositi@roechling.it www.roechling-industrial.com/it

SPAIN Röchling Plásticos Técnicos S.A.u. Ctra.Villena,s/n.-Apartado34 46880Bocairent T+34962350165 F+34962351025 comercial@roechling-plastics.es www.roechling-industrial.com/es

NoRTH AMERICAuSA Röchling Machined Plastics 161WestecDrive 15666MountPleasantPA T+1724696-5200 F+1724696-5300 rmp@roechling.biz www.roechling-industrial.com/us

ASIACHINA Roechling International (Shanghai) Co., Ltd. No.448ChangYangStreet SuzhouIndustrialPark 215024Suzhou|P.R.China T+8651262652899 F+8651262652699 ris@roechling-plastics.com.cn www.roechling-industrial.com/cn

INDIA Roechling Engineering Plastics (India) Pvt. Ltd. 701,AWing,LeoBuilding 24thRoad,KharWest|400052Mumbai T+91224217-8787 F+91224217-8700 durostone@roechling-india.com www.roechling-industrial.com/india

SINGAPoRE Roechling Engineering Plastics Pte. Ltd. No.14TuasAvenue8 Singapore639229 T+6568631877 F+6568631766 rep@roechling.com.sg www.roechling-industrial.com/sg/ singapore