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Time of issue:2020-03-17 00:00:00

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Tungsten copper heat spreader

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Tungsten copper heat spreader

  • Categories:News
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  • Time of issue:2020-05-19 10:00
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(Summary description)

Tungsten copper heat spreader

(Summary description)

  • Categories:News
  • Author:
  • Origin:
  • Time of issue:2020-05-19 10:00
  • Views:
Information

WCu heat spreader material is a composite of tungsten and copper, with both tungsten low expansion characteristics, but also has copper of high thermal conductivity properties, and the tungsten and copper in the thermal expansion coefficient and thermal conductivity can be adjusted with the WCu composition, also the composite can be machined to various shape, these features make the application of this composite with great convenience. The thermal expansion can be adjusted to match with the following material:

(1) Ceramic materials: Al2O3(A-90,A-95,A-99),BeO(B-95, B-99),AlN,etc.;

(2) Semiconductor materials: Si, GaAs, SiGe, SiC, GaP, GaAs, AlGaAs etc.;

(3) Metal Material: Kovar alloy(4J29), 42 alloy;

Features:

a.High thermal conductivity;
b.Excellent hermeticity;
c.Excellent size control,surface finish and flatness,Semi-finished or finished (Ni/Au/Ag plated) products available;

Physical Properties:

Material wt% Tungsten Content wt% Copper Content g/m³ Density at 20℃ Thermal conductivity at 25℃ Coefficient of thermal expansion at 20℃    
W90Cu10 90±1 balance    17.0    180-190 6.5
W85Cu15 85±1 balance 16.4 190-200 7.0
W80Cu20 80±1 balance 15.6 200-210 8.3
W75Cu25 75±1 balance 14.9 220-230 9.0
W50Cu50 50±1 balance 12.2 310-340 12.5

 

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