eGRAF® Products > HS-400 Heat Sinks

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HS-400 Heat Sinks

Superior performance at 40% of the weight

GrafTech Natural Graphite heat sinks provide an alternative to thermal engineers when aluminum can no longer meet power dissipation requirements and copper is too heavy. Custom designed to meet the thermal and mechanical demands of each application, eGRAF heat sinks combine HS-400 Graphite fins bonded to an Aluminum or Copper base. HS-400 heat sinks with graphite fins and a copper base is comparable to copper in performance, but at 40% of the weight.

Material Option (Base - Fin) Tmax(°C) Rsa(°C/W) Temperature Distribution Weight (kg)
Al-Al 66.5 0.100 2.14
Al-HS-400 60.0 0.084 1.79
Cu-Cu 51.4 0.063 6.47
Cu-HS-400 53.2 0.068 3.62

Features and Benefits

  • 400 W/m-K Thermal Conductivity
  • Improve thermal performance without increasing weight
  • Reduce overall product weight
  • Designs can extend current fan/sink technologies
  • Improve shock and vibe resistance
  • Will not corrode in common environments
  • Ideal when Power >80W and Fin Height >25mm
  • Ideal for concentrated heat sources
  • Ideal when Aluminum is not effective, Copper is the alternative and weight is critical