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Momentive CTE-Matched TMP-EX Composite Heat Sink

  • Item No: TMP-EX
  • Manufacturer: Momentive
  • Technologies: High-performance composite heat sink with TPG* core
  • Package Size: Custom sizes available upon request
  • Shelf Life: contact us for details

CTE-Matched TMP-EX Composite Heat Sink is a high-performance thermal management solution that integrates a Thermal Pyrolytic Graphite (TPG) core (>1500 W/m·K)* with a coefficient of thermal expansion (CTE)-matched enclosure. This ensures exceptional thermal conductivity and reliability, particularly for microelectronics and optoelectronic applications.

By achieving CTE matching with semiconductors, this heat sink minimizes thermal stress and improves long-term durability, making it an ideal solution for power electronics, RF & microwave packaging, high-power LEDs, and laser diodes.


Key Features & Benefits

✅ Ultra-High Thermal Conductivity (>1500 W/m·K) – Enhances heat dissipation efficiency.
✅ CTE Matching to Semiconductors – Reduces thermal expansion mismatches.
✅ Lightweight Design – Maintains high thermal performance with lower weight.
✅ High Structural Reliability – Resistant to thermal cycling, vibration, and shock.
✅ Nickel & Gold Plating Options – Enhances corrosion resistance and solderability.

Reliability & Performance Testing

The TMP-EX Composite Heat Sink has been rigorously tested under industry-standard conditions, including:

✅ Thermal Cycling (-65°C to +150°C, 1,000 cycles) – Maintains thermal performance.
✅ Vibration Resistance (20G/32hr per axial) – Ensures structural integrity under stress.
✅ Shock Resistance (500G/1ms per axial) – Withstands extreme impact forces.
✅ No Measurable Thermal Conductivity Change After Testing – Proven long-term reliability.

Property TMP-EX (AlSiC12) TMP-EX (W85Cu) TMP-EX (Mo70Cu)
In-Plane Thermal Conductivity (W/m·K) 1060 1063 1057
Thru-Plane Thermal Conductivity (W/m·K) 435 455 416
Coefficient of Thermal Expansion (ppm/°C) 11 7.0 9.1
Density (g/cm³) 2.5 6.7 4.8
Parallelism (inch/mm) 0.0005 / 0.01 0.0005 / 0.01 0.0005 / 0.01
Flatness (inch/mm per inch/mm) 0.001 / 1 0.001 / 1 0.001 / 1
Surface Finish (Ra, µin/µm) 16 / 0.4 16 / 0.4 16 / 0.4
Plating Thickness (Ni, µin/µm) 160-250 / 4-6 160-250 / 4-6 160-250 / 4-6
Plating Thickness (Au, µin/µm) 40-80 / 1-2 40-80 / 1-2 40-80 / 1-2

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