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High Thermal Conductivity Graphite and Thermal Management Product (TMP)

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SEM Cross-section Image of TPG Graphite

Thermal Pyrolytic Graphite (TPG), a distinct synthetic material produced by Momentive via chemical vapor deposition, contains millions of layers with highly-oriented stacked graphene planes and offers excellent in-plane thermal conductivity (>1500 W/m-K) and very low density (2.25g/cm3).






 



Property comparison between commonly used thermal management materials

Material

Thermal Conductivity

(W/m-K)

Coefficient of Thermal Expansion

(10-6/oC)

Modulus

(GPa)

Density (gm/cm3)

Specific

Thermal Conductivity1)*

Aluminum

210

23.6

68

2.7

81

Copper

400

16.9

110

8.9

45

AlSiC

180

9.5

167

3.0

62

W85Cu

190

7.0

310

15.6

12

Mo70Cu

170

9.0

240

9.8

17

TPG Graphite

>1500 (in-plane)

0

30

2.25

650

<10 (through-plane)

24

11

1) Specific Thermal Conductivity: Thermal conductivity divided by density
Typical properties are average data and are not to be used as or to develop specification.

Cross Section of TPG Graphite-Metal Composite Heat Sink 



TPG composite with metal encapsulation works simultaneously to achieve high thermal conductivity from the TPG core and high mechanical strength from the metalshell. Momentive’s proprietary technology enables an intimate and strong bond between TPG and dissimilar metals, including Al, Cu, Sn, W, Mo, WCu, MoCu, and stainless steel.



Highlights:

  • Key Features:
    • Light weight
    • High thermal conductivity
    • Hermetic
    • CTE matching to semiconductors
    • Machinability
    • Platability
    • Solderability
    • Board level and chip level thermal management
  • Typical Benefits to high-power electronics:
  • 25 years of serving Telecommunication & Satellites, Military Aircraft, Radar Systems, and Unmanned Aerial Vehicles.
  • Recipient of Boeing’s Gold Supplier award and L-3’s Top 10 Supplier for quality and delivery.
  • AS9100 certified.

 

Momentive currently serves a number of industries that include:

  • Aerospace
  • Defense
  • Semiconductor
  • Telecommunication
  • Automotive
  • LED lighting
  • Laser
  • Medical

with a family of advanced thermal management products, which includes

  • TPG Thermal Levelers
  • TC1050 Heat Spreaders
  • TMP-EX Heat Sinks
  • TMP-FX Thermal Straps

TPG* Graphite


Potential applications:

Thermal leveler, wafer susceptor, thermal strap, heat sink fin, heat spreader, heat sink, cold plate, chip carrier, flange, laser submount, traveling wave tube mount, chassis, thermal core, insulated metal substrate, metal core PCB


Typical Applications of TPG-Based Thermal Management Products


Typical Applications of TPG-Based Thermal Management Products
* Silplusは、新日鉄住金化学株式会社の商標であり、許可を得て使用しています。

*The marks followed by an asterisk (*) are trademarks of Momentive Performance Materials Inc.