What is Graphite Sheet?
Graphite Pads & Sheets are composed of graphite, the isotope of pure carbon that arranges itself in stacked sheets. Graphite’s sheet-like crystals, graphene, offers superior in-plane thermal conductivity compared to its through-plane thermal conductivity. With low mass and high heat transfer capabilities, Graphite Pads & Films are high performance, high heat spreading thermal interface materials available in ultra-thin and light weight configurations.
Why use Graphite Sheets?
Thermal Conductivity
Graphite’s crystalline structure also enables electricity to easily pass through the material, making it an electrically conductive thermal interface material. As a result, Graphite Products are used when the key design criteria require not only excellent thermal management but also electrical conductivity.
High Temperature Resistance
Graphite materials have high temperature resistance and can be used in applications at temperatures beyond 200°C. At temperatures beyond 200°C, graphite films should be used in a vacuum environment to prevent oxidation and performance reduction. Graphite can withstand up to 3300°C (6000°F) prior to material degradation.
EMI Shielding
Graphite films can be used for EMI shielding up to the GHz range, with superior attenuation.
Protective Layer
Graphite’s sheet-like structure enables a limited amount of bending but can be used in conjunction with a protective layer to prevent flaking as it has high in-plate stiffness. Unprotected graphite can produce particulates, which can cause electrical shorting and contamination for sensitive environments.
Our Graphite Films Benefits?
- No hardening or outgassing => Long term stability
- High temperature resistance => Maintains integrity of the component
- Soft and flexible => gives excellent low stress vibration dampening and shock absorbing characteristics
- Silicone free as ALL silicone base pads can bleed
- Anisotropic thermal conductivity => Excellent thermal management for demanding applications
How to choose the right Graphite Sheets for your application?
Choosing the Graphite Product which is appropriate with user’s application depends on many Thermal Management Design criteria: Heat Dissipation, Clamping Design, Device Footprint, Working Temperature, Clamping Pressure, Pressure limits, Surface Finish, Electrical isolation, Reworkability, Packaging Requirements, …
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