Product Overview
High thermal conductivity graphite heat spreaders and plates are increasingly used in electronics, LED lighting, and power module thermal management. With in-plane thermal conductivity up to 1500 W/(m·K), lightweight construction, and isotropic heat spreading properties, graphite heat sinks outperform traditional aluminum and copper solutions in demanding compact thermal applications.
Key Features
- Ultra-high in-plane thermal conductivity up to 1500 W/(m·K)
- Lightweight - 1/4 the density of copper
- Excellent heat spreading and surface temperature uniformity
- Low thermal resistance
- Flexible graphite sheet for conformable applications
- Rigid graphite plates for structural heat sinks
- Custom shapes, thicknesses, and adhesive backing available
Technical Specifications
| Parameter | Unit | Flexible Graphite Film | Rigid Graphite Plate |
|---|---|---|---|
| Material | - | Pyrolytic/Expanded Graphite | Isostatic Graphite |
| In-Plane Thermal Conductivity | W/(m·K) | 600 - 1500 | 100 - 180 |
| Through-Plane Conductivity | W/(m·K) | 5 - 15 | 100 - 180 |
| Density | g/cm³ | 1.0 - 2.2 | 1.70 - 1.90 |
| Thickness Range | mm | 0.05 - 1.5 | 3 - 50 |
| Max Sheet Size | mm | 400x600 | 500x1000 |
| Operating Temperature | °C | -40 to 400 | -200 to 2000 |
Applications
- Smartphone and tablet thermal management
- LED lighting and TV backlight heat spreading
- Power electronics and IGBT module cooling
- Laptop and gaming device heat dissipation
- Automotive electronics thermal solutions
- Battery thermal management systems
- 5G communications equipment cooling
Why Choose Jincheng Graphite Heat Sinks?
We supply precision-cut graphite heat spreaders and thermal plates for electronics, LED, and power module manufacturers. Our graphite thermal materials are available as flexible films for conformal heat spreading or rigid plates for structural heat sink applications. We offer die-cutting, custom shapes, and adhesive lamination services to meet your specific thermal management requirements.
FAQ
Q: How does graphite compare to copper for heat spreading?
A: Flexible graphite film has in-plane thermal conductivity of 600-1500 W/(m·K), which is 2-4 times that of copper (400 W/(m·K)). Combined with its light weight and ultra-thin profile, graphite heat spreaders are superior for spreading heat across large areas in compact electronic devices.
Q: Can graphite heat sinks be used with aluminum or copper bases?
A: Yes, graphite heat spreaders are often laminated onto aluminum or copper heat sink bases to improve heat distribution. The graphite rapidly spreads hot spot heat across the entire base area, improving overall heat sink efficiency. We can supply pre-laminated assemblies or bare graphite sheets for your own assembly.
Q: What thickness of graphite should I use for my application?
A: Optimal graphite thickness depends on heat flux, available space, and thermal resistance targets. Thicker graphite provides more heat capacity but higher through-plane resistance. Our technical team can help you select the optimal graphite type and thickness for your specific thermal design requirements.
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