OPUTE 4 W/m·K Thermal Interface Pad for Graphics Cards and GPU Heat Dissipation
OPUTE 4 W/m·K Thermal Interface Pad for Graphics Cards and GPU Heat Dissipation
GP40 Thermal Silicone Pad
OPUTE GP40 is a silicone rubber-based thermal interface material designed to provide efficient heat transfer between electronic components and heat sinks or chassis. With a thermal conductivity of 4.0 W/m·K, it offers excellent electrical insulation, flexibility, and conformability, making it ideal for low-pressure applications.
Key Features & Benefits
- High thermal conductivity of 4.0 W/m·K
- Suitable for low-pressure assembly applications
- Excellent dielectric insulation properties
- UL94 V-0 flame rating
- Double-sided tackiness for convenient positioning
- Flexible silicone material for uneven contact surfaces
- Wide operating temperature range from -50°C to +160°C
- Custom thicknesses, dimensions and die-cut shapes available
Typical Applications
- Mobile electronic devices
- Microprocessors and semiconductor chips
- Automotive engine control units (ECUs)
- Laptop and notebook computers
- Wireless communication hardware
Technical Specifications
Typical properties of GP40 Series Thermal Silicone Sheet.
| Property | Typical Value | Test Method |
|---|---|---|
| Material | Silicone Rubber | — |
| Color | Gray | Visual |
| Thickness | 0.5–3 mm | ASTM D374 |
| Density | 3.1 ± 0.2 g/cm³ | ASTM D792 |
| Hardness | 30–55 Shore C | ASTM D2240 |
| Thermal Conductivity | 4.0 W/m·K | ASTM D5470 |
| Thermal Resistance @20 psi, 1 mm | 0.72 °C·in²/W | ASTM D5470 |
| Breakdown Voltage (1 mm) | 9.8 kV | ASTM D149 |
| Volume Resistivity | 4.5 × 10¹⁰ Ω·cm | ASTM D257 |
| Compression Ratio @50 psi | 37.5% | ASTM D575-1991 |
| Tensile Strength | 0.25 MPa | ASTM D412-1998A |
| Elongation | 84.7% | ASTM D412-1998A |
| Dielectric Constant @1 MHz | 7.06 | ASTM D150 |
| Dielectric Loss | 0.0190 | ASTM D150 |
| Flammability Rating | UL94 V-0 | UL 94 |
| Thermal Weight Loss (120°C, 7 days) | 0.47% | ASTM E595-2006 |
| Operating Temperature | -50°C to +160°C | — |
Available Sizes & Customization
- Standard Sheet Sizes: 330 × 330 mm / 200 × 400 mm
- Thickness Range: 0.5–3 mm
- Hardness Tolerance: ±5 Shore C
- Customization: Custom sheet dimensions, thicknesses and die-cut shapes available upon request.
Looking for a Customized Thermal Pad Solution?
OPUTE provides customized thermal silicone pads for electronic thermal management applications. Contact us for technical specifications, samples and quotation support.
Request a QuoteNote: All technical values are typical values provided for reference. Product specifications should be confirmed before final application approval.