The SF305 thermal grease sheet represents an advanced phase change thermal interface material for CPU and GPU cooling, delivering 3.5 W/m·K thermal conductivity. This innovative product serves as an easy-to-install thermal interface solution for server processors, overcoming traditional thermal paste limitations. Engineered specifically for high-performance thermal management in data center servers, it undergoes phase transition at 55°C to perfectly fill microscopic irregularities. The material provides reliable thermal interface for automotive power modules, ensuring consistent performance under demanding conditions. As a long-lasting thermal solution for power electronics, it eliminates pump-out effect and maintains optimal thermal resistance throughout product lifespan.
Key Features:
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3.5 W/m·K Thermal Conductivity
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UL 94 V-0 Flame Retardant Certified
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Enhanced Dielectric Strength (>8 kV/mm)
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Wide Temperature Range (-5°C to 200°C)
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Multiple Thickness Options (0.3-10.0mm)
Key Features & Benefits:
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Reliable Thermal Conductivity: Offers a thermal conductivity of 1.5 W/m·K, effectively managing heat in a wide range of general-purpose applications.
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Excellent Electrical Insulation: Features high dielectric strength, preventing short circuits and enhancing the safety and reliability of your electronic assemblies.
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Soft & Compressible: The soft silicone material conforms well to uneven surfaces, ensuring good interfacial contact and low thermal resistance with minimal assembly pressure.
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Easy to Handle & Install: Comes in sheets or pre-cut sizes, allowing for simple, clean, and efficient manual or semi-automated installation, reducing production time.
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Durable & Long-Lasting: Provides long-term stability against aging, drying out, or pump-out, ensuring consistent performance over the product’s lifespan.
Typical Applications:
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LED Lighting: Heat dissipation for LED drivers, PCBs, and low-power lamp housings.
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Power Supplies: Thermal management for transformers, low-power MOS tubes, and components within AC-DC adapters.
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Consumer Electronics: Cooling for set-top boxes, home appliances, and battery packs.
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Automotive Electronics: Auxiliary heat dissipation for control modules and infotainment systems.
Specifications Table:
| Property | Value/Specification | Test Method | Notes / Significance |
|---|---|---|---|
| Thermal Properties | |||
| Thermal Conductivity | 3.5 W/m·K | ASTM D5470 | Core performance metric for heat transfer capability. |
| Thermal Resistance | < 0.5 °C-in²/W | ASTM D5470 | Depends on thickness and pressure; lower is better. |
| Physical Properties | |||
| Available Thickness | 0.3 – 10.0mm | – | Custom thicknesses available upon request. |
| Thickness Tolerance | ±0.1 mm | – | Ensures consistent gap filling. |
| Hardness | Shore OO 50 (±10) | ASTM D2240 | Measures softness; ideal for fragile components. |
| Compression Set | < 20% (22 hrs @ 70°C) | ASTM D395 | Indicates long-term resilience and stress relaxation. |
| Density | 3.0 g/cm³ | – | – |
| Electrical Properties | |||
| Dielectric Strength | ≥ 6.0 kV/mm | ASTM D149 | High voltage breakdown resistance for safety. |
| Volume Resistivity | ≥ 1.5 x 10¹³ Ω·cm | ASTM D257 | Excellent electrical insulation properties. |
| Reliability & Stability | |||
| Continuous Operating Temp. | -50 °C to +200 °C | – | Suitable for most general applications. |
| UL 94 Rating | V-0 | UL 94 | Certified flame retardant for enhanced safety. |
| Service Life | > 100,000 hours @ 105°C | – | Predicts long-term reliability under stress. |
The SF105 is the ideal, cost-effective thermal interface material for your projects that do not require high thermal performance but demand dependable insulation and basic heat dissipation.
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