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Universal Science UniGap 1000 – 3.5mm
August 5, 2019
Universal Science UniPhase 4000 COB – 0.125mm
Silicon Free - Phase Change Interface Material
£0.00
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- Silicon Free with Low thermal resistance
- Highly reliable and consistent thermal interface for demanding applications such as LED COB
- Non-reinforced film
178 Sheets In Stock
Description
UniPhase 4000-COB is a non silicon, high performance, phase changing thermal interface material, formulated to function as a superb alternative to messy and inconsistent thermal grease. Supplied as custom cut parts or in sheets, UniPhase 4000-COB will flow at a phase change temperature of 50°C and conform to the differing surface textures between a heatsink and LED COB or other device. In combination with device mounting pressure and phase change flow, UniPhase 4000-COB expels air voids at the interface helping to reduce thermal resistance.
Benefits
- Increases the lifetime of LED COB modules by effectively reducing chip temperature
- Delivers a consistent and reliable thermal interface
- Mounting pressures and phase change flow expels air between uneven surfaces reducing thermal impedance
- Delivers a thin bond line between surfaces helping to improve thermal performance
Features
- Silicon Free with Low thermal resistance
- Highly reliable and consistent thermal interface for demanding applications such as LED COB
- Non-reinforced film
Recommended Uses
- Highly suitable for LED COB modules
- Typically used to thermally connect an electrically isolated heat generating component to a heatsink
- Within an application to replace thermal grease
- Power supplies and power modules
Physical Properties (for a typical thickness)
| Property (unit) | Test Method | UniPhase 4000-COB |
|---|---|---|
| Thickness (mm) | Visual | 0.127 |
| Max Operating Temp.(°C) | In House | 125 |
| Thermal Conductivity (W/mK) | ASTM D5470 | 4.0 |
| Thermal Impedance @ 20 psi (°C-cm²/W) | ASTM D5470 | 0.10 |
Mechanical and Electrical Properties
| Property (unit) | Test Method | UniPhase 4000-COB |
|---|---|---|
| Volume Resistivity (Ω-cm) | ASTM D257 | 3.0 x 10¹² |
| Density | ASTM D149 | 2.87 g/cc |
Availability
| Supplied in custom die-cut preforms and pads on sheets or rolls |
| Available in a variety of thicknesses to suit individual application requirements |
Materials Direct
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A division of Universal Science UK
www.universal-science.com
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