Universal Science™ UniPhase™ 7500 is a high-performance phase change thermal interface material (TIM). Featuring a non-silicone formulation, it offers a naturally tacky surface and a thermal conductivity of 7.5 W/Mk. This material serves as an effective alternative to conventional, messy thermal grease applications.
This thermal interface material significantly enhances cooling in demanding thermal applications. Its phase change occurs at 60 °C +/- 10 °C. The synergistic action of device mounting pressure and the material's phase change flow expels air voids at the interface, thereby reducing thermal resistance. Key benefits also include long-term reliability and the elimination of pump-out.
Supplied as die-cut preforms, this material accommodates a wide range of electronic applications, including DC/DC power converters. It is typically applied between any heat-dissipating, electrically isolated component and its corresponding heatsink.
Varying thicknesses are available, from 0.125 mm to 0.4 mm.
Benefits
- Quick to rework
- 7.5 W/mK bulk thermal conductivity
- Non-silicone formulation offers a naturally tacky surface
Features
- This non-silicone phase change TIM offers a naturally tacky surface
- It features fully characterized long-term reliability
- As an environmentally friendly solution, it meets regulatory requirements, including the RoHS and REACH directives
- Pump-out is eliminated
Recommended Uses
- Provides thermal connectivity for electrically isolated, heat-generating components to heatsinks
- Functions as a direct replacement for thermal grease in relevant applications
- Key applications include power supplies and power modules
Technical Data
Physical Properties
Source: Materials Direct
| Properties |
Test Method |
UniPhase 7500 |
| Color |
Visual |
Grey |
| Thickness – (mm) |
Visual |
0.125, 0.20, 0.25, 0.4 |
| Operating Temperature Range (°C) |
In House |
-40 - 125 |
| Thermal Impedance @ 10 psi & 70 ° (°C-cm2/W) |
ASTM D5470 |
0.10 |
| Thermal Impedance @ 50 psi & 70 ° (°C-cm2/W) |
ASTM D5470 |
0.06 |
Mechanical and Electrical Properties
Source: Materials Direct
| Properties |
Test Method |
UniPhase 2500 |
| Phase Change Temperature (°C) |
- |
60 °C +/- 10 °C |
| Thermal Conductivity (W/m-k) |
Hot Disk |
7.5 |
| Volume Resistivity (Ω-cm) |
ASTM D991 |
5.4 x 1015 |
| UL |
UL94 |
V0 |
| Dielectric Constant (@ 1 MHz) |
ASTM D150 |
30 |
UniPhase 7500™ Phase Change | Universal Science™
Available at 0.125 mm (94138), 0.2 mm (94139), 0.25 mm (94140), and 0.4 mm (94141)
Phase Change, Thermal Grease Replacements, Thermal Interface, Thermal Paste Alternatives
- Thermal conductivity in volume is 7.5 W/mK
- A non-silicone formula offers an inherently adhesive surface
- Can be readily reworked