COOTHERM CIRCALOK 6037
Harmonization Code : 3907.30.00.15 | Epoxide resin, halogen-free
Main features
- Thermally Conductive Bonding
- 500,000 cP Resin Viscosity
- 1.2 W/(m K) Thermal Conductivity
Product Description
CoolTherm® EP-6037 Epoxy Resin is a thermally conductive epoxy resin formulated for use with selected CoolTherm hardeners to create two-component bonding systems. The black or green paste is used in semiconductor and electronics assemblies to form thermally conductive joints in fabricated heat sinks, between heat sinks and power devices, and between semiconductors or transistors and heat sinks. The resin has a typical viscosity of 500,000 cP at 25°C and a specific gravity of 2.35. Processing and final properties depend on whether CoolTherm EP-6010 or EP-6252 hardener is selected.
Key features
- Thermally conductive epoxy resin: The resin is paired with selected CoolTherm hardeners for heat-sink and power-device bonding.
- Controlled paste consistency: Typical resin viscosity is 500,000 cP at 25°C.
- Two documented hardener options: EP-6010 and EP-6252 provide different mix ratios and cured-property profiles.
Applications / Suitable for
- Thermally conductive joints in fabricated heat sinks
- Bonding heat sinks to power devices
- Bonding semiconductors and transistors to heat sinks
TDS, SDS & Technical Documents
Technical Specifications
General Properties
Physical Properties
Additional Information
As-supplied / before-processing properties
Typical as-supplied or mixed-state values unless otherwise stated. These values are not sales specifications.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Appearance | Black or green paste | N/A | As supplied |
| Viscosity | 500,000 | cP | At 25°C |
| Specific gravity | 2.35 | N/A | As supplied |
| Mix ratio with EP-6010 | 100:3.4 | parts by weight | Resin : hardener |
| Working life with EP-6010 | 2 | h | At 25°C |
| Mix ratio with EP-6252 | 100:7.1 | parts by weight | Resin : hardener |
| Working life with EP-6252 | 3 | h | At 25°C |
| Cure options | 24 h at 25°C; 2 h at 65°C | N/A | Both documented hardener systems |
After-processing / final-state properties
Typical final-state values under the stated system and test conditions. These values are not sales specifications.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Thermal conductivity | 1.2 | W/m·K | With EP-6010; ISO 22007-2 Hot Disc |
| CTE | 52 | ppm/°C | With EP-6010 |
| Glass-transition temperature | 106 | °C | With EP-6010; TMA |
| Hardness | 93 | Shore D | With EP-6010 |
| Thermal conductivity | 1.1 | W/m·K | With EP-6252; ISO 22007-2 Hot Disc |
| CTE | 31 | ppm/°C | With EP-6252 |
| Glass-transition temperature | 70 | °C | With EP-6252; TMA |
| Hardness | 92 | Shore D | With EP-6252 |
