Thermal Adhesives

Thermal adhesives are a type of adhesive commonly used to attach a heatsink to electronic components. The glue is typically a two part epoxy resin which cures to form a strong bond. They are thermally conductive and usually electrically insulating, helping to dissipate heat from the device to prevent overheating or a breakdown.

The main function of a thermal adhesive is to ensure there is no air space between which would act as a thermal insulator. It fills in the microscopic imperfections on the heatsink and device.

There are a variety of thermal compound adhesives available that are ideal for eliminating the air gap under a heat sink. The most common types of thermally conductive adhesives are:

  • Thermal paste

  • Thermal glue

  • Thermal adhesive tape

  • Thermal Grease

  • Thermal Gap Pads


Thermal adhesives are used in a variety of industries and applications such as:

  • Heat sink bonding

  • Potting/encapsulating sensors

  • BGA die heat spreader interface

  • Chip scale packages

  • Power semiconductors

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Part Details Brand Stock Type Product Material Package Type Package Size Thermal Conductivity Cure Time Maximum Operating Temperature Minimum Operating Temperature Operating Temperature Range
Electrolube Metal Oxide Thermal Adhesive, 24 h Cure, 75 ml Syringe Electrolube 267 Thermal Conductive Adhesive Metal Oxide Syringe 75 ml 1.8W/mK 24 h +230°C -50°C -50 → +230 °C
Acc Silicones Silicone Thermal Adhesive, 8 h Cure, 310 ml Cartridge Acc Silicones 237 Thermal Conductive Adhesive Silicone Cartridge 310 ml 1.55W/mK 8 h +220°C -50°C -50 → +220 °C
Electrolube Ethoxy Thermal Adhesive, 24 h Cure, 75 ml Syringe Electrolube 123 Thermal Conductive Adhesive Ethoxy Syringe 75 ml 1.8W/mK 24 h +230°C -50°C -50 → +230 °C
Electrolube Thermal Adhesive, 1 kg Container Electrolube 5 Thermally Conductive Phase Change Material - Container 1 kg 3.5W/mK - +125°C -40°C -40 → +125 °C
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