Thermal Grease

Thermal grease is known by a number of names including:
• CPU grease
• heat paste
• heat sink compound or paste
• thermal compound, gel or paste
• thermal interface material.
It is a thermally conductive material which is usually electrically insulating which helps to dissipate heat from a device. Its main function 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.
It is most commonly used between a CPU and a heat sink to maximise heat transfer. It is also used on other electronic components which create heat and also need a heat sink such as MOSFET transistors.
There are other types of products to eliminate the air gap under a heat sink:
• Thermal Adhesive
• Thermal Gap Pads

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Description Price Thermal Conductivity Material Maximum Operating Temperature Minimum Operating Temperature Chemical Component Operating Temperature Range Physical State
RS Stock No. 180-5311
BrandRS PRO
£62.76
Each
Units
2.7W/m·K Silicone +300°C -30°C - -30 → +300 °C Paste
RS Stock No. 180-5306
BrandRS PRO
£3.80
Each
Units
1.4W/m·K Silicone +300°C -30°C - -30 → +300 °C Paste
RS Stock No. 180-5299
BrandRS PRO
£44.82
Each
Units
5W/m·K Silicone +200°C -50°C - -50 → +200 °C Paste
RS Stock No. 180-5301
BrandRS PRO
£20.90
Each
Units
2W/m·K Silicone +200°C -50°C - -50 → +200 °C Paste
RS Stock No. 180-5314
BrandRS PRO
£138.22
Each
Units
2W/m·K Silicone +200°C -60°C - -60 → +200 °C Paste
RS Stock No. 180-5303
BrandRS PRO
£91.35
Each
Units
2W/m·K Silicone +200°C -50°C - -50 → +200 °C Paste
RS Stock No. 180-5305
BrandRS PRO
£180.36
Each
Units
5W/m·K Silicone +200°C -50°C - -50 → +200 °C Paste
RS Stock No. 180-5313
BrandRS PRO
£322.22
Each
Units
5.2W/m·K Silicone +300°C -30°C Carbon Black Mesoporous, Metal Filler, Methyltriacetoxysilane, Silicone-A -30 → +300 °C Paste
RS Stock No. 180-5312
BrandRS PRO
£126.56
Each
Units
3.9W/m·K Silicone +300°C -30°C - -30 → +300 °C Paste
RS Stock No. 300-8489
Mfr. Part No.HTCP20S
£14.51
Each
Units
2.5W/m·K Non-Silicone +130°C -50°C - -50 → +130 °C -
RS Stock No. 301-2826
Mfr. Part No.HTSP50T
£32.02
Each
Units
3W/m·K Silicone +200°C -50°C - -50 → +200 °C -
RS Stock No. 301-2810
Mfr. Part No.HTS35SL
£9.32
Each
Units
0.9W/m·K Silicone +200°C -50°C - -50 → +200 °C -
RS Stock No. 112-7229
Mfr. Part No.HTC10S
£3.81
Each
Units
0.9W/m·K Non-Silicone +130°C -50°C - -50 → +130 °C -
RS Stock No. 774-2691
Mfr. Part No.WLPK 10
£26.38
Each
Units
10W/m·K Ceramic Synthetic Fluid +150°C -60°C - -60 → +150 °C -
RS Stock No. 113-0455
Mfr. Part No.HTC35SL
£9.32
Each
Units
0.9W/m·K Non-Silicone +130°C -50°C - -50 → +130 °C -
RS Stock No. 774-2697
Mfr. Part No.WLPK 05
£25.80
Each
Units
10W/m·K Ceramic Synthetic Fluid +150°C -60°C - -60 → +150 °C -
RS Stock No. 300-8502
Mfr. Part No.HTCP700G
£170.79
Each
Units
2.5W/m·K Non-Silicone +130°C -50°C - -50 → +130 °C -
RS Stock No. 665-4855
Mfr. Part No.CW7250
£10.66
Each
Units
1.85W/m·K Boron Nitride +200°C -73°C - -73 → +200 °C -
RS Stock No. 665-4846
Mfr. Part No.CW7270
£9.68
Each
Units
0.71W/m·K Non-Silicone +200°C -15°C - -15 → +200 °C -
RS Stock No. 277-8200
Mfr. Part No.CT40-5
£22.21
Each
Units
0.63W/m·K Silicone +200°C -73°C - -73 → +200 °C -
Related Products
RS PRO 1805301 Silicone Thermal Interface Putty, 2.0W/mK. ...
Description:
RS PRO 1805301 Silicone Thermal Interface Putty, 2.0W/mK. High compressibility, non-curing, pump out resistant, long term stability, electrical insulation, siloxane volatiles D4∼D20 0%Applications Battery packs, battery housings, power supplies, power cable connectors.Automotive ECU (electronic control units), power supplies, microprocessors, displays and consumer electronics.
RS PRO 1805302 Silicone Thermal Interface Putty, 3.2W/mK. ...
Description:
RS PRO 1805302 Silicone Thermal Interface Putty, 3.2W/mK. High compressibility, non-curing, pump out resistant, long term stability, electrical insulation, siloxane volatiles D4∼D20 0%Applications Battery packs, battery housings, power supplies, power cable connectors. Automotive ECU (electronic control units), power supplies, microprocessors, displays and consumer electronics.
RS PRO 1805310 Silicone Thermal Interface Grease 1.4W/mK. ...
Description:
RS PRO 1805310 Silicone Thermal Interface Grease 1.4W/mK. high performancegood thermal conductivityeasy to assemblehigh stabiltydoes not harden with time ApplicationsDisplays, lighting protection. PDP TV, LCD CCFL and LCD LED display backlight, LED signage, projectors and new display technology. Consumer and industrial electronics Mobile telephone, communication base station, laptop, notebook, computer ...
RS PRO 1805311 Silicone Thermal Interface Grease 2.7W/mK. ...
Description:
RS PRO 1805311 Silicone Thermal Interface Grease 2.7W/mK. Good thermal conductivity, easy to assemble, high stability, does not harden with time.Applications Displays, lighting protection. PDP TV, LCD CCFL and LCD LED display backlight, LED signage, projectors and new display technology. Consumer and industrial electronics Mobile telephone, communication base station, laptop, ...