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. 217-3835
BrandRS PRO
£10.40
Each
Units
2.9W/m·K Silicone +200°C -40°C Powdered Metal Oxides, Silicone Oil -40 → +200 °C -
RS Stock No. 554-311
BrandRS PRO
£5.56
Each
Units
0.65W/m·K Metal Oxide +200°C -40°C Powdered Metal Oxides, Silicone Oil -40 → +200 °C -
RS Stock No. 707-4736
BrandRS PRO
£16.67
Each
Units
5W/m·K Silicone +180°C -40°C - -40 → +180 °C -
RS Stock No. 909-2092
BrandRS PRO
£63.02
Each
Units
3.4W/m·K - +125°C -30°C - -30 → +125 °C -
RS Stock No. 300-8489
Mfr. Part No.HTCP20S
£14.23
Each
Units
2.5W/m·K Non-Silicone +130°C -50°C - -50 → +130 °C -
RS Stock No. 301-2826
Mfr. Part No.HTSP50T
£31.40
Each
Units
3W/m·K Silicone +200°C -50°C - -50 → +200 °C -
RS Stock No. 301-2810
Mfr. Part No.HTS35SL
£9.14
Each
Units
0.9W/m·K Silicone +200°C -50°C - -50 → +200 °C -
RS Stock No. 112-7229
Mfr. Part No.HTC10S
£3.73
Each
Units
0.9W/m·K Non-Silicone +130°C -50°C - -50 → +130 °C -
RS Stock No. 707-4724
BrandRS PRO
£14.83
Each
Units
3.6W/m·K Silicone +180°C -40°C - -40 → +180 °C -
RS Stock No. 774-2691
Mfr. Part No.WLPK 10
£24.25
Each
Units
10W/m·K Ceramic Synthetic Fluid +150°C -60°C - -60 → +150 °C -
RS Stock No. 113-0455
Mfr. Part No.HTC35SL
£9.14
Each
Units
0.9W/m·K Non-Silicone +130°C -50°C - -50 → +130 °C -
RS Stock No. 915-6118
BrandRS PRO
£15.78
Each
Units
4W/m·K Non-Silicone +150°C -50°C - -50 → +153 °C -
RS Stock No. 774-2697
Mfr. Part No.WLPK 05
£20.39
Each
Units
10W/m·K Ceramic Synthetic Fluid +150°C -60°C - -60 → +150 °C -
RS Stock No. 707-4733
BrandRS PRO
£10.54
Each
Units
1.8W/m·K Silicone +180°C -40°C - -40 → +180 °C -
RS Stock No. 300-8502
Mfr. Part No.HTCP700G
£186.37
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. 915-6105
BrandRS PRO
£12.26
Each
Units
2W/m·K Non-Silicone +150°C -50°C - -50 → +150 °C -
RS Stock No. 277-8200
Mfr. Part No.CT40-5
£9.40
Each
Units
0.63W/m·K Silicone +200°C -73°C - -73 → +200 °C -
RS Stock No. 362-9698
Mfr. Part No.GF2000-00-15-50CC
BrandBergquist
£88.14
Each
Units
2W/m·K Gap Filler 2000 +200°C -60°C - -60 → +200 °C -
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Q-Pad Q2 insulators are made up of a ...
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