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
$30.45
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
$18.02
Each
units
0.65W/m·K Metal Oxide +200°C -40°C Powdered Metal Oxides, Silicone Oil -40 → +200 °C -
RS Stock No. 300-8489
Mfr. Part No.HTCP20S
$42.92
Each
units
2.5W/m·K Non-Silicone +130°C -50°C - -50 → +130 °C -
RS Stock No. 301-2826
Mfr. Part No.HTSP50T
$91.35
Each
units
3W/m·K Silicone +200°C -50°C - -50 → +200 °C -
RS Stock No. 915-6118
BrandRS PRO
$30.31
Each
units
4W/m·K Non-Silicone +150°C -50°C - -50 → +153 °C -
RS Stock No. 707-4724
BrandRS PRO
$36.34
Each
units
3.6W/m·K Silicone +180°C -40°C - -40 → +180 °C -
RS Stock No. 707-4736
BrandRS PRO
$46.42
Each
units
5W/m·K Silicone +180°C -40°C - -40 → +180 °C -
RS Stock No. 301-2810
Mfr. Part No.HTS35SL
$23.86
Each
units
0.9W/m·K Silicone +200°C -50°C - -50 → +200 °C -
RS Stock No. 665-4846
Mfr. Part No.CW7270
$24.74
Each
units
0.71W/m·K Non-Silicone +200°C -15°C - -15 → +200 °C -
RS Stock No. 915-6105
BrandRS PRO
$26.16
Each
units
2W/m·K Non-Silicone +150°C -50°C - -50 → +150 °C -
RS Stock No. 707-4733
BrandRS PRO
$25.59
Each
units
1.8W/m·K Silicone +180°C -40°C - -40 → +180 °C -
RS Stock No. 277-8200
Mfr. Part No.CT40-5
$48.49
Each
units
0.63W/m·K Silicone +200°C -73°C - -73 → +200 °C -
RS Stock No. 113-0455
Mfr. Part No.HTC35SL
$22.06
Each
units
0.9W/m·K Non-Silicone +130°C -50°C - -50 → +130 °C -
RS Stock No. 665-4855
Mfr. Part No.CW7250
$27.45
Each
units
1.85W/m·K Boron Nitride +200°C -73°C - -73 → +200 °C -
RS Stock No. 915-6111
BrandRS PRO
$399.15
Each
units
4W/m·K Non-Silicone +150°C -50°C - -50 → +152 °C -
RS Stock No. 127-035
Mfr. Part No.TIC1000A-00-00-5.0CC
BrandBergquist
$99.50
Each
units
1.5W/m·K Non-Silicone +150°C - - Maximum of +150 °C -
RS Stock No. 362-9698
Mfr. Part No.GF2000-00-15-50CC
BrandBergquist
$171.06
Each
units
2W/m·K Gap Filler 2000 +200°C -60°C - -60 → +200 °C -
RS Stock No. 124-7692
Mfr. Part No.8617-85ml
$68.23
Each
units
1W/m·K - +165°C -68°C - -68 → +165 °C -
RS Stock No. 915-6109
BrandRS PRO
$165.32
Each
units
2W/m·K Non-Silicone +150°C -50°C - -50 → +151 °C -
RS Stock No. 362-9682
Mfr. Part No.GF1000-00-15-50CC
BrandBergquist
$145.28
Each
units
1W/m·K Gap Filler 1000 +175°C -60°C - -60 → +175 °C -
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