Thermal Pads

Thermal pads or thermal gap pads are materials that provide a thermal interface between heatsinks (devices or substances for absorbing unwanted or excess heat) and electronic devices. A thermal pad is particularly useful where air gaps, rough surface textures or uneven surface topography prevent the use of traditional grease or paste. Pads are often self adhesive and  less messy and easier to install than thermal paste.

RS Components have an extensive range of products designed for the heating or cooling of electronic devices to help maintain the right temperature in order to work effectively.

How do thermal pads work?

By keeping the internal components of electronic products from wear and tear resulting from high circuit board temperatures, thermal pads help to provide extended longevity. They are also important in providing safety by eliminating the possibility of electrical fires. Thermal pads become soft at high temperatures which means they can fill imperfections in the surface for better conduction qualities and to minimise potential damage to components. They are manufactured in a variety of standard thicknesses and dimensions but can also be custom fabricated to fit various applications.,/p>

Typical Applications

Thermal pads and thermal paste both work in the same way by transferring heat from hot areas of a circuit board into a heatsink. They are often used on the following to provide better heat transfer.

  • Flat panel displays
  • LED (light emitting diode) displays
  • Engine control units
  • Computer hard drives, CPU
  • Wireless communication hardware

Does thermal pad thickness matter?

A greater thickness allows the pad to absorb more deformations in the heatsink surface . However a thicker thermal pad is worse in regarding to heat transfer.

Can you reuse thermal pads?

Unlike thermal paste, thermal pads can be reused so long as the pad is clean and has not been moved, touched, damaged or stretched.


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Description Price Dimensions Thickness Length Width Diameter Thermal Conductivity Material Self-Adhesive Minimum Operating Temperature Maximum Operating Temperature Hardness Material Trade Name Colour Operating Temperature Range
RS Stock No. 722-6723
BrandRS PRO
SGD59.35
Each
units
150 x 150mm 0.8mm 150mm 150mm - 4W/m·K Non-Silicone - -40°C +105°C Shore OO 80 - Red -40 → +105 °C
RS Stock No. 174-5700
BrandRS PRO
SGD43.32
Each
units
300 x 200 x 2mm 2mm 300mm 200mm - 2.8W/m·K Silicone Yes -60°C +200°C 50 Shore OO - Grey -60 → +200 °C
RS Stock No. 174-5693
BrandRS PRO
SGD17.82
Each
units
300 x 200mm 1.5mm 300mm 200mm - 2W/m·K Silicone Yes -60°C +200°C Shore OO 50 - Grey -60 → +200 °C
RS Stock No. 758-0938
BrandRS PRO
SGD1.103
Each (In a Pack of 10)
units
21 x 19.9mm 0.2mm 21mm 19.9mm - 1.8W/m·K - - -45°C +200°C - - Red -45 → +200 °C
RS Stock No. 174-5699
BrandRS PRO
SGD31.99
Each
units
300 x 200 x 1.5mm 1.5mm 300mm 200mm - 2.8W/m·K Silicone Yes -60°C +200°C 50 Shore OO - Grey -60 → +200 °C
RS Stock No. 909-2070
BrandRS PRO
SGD17.57
Each
units
150 x 150mm 0.06mm 150mm 150mm - 2.5W/m·K - No -45°C +125°C - - Grey -45 → +125 °C
RS Stock No. 707-4783
BrandRS PRO
SGD170.42
Each
units
150 x 150mm 1mm 150mm 150mm - 12W/m·K Gel - -45°C +200°C Shore OO 60 - Grey -45 → +200 °C
RS Stock No. 758-0941
BrandRS PRO
SGD1.604
Each (In a Pack of 10)
units
28 x 27.3mm 0.2mm 28mm 27.3mm - 1.8W/m·K - - -45°C +200°C - - Red -45 → +200 °C
RS Stock No. 707-4746
BrandRS PRO
SGD63.59
Each
units
150 x 150mm 2mm 150mm 150mm - 2W/m·K Gel - -45°C +200°C Shore OO 30 - White -45 → +200 °C
RS Stock No. 707-4718
BrandRS PRO
SGD12.52
Each
units
150 x 150mm 0.18mm 150mm 150mm - 1.4W/m·K - - -40°C +200°C Shore A 80 - Yellow -40 → +200 °C
RS Stock No. 915-6051
BrandRS PRO
SGD60.74
Each
units
150 x 150mm 1.5mm 150mm 150mm - 4W/m·K Silicone - -55°C +200°C Shore OO 40 - Blue -55 → +200 °C
RS Stock No. 707-4626
BrandRS PRO
SGD22.01
Each
units
150 x 150mm 0.5mm 150mm 150mm - 1.95W/m·K - Yes -40°C +200°C Shore A 5 - Yellow -40 → +200 °C
RS Stock No. 707-4758
BrandRS PRO
SGD53.82
Each
units
150 x 150mm 1mm 150mm 150mm - 4W/m·K Gel - -45°C +200°C Shore OO 40 - Blue -45 → +200 °C
RS Stock No. 174-5703
BrandRS PRO
SGD59.79
Each
units
300 x 200 x 1mm 1mm 300mm 200mm - 4.5W/m·K Silicone Yes -60°C +200°C 60 Shore OO - Grey -60 → +200 °C
RS Stock No. 707-4682
BrandRS PRO
SGD74.73
Each
units
150 x 150mm 1.5mm 150mm 150mm - 4W/m·K - Yes -40°C +200°C Shore A 25 - Grey -40 → +200 °C
RS Stock No. 707-4635
BrandRS PRO
SGD32.05
Each
units
150 x 150mm 1.5mm 150mm 150mm - 1.95W/m·K - Yes -40°C +200°C Shore A 5 - Yellow -40 → +200 °C
RS Stock No. 707-4641
BrandRS PRO
SGD57.79
Each
units
150 x 150mm 3mm 150mm 150mm - 1.95W/m·K - Yes -40°C +200°C Shore A 5 - Yellow -40 → +200 °C
RS Stock No. 707-4742
BrandRS PRO
SGD59.45
Each
units
150 x 150mm 1.5mm 150mm 150mm - 2W/m·K Gel - -45°C +200°C Shore OO 30 - White -45 → +200 °C
RS Stock No. 909-2073
BrandRS PRO
SGD24.71
Each
units
150 x 150mm 0.13mm 150mm 150mm - 2.5W/m·K - No -45°C +125°C - - Grey -45 → +125 °C
RS Stock No. 707-4613
BrandRS PRO
SGD45.51
Each
units
150 x 150mm 2.5mm 150mm 150mm - 2.2W/m·K - Yes -40°C +200°C Shore A 10 - Red -40 → +200 °C
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