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. 794-3989
BrandRS PRO
SGD12.16
Each
units
150 x 150mm 0.5mm 150mm 150mm - 8W/m·K Graphite - -50°C +150°C Shore A 80 - Black -50 → +150 °C
RS Stock No. 707-4673
BrandRS PRO
SGD59.60
Each
units
150 x 150mm 1mm 150mm 150mm - 4W/m·K - Yes -40°C +200°C Shore A 25 - Grey -40 → +200 °C
RS Stock No. 909-2049
BrandRS PRO
SGD2.554
Each (In a Pack of 10)
units
49 x 21mm 0.127mm 49mm 21mm - 2.5W/m·K - No -45°C +125°C - - Grey -45 → +125 °C
RS Stock No. 707-4597
BrandRS PRO
SGD36.92
Each
units
150 x 150mm 3mm 150mm 150mm - 1.6W/m·K - Yes -40°C +200°C Shore A 15 - Grey -40 → +200 °C
RS Stock No. 707-4590
BrandRS PRO
SGD14.32
Each
units
150 x 150mm 0.5mm 150mm 150mm - 2.2W/m·K - Yes -40°C +200°C Shore A 10 - Red -40 → +200 °C
RS Stock No. 707-4584
BrandRS PRO
SGD32.22
Each
units
150 x 150mm 2mm 150mm 150mm - 1.6W/m·K - Yes -40°C +200°C Shore A 15 - Grey -40 → +200 °C
RS Stock No. 707-4657
BrandRS PRO
SGD28.77
Each
units
150 x 150mm 1mm 150mm 150mm - 3.2W/m·K - Yes -40°C +200°C Shore A 20 - Grey -40 → +200 °C
RS Stock No. 915-6086
BrandRS PRO
SGD23.51
Each
units
150 x 150mm 1mm 150mm 150mm - 2W/m·K Non-Silicone - -40°C +125°C Shore OO 30 - Pink -40 → +125 °C
RS Stock No. 707-4679
BrandRS PRO
SGD40.10
Each
units
150 x 150mm 0.5mm 150mm 150mm - 4W/m·K - Yes -40°C +200°C Shore A 25 - Grey -40 → +200 °C
RS Stock No. 707-4588
BrandRS PRO
SGD28.55
Each
units
150 x 150mm 2.5mm 150mm 150mm - 1.6W/m·K - Yes -40°C +200°C Shore A 15 - Grey -40 → +200 °C
RS Stock No. 758-0982
BrandRS PRO
SGD16.908
Each (In a Pack of 5)
units
127.7 x 72.5mm 0.2mm 127.7mm 72.5mm - 1.8W/m·K - - -45°C +200°C - - Red -45 → +200 °C
RS Stock No. 909-2051
BrandRS PRO
SGD4.66
Each (In a Pack of 10)
units
65 x 47.5mm 0.127mm 65mm 47.5mm - 2.5W/m·K - No -45°C +125°C - - Grey -45 → +125 °C
RS Stock No. 722-6732
BrandRS PRO
SGD66.93
Each
units
150 x 150mm 1mm 150mm 150mm - 4W/m·K Non-Silicone - -40°C +105°C Shore OO 80 - Red -40 → +105 °C
RS Stock No. 758-0926
BrandRS PRO
SGD1.123
Each (In a Pack of 10)
units
16.5 x 15.9mm 0.2mm 16.5mm 15.9mm - 1.8W/m·K - - -45°C +200°C - - Red -45 → +200 °C
RS Stock No. 174-5691
BrandRS PRO
SGD11.06
Each
units
300 x 200mm 0.5mm 300mm 200mm - 2W/m·K Silicone Yes -60°C +200°C Shore OO 50 - Grey -60 → +200 °C
RS Stock No. 174-5715
BrandRS PRO
SGD36.63
Each
units
200 x 200 x 1mm 1mm 200mm 200mm - 3W/m·K Non-Silicone Yes -40°C +125°C 45 Shore OO - Grey -40 → +125 °C
RS Stock No. 915-6102
BrandRS PRO
SGD102.79
Each
units
150 x 150mm 2mm 150mm 150mm - 4W/m·K Non-Silicone - -40°C +125°C Shore OO 30 - Blue -40 → +125 °C
RS Stock No. 174-5692
BrandRS PRO
SGD13.41
Each
units
300 x 200mm 1mm 300mm 200mm - 2W/m·K Silicone Yes -60°C +200°C Shore OO 50 - Grey -60 → +200 °C
RS Stock No. 174-5716
BrandRS PRO
SGD49.51
Each
units
200 x 200 x 1.5mm 1.5mm 200mm 200mm - 3W/m·K Non-Silicone Yes -40°C +125°C 45 Shore OO - Grey -40 → +125 °C
RS Stock No. 174-5701
BrandRS PRO
SGD65.45
Each
units
300 x 200 x 3mm 3mm 300mm 200mm - 2.8W/m·K Silicone Yes -60°C +200°C 50 Shore OO - Grey -60 → +200 °C
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