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. 707-4578
BrandRS PRO
£13.37
Each
Units
150 x 150mm 1mm 150mm 150mm - 1.6W/m·K - Yes -40°C +200°C Shore A 15 - Grey -40 → +200 °C
RS Stock No. 794-3985
BrandRS PRO
£9.48
Each
Units
150 x 150mm 0.5mm 150mm 150mm - 10W/m·K Graphite Yes -50°C +150°C Shore A 80 - Black -50 → +150 °C
RS Stock No. 794-3973
BrandRS PRO
£10.47
Each
Units
150 x 150mm 0.16mm 150mm 150mm - 10W/m·K Graphite Yes -50°C +150°C Shore A 80 - Black -50 → +150 °C
RS Stock No. 758-0948
BrandRS PRO
£2.006
Each (In a Pack of 10)
Units
49.1 x 29.7mm 0.2mm 49.1mm 29.7mm - 1.8W/m·K - - -45°C +200°C - - Red -45 → +200 °C
RS Stock No. 707-4663
BrandRS PRO
£19.97
Each
Units
150 x 150mm 2mm 150mm 150mm - 3.2W/m·K - Yes -40°C +200°C Shore A 20 - Grey -40 → +200 °C
RS Stock No. 707-4774
BrandRS PRO
£69.25
Each
Units
150 x 150mm 0.5mm 150mm 150mm - 12W/m·K Gel - -45°C +200°C Shore OO 60 - Grey -45 → +200 °C
RS Stock No. 707-4657
BrandRS PRO
£17.32
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. 794-3979
BrandRS PRO
£8.37
Each
Units
150 x 150mm 0.16mm 150mm 150mm - 13W/m·K Graphite - -50°C +150°C Shore A 80 - Black -50 → +150 °C
RS Stock No. 794-3991
BrandRS PRO
£9.48
Each
Units
150 x 150mm 0.8mm 150mm 150mm - 10W/m·K Graphite Yes -50°C +150°C Shore A 80 - Black -50 → +150 °C
RS Stock No. 707-4783
BrandRS PRO
£102.06
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. 707-4604
BrandRS PRO
£15.56
Each
Units
150 x 150mm 1mm 150mm 150mm - 2.2W/m·K - Yes -40°C +200°C Shore A 10 - Red -40 → +200 °C
RS Stock No. 707-4711
BrandRS PRO
£60.68
Each
Units
150 x 150mm 1mm 150mm 150mm - 6W/m·K - Yes -40°C +200°C Shore A 14 - Grey -40 → +200 °C
RS Stock No. 915-6067
BrandRS PRO
£28.60
Each
Units
150 x 150mm 1mm 150mm 150mm - 6W/m·K Silicone - -55°C +200°C Shore OO 50 - Red -55 → +200 °C
RS Stock No. 758-0963
BrandRS PRO
£4.666
Each (In a Pack of 5)
Units
65.2 x 47.5mm 0.2mm 65.2mm 47.5mm - 1.8W/m·K - - -45°C +200°C - - Red -45 → +200 °C
RS Stock No. 707-4623
BrandRS PRO
£17.14
Each
Units
150 x 150mm 1mm 150mm 150mm - 1.95W/m·K - Yes -40°C +200°C Shore A 5 - Yellow -40 → +200 °C
RS Stock No. 794-3982
BrandRS PRO
£8.37
Each
Units
150 x 150mm 0.5mm 150mm 150mm - 13W/m·K Graphite - -50°C +150°C Shore A 80 - Black -50 → +150 °C
RS Stock No. 915-6076
BrandRS PRO
£49.03
Each
Units
150 x 150mm 1mm 150mm 150mm - 8W/m·K Silicone - -55°C +200°C Shore OO 60 - Grey -55 → +200 °C
RS Stock No. 915-6054
BrandRS PRO
£39.49
Each
Units
150 x 150mm 2mm 150mm 150mm - 4W/m·K Silicone - -55°C +200°C Shore OO 40 - Blue -55 → +200 °C
RS Stock No. 758-0941
BrandRS PRO
£1.067
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. 707-4768
BrandRS PRO
£50.98
Each
Units
150 x 150mm 1mm 150mm 150mm - 6W/m·K Gel - -45°C +200°C Shore OO 50 - Red -45 → +200 °C