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. 283-3638
Mfr. Part No.SP400-0.007-00-122
BrandBergquist
SGD0.642
Each (In a Pack of 50)
units
28.96 x 20.57mm 0.178mm 28.96mm 20.57mm - 0.9W/m·K Fibreglass - -60°C +180°C Shore A 85 Sil-Pad 400 - -60 → +180 °C
RS Stock No. 794-3998
BrandRS PRO
SGD15.84
Each
units
150 x 150mm 0.8mm 150mm 150mm - 13W/m·K Graphite - -50°C +150°C Shore A 80 - Black -50 → +150 °C
RS Stock No. 526-0730
Mfr. Part No.GP2000S40-0.020-02-00-200x100
BrandBergquist
SGD43.95
Each
units
200 x 100mm 0.02in 200mm 100mm - 2W/m·K Gap Pad 2000S40 Yes -60°C +200°C Shore OO 30 Gap Pad 2000S40 - -60 → +200 °C
RS Stock No. 468-2224
Mfr. Part No.SPK6-0.006-00-1212
BrandBergquist
SGD205.44
Each
units
12 x 12in 0.152mm 12in 12in - 1.1W/m·K Thin Film Polyimide - -60°C +180°C Shore A 90 Sil-Pad K6 - -60 → +180 °C
RS Stock No. 794-3985
BrandRS PRO
SGD17.91
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
SGD18.25
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. 707-3355
Mfr. Part No.SPK6-0.006-00-54
BrandBergquist
SGD0.762
Each (In a Pack of 10)
units
19.05 x 12.7mm 0.152mm 19.05mm 12.7mm - 1.1W/m·K Thin Film Polyimide - -60°C +180°C Shore A 90 Sil-Pad K6 - -60 → +180 °C
RS Stock No. 446-475
Mfr. Part No.U021041-26-U1
SGD21.77
Each
units
100 x 100mm 1mm 100mm 100mm - 6W/m·K Boron Nitride Filled Silicone Elastomer - -45°C +200°C Shore OO 70 - - -45 → +200 °C
RS Stock No. 794-3991
BrandRS PRO
SGD17.91
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. 794-3982
BrandRS PRO
SGD15.84
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. 446-576
Mfr. Part No.U021041-20-U1
SGD17.16
Each
units
100 x 100mm 1mm 100mm 100mm - 3W/m·K Boron Nitride Filled Silicone Elastomer Yes -45°C +200°C Shore OO 25 - - -45 → +200 °C
RS Stock No. 712-3923
Mfr. Part No.EYGA121807A
BrandPanasonic
SGD42.69
Each
units
180 x 115mm 0.07mm 180mm 115mm - 1000W/m·K Graphite Yes - - - - - -
RS Stock No. 915-6082
BrandRS PRO
SGD19.87
Each
units
150 x 150mm 0.5mm 150mm 150mm - 2W/m·K Non-Silicone - -40°C +125°C Shore OO 30 - Pink -40 → +125 °C
RS Stock No. 915-6073
BrandRS PRO
SGD58.39
Each
units
150 x 150mm 0.5mm 150mm 150mm - 8W/m·K Silicone - -55°C +200°C Shore OO 60 - Grey -55 → +200 °C
RS Stock No. 752-4881
Mfr. Part No.HF650P-0.001-01-00-54
BrandBergquist
SGD1.381
Each (In a Bag of 50)
units
- 0.001in - - - 1.5W/m·K Hi-Flow 650P Yes -40°C +150°C - Hi-Flow 650P - -40 → +150 °C
RS Stock No. 446-493
Mfr. Part No.U021041-15-U1
SGD9.28
Each
units
100 x 100mm 2mm 100mm 100mm - 1.2W/m·K Ceramic Filled Silicone Rubber Yes -40°C +160°C Shore OO 27 - - -40 → +160 °C
RS Stock No. 794-3995
BrandRS PRO
SGD12.16
Each
units
150 x 150mm 0.8mm 150mm 150mm - 8W/m·K Graphite - -50°C +150°C Shore A 80 - Black -50 → +150 °C
RS Stock No. 915-6058
BrandRS PRO
SGD34.10
Each
units
150 x 150mm 0.5mm 150mm 150mm - 6W/m·K Silicone - -55°C +200°C Shore OO 50 - Red -55 → +200 °C
RS Stock No. 780-5859
Mfr. Part No.ILA-TIM-STRIP-300X20-1A
SGD8.69
Each
units
300 x 20mm 0.25mm 300mm 20mm - 5 W/m·K, 240 W/m·K TIM Yes - - Shore A 85 - - -
RS Stock No. 491-4161
Mfr. Part No.GP3000S30-0.040-02-00-100X100
BrandBergquist
SGD53.18
Each
units
100 x 100mm 0.04in 100mm 100mm - 3W/m·K Gap Pad 3000S30 Yes -60°C +200°C Shore OO 30 Gap Pad 3000S30 - -60 → +200 °C