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. 859-7634
Mfr. Part No.ILA-TIM-STAR-2A.
PHP137.798
Each (In a Pack of 8)
units
- 0.125mm - - - - Graphite Yes -240°C +300°C Shore A 90 TIM - -240 → +300 °C
RS Stock No. 707-4597
BrandRS PRO
PHP1,652.97
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. 752-4893
Mfr. Part No.HF650P-0.001-01-00-122
BrandBergquist
PHP171.672
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
PHP368.37
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. 122-5192
Mfr. Part No.ILA-TIM-LES33-2A
PHP215.50
Each (In a Pack of 2)
units
38 x 38mm - 38mm 38mm - - Graphite Yes - - - TIM Grey -
RS Stock No. 331-4784
Mfr. Part No.GPVO-0.160-AC-00-200X100
BrandBergquist
PHP7,282.31
Each
units
200 x 100mm 0.16in 200mm 100mm - 0.8W/m·K Gap Pad VO Yes -60°C +200°C Shore OO 40 Gap Pad VO - -60 → +200 °C
RS Stock No. 491-0096
Mfr. Part No.GP2500-0.040-02-00-100X100
BrandBergquist
PHP3,464.61
Each
units
100 x 100mm 0.04in 100mm 100mm - 2.7W/m·K Gap Pad 2500 Yes -60°C +200°C Shore OO 80 Gap Pad 2500 - -60 → +200 °C
RS Stock No. 707-3355
Mfr. Part No.SPK6-0.006-00-54
BrandBergquist
PHP27.97
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. 707-3421
Mfr. Part No.GP5000S35-0.020-02-0404
BrandBergquist
PHP2,367.23
Each
units
4 x 4in 0.02in 4in 4in - 5W/m·K Gap Pad 5000S35 Yes -60°C +200°C Shore OO 35 Gap Pad 5000S35 - -60 → +200 °C
RS Stock No. 859-7631
Mfr. Part No.ILA-TIM-STAR-1A
PHP89.285
Each (In a Pack of 8)
units
- 0.25mm - - - 5 W/m·K, 240 W/m·K Graphite Yes -240°C +300°C Shore A 85 TIM - -240 → +300 °C
RS Stock No. 915-6051
BrandRS PRO
PHP2,357.26
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. 507-5605
Mfr. Part No.SP400-0.007-00-1212
BrandBergquist
PHP961.73
Each
units
12 x 12in 0.178mm 12in 12in - 0.9W/m·K Fibreglass - -60°C +180°C Shore A 85 Sil-Pad 400 - -60 → +180 °C
RS Stock No. 169-2177
Mfr. Part No.SP400-0.007-00-54
BrandBergquist
PHP27.594
Each (In a Pack of 50)
units
19.05 x 12.7mm 0.178mm 19.05mm 12.7mm - 0.9W/m·K Fibreglass - -60°C +180°C Shore A 85 Sil-Pad 400 - -60 → +180 °C
RS Stock No. 758-0982
BrandRS PRO
PHP740.002
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. 707-4720
BrandRS PRO
PHP606.25
Each
units
150 x 150mm 0.45mm 150mm 150mm - 1.4W/m·K - - -40°C +200°C Shore A 80 - Yellow -40 → +200 °C
RS Stock No. 794-3979
BrandRS PRO
PHP585.72
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. 909-2083
BrandRS PRO
PHP1,534.21
Each
units
150 x 150mm 0.12mm 150mm 150mm - 4W/m·K - Yes -45°C +125°C - - Grey -45 → +125 °C
RS Stock No. 758-0926
BrandRS PRO
PHP43.598
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. 127-013
Mfr. Part No.HF300P-0.0015-00-1112
BrandBergquist
PHP5,381.75
Each
units
11 x 12in 0.002in 11in 12in - 1.6W/m·K Hi-Flow 300P - - +150°C - Hi-Flow 300P - Maximum of +150 °C
RS Stock No. 780-5852
Mfr. Part No.ILA-TIM-CLUSTER-30X30-2A
PHP234.36
Each
units
- 0.16mm - - - - TIM Yes -240°C +300°C Shore A 90 TIM - -240 → +300 °C