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. 331-4784
Mfr. Part No.GPVO-0.160-AC-00-200X100
BrandBergquist
$221.08
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. 752-4840
Mfr. Part No.GP2200SF-0.020-02-00-100x100
BrandBergquist
$49.26
Each
units
100 x 100mm 0.02in 100mm 100mm - 2W/m·K Gap Pad 2200SF Yes -60°C +125°C Shore OO 70 Gap Pad 2200SF - -60 → +125 °C
RS Stock No. 752-4853
Mfr. Part No.GP2200SF-0.125-02-00-100x100
BrandBergquist
$119.22
Each
units
100 x 100mm 0.125in 100mm 100mm - 2W/m·K Gap Pad 2200SF Yes -60°C +125°C Shore OO 70 Gap Pad 2200SF - -60 → +125 °C
RS Stock No. 712-3949
Mfr. Part No.EYGA121807SM
BrandPanasonic
$159.52
Each
units
180 x 115mm 0.07mm 180mm 115mm - 1000W/m·K Graphite Yes - - - - - -
RS Stock No. 880-1937
Mfr. Part No.ILA-TIM-PETUNIA-2A
$9.985
Each (In a Pack of 2)
units
- 0.16mm - - - - Graphite Yes -240°C +300°C Shore A 90 TIM Cream -240 → +300 °C
RS Stock No. 712-3914
Mfr. Part No.EYGS121807
BrandPanasonic
$34.33
Each
units
180 x 115mm 0.07mm 180mm 115mm - 1000W/m·K Graphite - - - - - - -
RS Stock No. 712-3973
Mfr. Part No.EYGA121807KV
BrandPanasonic
$83.22
Each
units
180 x 115mm 0.07mm 180mm 115mm - 1000W/m·K Graphite Yes - - - - - -
RS Stock No. 915-6067
BrandRS PRO
$65.50
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. 812-7992
Mfr. Part No.EYG-S182310DP
BrandPanasonic
$139.85
Each
units
230 x 180mm 0.1mm 230mm 180mm - 700W/m·K Graphite - - +400°C - - - Maximum of +400 (Withstand) °C
RS Stock No. 707-4581
BrandRS PRO
$29.18
Each
units
150 x 150mm 1.5mm 150mm 150mm - 1.6W/m·K - Yes -40°C +200°C Shore A 15 - Grey -40 → +200 °C
RS Stock No. 177-7824
Mfr. Part No.GPVO-0.040-00-0816
BrandBergquist
$238.87
Each
units
8 x 16in 0.04in 8in 16in - 0.8W/m·K Gap Pad VO - -60°C +200°C Shore OO 40 Gap Pad VO - -60 → +200 °C
RS Stock No. 491-4105
Mfr. Part No.GP2000S40-0.080-02-00-200X100
BrandBergquist
$126.95
Each
units
200 x 100mm 0.08in 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. 780-5833
Mfr. Part No.ILA-TIM-27FL-180X180-2A
$75.73
Each
units
- 0.16mm - - - - TIM Yes -240°C +300°C Shore A 90 TIM - -240 → +300 °C
RS Stock No. 283-3644
Mfr. Part No.SP400-0.007-AC-122
BrandBergquist
$1.556
Each (In a Pack of 50)
units
28.96 x 20.57mm 0.178mm 28.96mm 20.57mm - 0.9W/m·K Fibreglass Yes -60°C +180°C Shore A 85 Sil-Pad 400 - -60 → +180 °C
RS Stock No. 174-5718
BrandRS PRO
$94.83
Each
units
200 x 200 x 3mm 3mm 200mm 200mm - 3W/m·K Non-Silicone Yes -40°C +125°C 45 Shore OO - Grey -40 → +125 °C
RS Stock No. 722-6710
BrandRS PRO
$39.46
Each
units
150 x 150mm 1mm 150mm 150mm - 2W/m·K Non-Silicone - -40°C +105°C Shore OO 60 - Grey -40 → +105 °C
RS Stock No. 859-7631
Mfr. Part No.ILA-TIM-STAR-1A
$2.025
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. 780-5821
Mfr. Part No.ILA-TIM-27FL-180X180-0A
$23.10
Each
units
- 0.13mm - - - 5 W/m·K, 240 W/m·K TIM - -240°C +300°C Shore A 85 TIM - -240 → +300 °C
RS Stock No. 169-1354
Mfr. Part No.QII-0.006-00-54
BrandBergquist
$1.007
Each (In a Pack of 50)
units
19.05 x 12.7mm 0.152mm 19.05mm 12.7mm - 2.5W/m·K Q-Pad II - -60°C +180°C Shore A 93 Q-Pad II - -60 → +180 °C
RS Stock No. 135-9680
Mfr. Part No.EYGS0509ZLMH
BrandPanasonic
$14.54
Each
units
86 x 51mm 0.2mm 86mm 51mm - 400W/m·K Graphite - -55°C +400°C - - - -55 → +400 °C