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. 127-013
Mfr. Part No.HF300P-0.0015-00-1112
BrandBergquist
$147.01
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. 169-2234
Mfr. Part No.SP400-0.007-00-53
BrandBergquist
$0.974
Each (In a Pack of 50)
units
21.97 x 16.51mm 0.178mm 21.97mm 16.51mm - 0.9W/m·K Fibreglass - -60°C +180°C Shore A 85 Sil-Pad 400 - -60 → +180 °C
RS Stock No. 882-0228
Mfr. Part No.GCS-017-P10A10
$93.09
Each
units
225 x 225mm 0.017mm 225mm 225mm - 1750W/m·K Graphite Yes - - - - - -
RS Stock No. 752-4752
Mfr. Part No.GP2500S20-0.125-02-00-100x100
BrandBergquist
$111.44
Each
units
100 x 100mm 0.125in 100mm 100mm - 2.4W/m·K Gap Pad 2500S20 Yes -60°C +200°C Shore OO 20 Gap Pad 2500S20 - -60 → +200 °C
RS Stock No. 169-4640
Mfr. Part No.SPK10-0.006-AC-50
BrandBergquist
$2.482
Each (In a Pack of 10)
units
11.1 x 7.92mm 0.152mm 11.1mm 7.92mm - 1.3W/m·K Thin Film Polyimide Yes -60°C +180°C Shore A 90 Sil-Pad K10 - -60 → +180 °C
RS Stock No. 169-2240
Mfr. Part No.SP400-0.007-00-20
BrandBergquist
$0.617
Each (In a Pack of 50)
units
- 0.178mm - - 12.95mm 0.9W/m·K Fibreglass - -60°C +180°C Shore A 85 Sil-Pad 400 - -60 → +180 °C
RS Stock No. 707-3367
Mfr. Part No.SP400-0.007-00-104
BrandBergquist
$0.826
Each (In a Pack of 10)
units
25.4 x 19.05mm 0.178mm 25.4mm 19.05mm - 0.9W/m·K Fibreglass - -60°C +180°C Shore A 85 Sil-Pad 400 - -60 → +180 °C
RS Stock No. 794-3985
BrandRS PRO
$21.12
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. 169-2177
Mfr. Part No.SP400-0.007-00-54
BrandBergquist
$0.588
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. 367-3140
Mfr. Part No.GPVOUS-0.125-00-0816
BrandBergquist
$395.75
Each
units
406 x 203 mm, 408 x 203 mm 0.125in 406 mm, 408 mm 203 mm, 205 mm - 1W/m·K Gap Pad VO Ultra Soft - -60°C +200°C Shore OO 5 Gap Pad VO Ultra Soft - -60 → +200 °C
RS Stock No. 468-2274
Mfr. Part No.GPVOUS-0.040-00-00-100X100
BrandBergquist
$44.78
Each
units
100 x 100mm 0.04in 100mm 100mm - 1W/m·K Gap Pad VO Ultra Soft - -60°C +200°C Shore OO 5 Gap Pad VO Ultra Soft - -60 → +200 °C
RS Stock No. 909-2070
BrandRS PRO
$21.49
Each
units
150 x 150mm 0.06mm 150mm 150mm - 2.5W/m·K - No -45°C +125°C - - Grey -45 → +125 °C
RS Stock No. 169-2313
Mfr. Part No.SP400-0.007-AC-53
BrandBergquist
$1.07
Each (In a Pack of 50)
units
21.97 x 16.51mm 0.178mm 21.97mm 16.51mm - 0.9W/m·K Fibreglass Yes -60°C +180°C Shore A 85 Sil-Pad 400 - -60 → +180 °C
RS Stock No. 169-2206
Mfr. Part No.SP400-0.007-00-50
BrandBergquist
$0.459
Each (In a Pack of 50)
units
11.1 x 7.92mm 0.178mm 11.1mm 7.92mm - 0.9W/m·K Fibreglass - -60°C +180°C Shore A 85 Sil-Pad 400 - -60 → +180 °C
RS Stock No. 491-4161
Mfr. Part No.GP3000S30-0.040-02-00-100X100
BrandBergquist
$67.30
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
RS Stock No. 177-7818
Mfr. Part No.SL-012-AL40
BrandSilfox
$3.419
Each (In a Pack of 10)
units
23 x 20mm 4mm 23mm 20mm - 20W/m·K Ceramic Aluminium Oxide - - +1400°C - - - Maximum of +1400 °C
RS Stock No. 127-079
Mfr. Part No.GP1500-0.100-02-0804
BrandBergquist
$132.36
Each
units
8 x 4in 0.1in 8in 4in - 1.5W/m·K Gap Pad 1500 Yes -60°C +200°C Shore OO 40 Gap Pad 1500 - -60 → +200 °C
RS Stock No. 707-4685
BrandRS PRO
$78.06
Each
units
150 x 150mm 2mm 150mm 150mm - 4W/m·K - Yes -40°C +200°C Shore A 25 - Grey -40 → +200 °C
RS Stock No. 915-6082
BrandRS PRO
$20.06
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. 712-3914
Mfr. Part No.EYGS121807
BrandPanasonic
$31.96
Each
units
180 x 115mm 0.07mm 180mm 115mm - 1000W/m·K Graphite - - - - - - -