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. 707-3355
Mfr. Part No.SPK6-0.006-00-54
BrandBergquist
$0.898
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. 507-5605
Mfr. Part No.SP400-0.007-00-1212
BrandBergquist
$114.79
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. 707-4601
BrandRS PRO
$40.02
Each
units
150 x 150mm 1.5mm 150mm 150mm - 2.2W/m·K - Yes -40°C +200°C Shore A 10 - Red -40 → +200 °C
RS Stock No. 712-3955
Mfr. Part No.EYGA091207V
BrandPanasonic
$41.88
Each
units
115 x 90mm 0.07mm 115mm 90mm - 1000W/m·K Graphite Yes - - - - - -
RS Stock No. 169-2177
Mfr. Part No.SP400-0.007-00-54
BrandBergquist
$0.629
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. 446-493
Mfr. Part No.U021041-15-U1
$14.75
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. 859-7634
Mfr. Part No.ILA-TIM-STAR-2A.
$4.246
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. 283-3672
Mfr. Part No.SP2000-0.015-00-122
BrandBergquist
$3.567
Each (In a Pack of 10)
units
28.96 x 20.57mm 0.015in 28.96mm 20.57mm - 3.5W/m·K Fibreglass - -60°C +200°C Shore A 90 Sil-Pad 2000 - -60 → +200 °C
RS Stock No. 758-0926
BrandRS PRO
$1.279
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. 707-3373
Mfr. Part No.SPK10-0.006-00-104
BrandBergquist
$1.516
Each (In a Pack of 10)
units
25.4 x 19.05mm 0.152mm 25.4mm 19.05mm - 1.3W/m·K Thin Film Polyimide - -60°C +180°C Shore A 90 Sil-Pad K10 - -60 → +180 °C
RS Stock No. 707-3367
Mfr. Part No.SP400-0.007-00-104
BrandBergquist
$0.887
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. 468-2319
Mfr. Part No.SP2000-0.015-00-00-150X150
BrandBergquist
$225.91
Each
units
150 x 150mm 0.015in 150mm 150mm - 3.5W/m·K Fibreglass - -60°C +200°C Shore A 90 Sil-Pad 2000 - -60 → +200 °C
RS Stock No. 707-4764
BrandRS PRO
$86.50
Each
units
150 x 150mm 0.5mm 150mm 150mm - 6W/m·K Gel - -45°C +200°C Shore OO 50 - Red -45 → +200 °C
RS Stock No. 283-3638
Mfr. Part No.SP400-0.007-00-122
BrandBergquist
$0.776
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. 446-481
Mfr. Part No.U021041-24-U1
$89.70
Each
units
100 x 100mm 4mm 100mm 100mm - 3W/m·K Boron Nitride Filled Silicone Elastomer Yes -45°C +200°C Shore OO 25 - - -45 → +200 °C
RS Stock No. 446-576
Mfr. Part No.U021041-20-U1
$22.30
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. 794-3989
BrandRS PRO
$16.40
Each
units
150 x 150mm 0.5mm 150mm 150mm - 8W/m·K Graphite - -50°C +150°C Shore A 80 - Black -50 → +150 °C
RS Stock No. 915-6089
BrandRS PRO
$204.10
Each
units
150 x 150mm 2mm 150mm 150mm - 8W/m·K Silicone - -55°C +200°C Shore OO 60 - Grey -55 → +200 °C
RS Stock No. 446-475
Mfr. Part No.U021041-26-U1
$25.49
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. 915-6076
BrandRS PRO
$108.55
Each
units
150 x 150mm 1mm 150mm 150mm - 8W/m·K Silicone - -55°C +200°C Shore OO 60 - Grey -55 → +200 °C