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. 712-4011
Mfr. Part No.EYGA091203V
BrandPanasonic
PHP1,875.68
Each
units
115 x 90mm 0.025mm 115mm 90mm - 1600W/m·K Graphite Yes - - - - - -
RS Stock No. 283-3638
Mfr. Part No.SP400-0.007-00-122
BrandBergquist
PHP24.834
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. 707-3367
Mfr. Part No.SP400-0.007-00-104
BrandBergquist
PHP16.429
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. 707-4578
BrandRS PRO
PHP985.83
Each
units
150 x 150mm 1mm 150mm 150mm - 1.6W/m·K - Yes -40°C +200°C Shore A 15 - Grey -40 → +200 °C
RS Stock No. 329-3328
Mfr. Part No.HF105-0.0055-AC-1212
BrandBergquist
PHP3,148.10
Each
units
300 x 300mm 0.139mm 300mm 300mm - 0.9W/m·K Hi-Flow 105 Yes -30°C +130°C - Hi-Flow 105 - -30 → +130 °C
RS Stock No. 362-9654
Mfr. Part No.HF625-0.005-AC-54
BrandBergquist
PHP51.372
Each (In a Pack of 50)
units
19.05 x 12.7mm 0.127mm - - - 0.5W/m·K Hi-Flow 625 Yes -30°C +150°C - Hi-Flow 625 - -30 → +150 °C
RS Stock No. 794-3973
BrandRS PRO
PHP672.94
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. 758-0963
BrandRS PRO
PHP262.008
Each (In a Pack of 5)
units
65.2 x 47.5mm 0.2mm 65.2mm 47.5mm - 1.8W/m·K - - -45°C +200°C - - Red -45 → +200 °C
RS Stock No. 794-3995
BrandRS PRO
PHP428.10
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. 446-576
Mfr. Part No.U021041-20-U1
PHP731.91
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. 909-2033
BrandRS PRO
PHP22.907
Each (In a Pack of 10)
units
16 x 16.5mm 0.127mm 16mm 16.5mm - 2.5W/m·K - No -45°C +125°C - - Grey -45 → +125 °C
RS Stock No. 707-3361
Mfr. Part No.SPK10-0.006-00-54
BrandBergquist
PHP28.719
Each (In a Pack of 10)
units
19.05 x 12.7mm 0.152mm 19.05mm 12.7mm - 1.3W/m·K Thin Film Polyimide - -60°C +180°C Shore A 90 Sil-Pad K10 - -60 → +180 °C
RS Stock No. 758-0941
BrandRS PRO
PHP69.208
Each (In a Pack of 10)
units
28 x 27.3mm 0.2mm 28mm 27.3mm - 1.8W/m·K - - -45°C +200°C - - Red -45 → +200 °C
RS Stock No. 446-475
Mfr. Part No.U021041-26-U1
PHP818.44
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. 468-2224
Mfr. Part No.SPK6-0.006-00-1212
BrandBergquist
PHP7,515.60
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. 859-7634
Mfr. Part No.ILA-TIM-STAR-2A.
PHP137.44
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. 329-3334
Mfr. Part No.HF625-0.005-AC-1212
BrandBergquist
PHP6,473.12
Each
units
300 x 300mm 0.127mm 300mm 300mm - 0.5W/m·K Hi-Flow 625 Yes -30°C +150°C - Hi-Flow 625 - -30 → +150 °C
RS Stock No. 794-3989
BrandRS PRO
PHP561.82
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. 707-4597
BrandRS PRO
PHP1,648.69
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. 780-5846
Mfr. Part No.ILA-TIM-17FL-215X194-1A
PHP1,667.47
Each
units
- 0.13mm - - - 5 W/m·K, 240 W/m·K TIM Yes -240°C +300°C Shore A 85 TIM - -240 → +300 °C