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. 367-3178
Mfr. Part No.GPVOUS-0.020-AC-00-200X100
BrandBergquist
$96.80
Each
units
200 x 100mm 0.02in 200mm 100mm - 1W/m·K Gap Pad VO Ultra Soft Yes -60°C +200°C Shore OO 5 Gap Pad VO Ultra Soft - -60 → +200 °C
RS Stock No. 712-4015
Mfr. Part No.EYGA121803V
BrandPanasonic
$58.00
Each
units
180 x 115mm 0.025mm 180mm 115mm - 1600W/m·K Graphite Yes - - - - - -
RS Stock No. 177-7802
Mfr. Part No.SL-011-AL30
BrandSilfox
$5.355
Each (In a Pack of 10)
units
40 x 26.2mm 3mm 40mm 26.2mm - 20W/m·K Ceramic Aluminium Oxide - - +1400°C - - - Maximum of +1400 °C
RS Stock No. 169-2183
Mfr. Part No.SP400-0.007-00-05
BrandBergquist
$0.69
Each (In a Pack of 50)
units
41.91 x 28.96mm 0.178mm 41.91mm 28.96mm - 0.9W/m·K Fibreglass - -60°C +180°C Shore A 85 Sil-Pad 400 - -60 → +180 °C
RS Stock No. 909-2033
BrandRS PRO
$0.703
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. 169-2307
Mfr. Part No.SP400-0.007-AC-104
BrandBergquist
$1.357
Each (In a Pack of 50)
units
25.4 x 19.05mm 0.178mm 25.4mm 19.05mm - 0.9W/m·K Fibreglass Yes -60°C +180°C Shore A 85 Sil-Pad 400 - -60 → +180 °C
RS Stock No. 707-4685
BrandRS PRO
$83.84
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. 712-3999
Mfr. Part No.EYGA091203PM
BrandPanasonic
$49.26
Each
units
115 x 90mm 0.025mm 115mm 90mm - 1600W/m·K Graphite Yes - - - - - -
RS Stock No. 169-2341
Mfr. Part No.SP2000-0.015-00-054
BrandBergquist
$1.619
Each (In a Pack of 10)
units
19.05 x 12.7mm 0.015in 19.05mm 12.7mm - 3.5W/m·K Fibreglass - -60°C +200°C Shore A 90 Sil-Pad 2000 - -60 → +200 °C
RS Stock No. 446-471
Mfr. Part No.U021041-25-U1
$106.95
Each
units
100 x 100mm 5mm 100mm 100mm - 3W/m·K Boron Nitride Filled Silicone Elastomer Yes -45°C +200°C Shore OO 25 - - -45 → +200 °C
RS Stock No. 707-4578
BrandRS PRO
$29.60
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. 127-013
Mfr. Part No.HF300P-0.0015-00-1112
BrandBergquist
$158.89
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. 707-3364
Mfr. Part No.SPK6-0.006-00-104
BrandBergquist
$0.873
Each (In a Pack of 10)
units
25.4 x 19.05mm 0.152mm 25.4mm 19.05mm - 1.1W/m·K Thin Film Polyimide - -60°C +180°C Shore A 90 Sil-Pad K6 - -60 → +180 °C
RS Stock No. 758-0948
BrandRS PRO
$4.18
Each (In a Pack of 10)
units
49.1 x 29.7mm 0.2mm 49.1mm 29.7mm - 1.8W/m·K - - -45°C +200°C - - Red -45 → +200 °C
RS Stock No. 882-0219
Mfr. Part No.GCS-017-A10
$97.26
Each
units
225 x 225mm 0.017mm 225mm 225mm - 1750W/m·K Graphite Yes - - - - - -
RS Stock No. 491-0175
Mfr. Part No.GP2500-0.125-02-00-200X100
BrandBergquist
$232.22
Each
units
200 x 100mm 0.125in 200mm 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. 491-0125
Mfr. Part No.GP2500-0.080-02-00-100X100
BrandBergquist
$102.13
Each
units
100 x 100mm 0.08in 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. 752-4792
Mfr. Part No.GP2500S20-0.200-02-00-200x100
BrandBergquist
$314.01
Each
units
200 x 100mm 0.2in 200mm 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. 712-3927
Mfr. Part No.EYGA091207PA
BrandPanasonic
$49.09
Each
units
115 x 90mm 0.07mm 115mm 90mm - 1000W/m·K Graphite Yes - - - - - -
RS Stock No. 707-4566
BrandRS PRO
$27.91
Each
units
150 x 150mm 0.5mm 150mm 150mm - 1.6W/m·K - Yes -40°C +200°C Shore A 15 - Grey -40 → +200 °C