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. 859-7622
Mfr. Part No.ILA-TIM-STAR-0A
SGD1.675
Each (In a Pack of 8)
units
- 0.25mm - - - 240 W/m·K, 5 W/m·K Graphite No -240°C +300°C Shore A 85 TIM - -240 → +300 °C
RS Stock No. 780-5859
Mfr. Part No.ILA-TIM-STRIP-300X20-1A
SGD8.52
Each
units
300 x 20mm 0.25mm 300mm 20mm - 240 W/m·K, 5 W/m·K TIM Yes - - Shore A 85 - - -
RS Stock No. 859-7631
Mfr. Part No.ILA-TIM-STAR-1A
SGD2.306
Each (In a Pack of 8)
units
- 0.25mm - - - 240 W/m·K, 5 W/m·K Graphite Yes -240°C +300°C Shore A 85 TIM - -240 → +300 °C
RS Stock No. 880-1937
Mfr. Part No.ILA-TIM-PETUNIA-2A
SGD8.765
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. 780-5868
Mfr. Part No.ILA-TIM-STRIP-300X20-2A
SGD8.42
Each
units
300 x 20mm 0.16mm 300mm 20mm - - TIM Yes - - Shore A 90 - - -
RS Stock No. 859-7634
Mfr. Part No.ILA-TIM-STAR-2A.
SGD3.55
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. 780-5830
Mfr. Part No.ILA-TIM-27FL-180X180-1A
SGD39.57
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
RS Stock No. 122-5188
Mfr. Part No.ILA-TIM-LES19-2A
SGD3.998
Each (In a Pack of 4)
units
24 x 24mm 0.16mm 24mm 24mm - - Graphite Yes - - - TIM Grey -
RS Stock No. 780-5827
Mfr. Part No.ILA-TIM-72FL-235X170-2A
SGD80.95
Each
units
- 0.16mm - - - - TIM Yes -240°C +300°C Shore A 90 TIM - -240 → +300 °C
RS Stock No. 880-1946
Mfr. Part No.ILA-TIM-ANNA-1A
SGD2.613
Each (In a Pack of 4)
units
- 0.13mm - - - 240 (XY-axis) W/m·K, 5 (Z-axis) W/m·K Graphite Yes -240°C +300°C Shore A 85 TIM Pewter -240 → +300 °C
RS Stock No. 122-5190
Mfr. Part No.ILA-TIM-LES23-2A
SGD5.29
Each (In a Pack of 2)
units
28 x 28mm - 28mm 28mm - - Graphite Yes - - - TIM Grey -
RS Stock No. 906-2741
Mfr. Part No.ILA-TIM-CLUSTER-25X25-1A
SGD2.87
Each (In a Pack of 4)
units
25 x 25mm 0.25mm 25mm 25mm - 5 W/mK, 240 W/mK Graphite Yes -240°C +300°C Shore A 85 - Pewter -
RS Stock No. 906-2748
Mfr. Part No.ILA-TIM-CLUSTER-25X25-0A
SGD2.745
Each (In a Pack of 4)
units
25 x 25mm 0.25mm 25mm 25mm - 5 W/mK, 240 W/mK Graphite - -240°C +300°C Shore A 85 - Pewter -
RS Stock No. 162-4120
Mfr. Part No.ILH-GD01-PCB VER A
SGD1.911
Each (In a Bag of 10)
units
20 x 20 x 1.6mm 1.6mm 20mm 20mm 20mm - Metal - - - - - - -
RS Stock No. 780-5821
Mfr. Part No.ILA-TIM-27FL-180X180-0A
SGD20.49
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. 780-5871
Mfr. Part No.ILA-TIM-SQUARE-300X300-2A
SGD66.68
Each
units
- 0.16mm - - - - TIM Yes -240°C +300°C Shore A 90 TIM - -240 → +300 °C
RS Stock No. 880-1949
Mfr. Part No.ILA-TIM-STRIP-0150X20-1A.
SGD3.328
Each (In a Pack of 4)
units
- 0.25mm - - - 240 (XY-axis) W/m·K, 5 (Z-axis) W/m·K Graphite Yes -240°C +300°C Shore A 85 TIM Pewter -240 → +300 °C
RS Stock No. 162-4121
Mfr. Part No.ILH-X3535-PCB VER A
SGD2.458
Each (In a Bag of 10)
units
20 x 20 x 1.6mm 1.6mm 20mm 20mm 20mm - Metal - - - - - - -
RS Stock No. 122-5182
Mfr. Part No.ILA-TIM-HIGHBAY-65X50-2A
SGD7.16
Each (In a Pack of 2)
units
65 x 50mm 0.16mm 65mm 50mm - - Graphite Yes -20°C +155°C 90 (Shore A) TIM Grey -20 → +155 °C
RS Stock No. 122-5191
Mfr. Part No.ILA-TIM-LES33-1A
SGD3.58
Each (In a Pack of 4)
units
38 x 38mm 0.25mm 38mm 38mm - - Graphite Yes - - - TIM Pewter -