Heatsinks

Heat sinks are a type of thermal conductor (or heat exchanger) that absorb and dissipate the heat created by electronic and mechanical devices. Heat sinks use convection, conduction or radiation to disperse heat.


What are heat sinks made of?


Heat sinks are made from metal and typically constructed from copper or aluminium. Copper is an excellent thermal conductor, helping to draw heat away from the device that you are trying to cool. Although aluminium doesn’t conduct heat as well as copper, it is less expensive and lighter than copper. The heat will normally rise through a number of metal fins. Fin designs are used as they provide a greater surface area for the heat to spread across and dissipate.


What would you use a heat sink for?


Heat sinks prevent devices from overheating and are particularly important in protecting electronics such as CPUs. Components subject to too much heat can become irreparably damaged. In the most severe cases overheating components can result in fires, explosions and injury.


What devices can you use heat sinks for?


Heat sinks can be used to cool a large number of devices. For example, CPUs, LEDs, ICs and modules.


What is the difference between a heat sink and cooling fan?


Heat sinks are a piece of metal that conducts heat away from components. Fans forcibly move warm air away from components.


Terminology


A wide variety of heat sinks are available. Passive heat sinks refer to those without a fan, while the term ’active heat sinks’ refer to those with an integrated fan. You may also come across the term HSF which means a heat sink with a fan. Some heat sinks can also be combined with a liquid cooling solution to move heat away from devices. Heat sinks are also frequently spelt as ’heatsinks’.


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Description Price For Use With Length Width Height Dimensions Thermal Resistance Mounting Diameter Colour Application Finish Material Package Type Series
RS Stock No. 903-3179
Mfr. Part No.132AB2000B
TWD1,692.00
Each
units
Universal Rectangular Alu 200mm 250mm 30mm 200 x 250 x 30mm 0.14°C/W PCB Mount - - High Power Semiconductor Device, Optoelectronic Device Anodized Aluminium - 100
RS Stock No. 750-0888
Mfr. Part No.BGA STD 010
TWD200.00
1 Bag of 5
Bag(s)
BGA 13mm 13.5mm 10mm 13 x 13.5 x 10mm 27K/W Adhesive Foil - Black - - - BGA -
RS Stock No. 401-964
Mfr. Part No.400051
TWD60.60
Each (In a Pack of 20)
units
- 38mm 28mm 22mm 38 x 28 x 22mm 9.9°C/W Screw - Black - - - TO-220 -
RS Stock No. 920-9439
Mfr. Part No.ILA-HSINK-RADL-70X20MM-BLK
TWD643.00
Each
units
SCOB - - 20mm 70 (Dia.) x 20mm - - 70mm - - - - LED -
RS Stock No. 221-2104
Mfr. Part No.SK409-38,1STC
TWD86.00
Each
units
- 38.1mm 45mm 12.7mm 38.1 x 45 x 12.7mm 7K/W Clip - Black - - - - -
RS Stock No. 168-6245
Mfr. Part No.KL167SW
BrandSeifert
TWD69.00
Each
units
- 30mm 25.4mm 12.7mm 30 x 25.4 x 12.7mm 15K/W Solder - Black - - - TO-220 -
RS Stock No. 176-3936
BrandRS PRO
TWD41,198.00
1 Box of 4000
Box(es)
- 30mm 25.4mm 12.7mm 30 x 25.4 x 12.7mm 7.3 (Forced) °C/W, 14 (Natural) °C/W Vertical - Black - Black Anodized Aluminium TO-220 RSAW294
RS Stock No. 674-4747
Mfr. Part No.ICK BGA 10x10x10
TWD60.00
Each
units
Universal Square Alu 10mm 10mm 10mm 10 x 10 x 10mm 28.5K/W Adhesive Foil, Conductive Foil - Black - - Aluminium BGA -
RS Stock No. 867-0957
Mfr. Part No.SF-10-250-S
BrandSPREADFAST
TWD459.00
Each
units
Heat Pipe 250mm - - 10 x 250mm - - 10mm - - - Copper - SF
RS Stock No. 774-2818
Mfr. Part No.LAM 5 50 05
TWD2,098.00
Each
units
Universal Rectangular Alu with fan 50mm 50mm 50mm 50 x 50 x 50mm 1.38K/W PCB Mount - Natural - - Aluminium - -
RS Stock No. 176-3950
BrandRS PRO
TWD63,140.00
1 Box of 2000
Box(es)
- 38.1mm 34.9mm 12.7mm 38.1 x 34.9 x 12.7mm 5.5 (Forced)°C/W Vertical - Black - Black Anodized Aluminium TO-220 RSAW294
RS Stock No. 189-8454
Mfr. Part No.SK58-75-SA
TWD514.00
Each
units
Universal Rectangular Alu 75mm 150mm 27mm 75 x 150 x 27mm 1.4K/W - - Black - - Aluminium - -
RS Stock No. 169-4268
Mfr. Part No.SK125 84SA
TWD110.00
Each
units
- 84mm 30mm 28mm 84 x 30 x 28mm 8.1K/W - - Black - - - TO-220 -
RS Stock No. 867-0919
Mfr. Part No.SF-04-150-S
BrandSPREADFAST
TWD239.00
Each
units
Heat Pipe 150mm - - 4 x 150mm - - 4mm - - - Copper - SF
RS Stock No. 184-6743
Mfr. Part No.HS-DC-1/1-HFL-12
BrandSPREADFAST
TWD216.00
Each
units
1/1 Brick DC/DC Converter 120mm 62mm 14mm 120 x 62 x 14mm - - - Black DC-DC Converters - Aluminium - HS
RS Stock No. 903-3090
Mfr. Part No.122AB2000B
TWD1,083.00
Each
units
Universal Square Alu 200mm 200mm 15mm 200 x 200 x 15mm 0.23°C/W PCB Mount - - High Power Semiconductor Device, Optoelectronic Device Anodized Aluminium - 100
RS Stock No. 674-4753
Mfr. Part No.ICK BGA 27x27x22
TWD227.00
Each
units
Universal Square Alu 27mm 27mm 22mm 27 x 27 x 22mm 13.5K/W Adhesive Foil, Conductive Foil - Black - - Aluminium BGA -
RS Stock No. 234-2407
Mfr. Part No.PPC0350BP
TWD78.00
Each
units
- 35mm 16mm 27mm 35 x 16 x 27mm 9°C/W Clip - Black - - - - -
RS Stock No. 203-599
Mfr. Part No.SK 481/ 37,5/ SA
TWD108.00
Each (In a Pack of 10)
units
- 37.5mm 30mm 45mm 37.5 x 30 x 45mm 5K/W Clip - Black - - - - -
RS Stock No. 189-8195
Mfr. Part No.SK85-75-SA
TWD523.00
Each
units
Universal Rectangular Alu 75mm 160mm 40mm 75 x 160 x 40mm 1.1K/W - - Black - - Aluminium - -