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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รายละเอียดสินค้า / Description ราคา / Price For Use With Length Width Height Dimensions Thermal Resistance Mounting Diameter Colour Application Finish Material Package Type Series
RS Stock No. 263-251
Brand :RS PRO
THB42.045
Each: (In a Pack of 10)
Units
TO-220 20mm 35mm 20mm 20 x 35 x 20mm 17.9°C/W - - - - - Aluminium TO-220 -
RS Stock No. 176-3950
Brand :RS PRO
THB75,940.00
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. 176-4179
Brand :RS PRO
THB179.36
Each
Units
1/4 Brick DC/DC Converter 57.9mm 36.8mm 11.5mm 57.9 x 36.8 x 11.5mm 2.3 (Forced)°C/W Horizontal, Screw, Vertical - Black - Black Anodized Aluminium - RSAW294
RS Stock No. 176-4197
Brand :RS PRO
THB117.48
Each
Units
1/2 Brick DC/DC Converter 57.9mm 61mm 6.1mm 57.9 x 61 x 6.1mm 4.2 (Forced)°C/W Horizontal - Black - Black Anodized Aluminium - RSAW294
RS Stock No. 176-4176
Brand :RS PRO
THB29.84
Each: (In a Pack of 10)
Units
- 25.4mm 34.9mm 12.7mm 25.4 x 34.9 x 12.7mm 5.8 (Forced)°C/W Vertical - Black - Black Anodized Aluminium TO-220 RSAW294
RS Stock No. 176-4153
Brand :RS PRO
THB8.12
Each: (In a Pack of 100)
Units
- 19.1mm 13.2mm 12.7mm 19.1 x 13.2 x 12.7mm 25 (Natural) °C/W, 7 (Forced) °C/W Horizontal, Mounting Hole, Vertical - Black - Black Anodized Aluminium TO-220 RSAW294
RS Stock No. 176-3945
Brand :RS PRO
THB23,118.80
1 Box of 1000
Box(es)
- 25.4mm 41.9mm 38.1mm 25.4 x 41.9 x 38.1mm 3.3 (Forced) °C/W, 6.3 (Natural) °C/W Vertical - Black - Black Anodized Aluminium TO-218, TO-220, TO-247 RSAW294
RS Stock No. 176-4154
Brand :RS PRO
THB13.62
Each: (In a Pack of 10)
Units
Surface Mount Heat Sink 12.7mm 26.2mm 10.2mm 12.7 x 26.2 x 10.2mm 31 (Natural) °C/W, 5 (Forced) °C/W Surface Mount - Black - Tin Plated Copper SMD RSAW294
RS Stock No. 176-4189
Brand :RS PRO
THB34.902
Each: (In a Pack of 5)
Units
- 25.4mm 41.9mm 25.4mm 25.4 x 41.9 x 25.4mm 3.1 (Forced) °C/W, 8.7 (Natural) °C/W Vertical - Black - Black Anodized Aluminium TO-218, TO-220, TO-247 RSAW294
RS Stock No. 176-4168
Brand :RS PRO
THB13.80
Each: (In a Pack of 20)
Units
- 19.1mm 14.5mm 12.7mm 19.1 x 14.5 x 12.7mm 28.5 (Natural) °C/W, 7.5 (Forced) °C/W Bolt On, Horizontal, Vertical - Black - Black Anodized Aluminium TO-220 RSAW294
RS Stock No. 176-4151
Brand :RS PRO
THB153.13
Each
Units
Universal Square Alu 43.2mm 44.5mm 16.5mm 43.2 x 44.5 x 16.5mm 2 (Forced)°C/W Horizontal, Top Mount, Vertical - Black - Black Anodized Aluminium ASIC, BGA, CPU, LGA RSAW294
RS Stock No. 176-3940
Brand :RS PRO
THB10,805.17
1 Box of 1000
Box(es)
Surface Mount Heat Sink 12.7mm 26.2mm 10.2mm 12.7 x 26.2 x 10.2mm 31 (Natural) °C/W, 5 (Forced) °C/W Surface Mount - Black - Tin Plated Copper SMD RSAW294
RS Stock No. 176-3939
Brand :RS PRO
THB7,610.00
1 Box of 1000
Box(es)
- 19.1mm 13.2mm 12.7mm 19.1 x 13.2 x 12.7mm 25 (Natural) °C/W, 7 (Forced) °C/W Horizontal, Mounting Hole, Vertical - Black - Black Anodized Aluminium TO-220 RSAW294
RS Stock No. 176-4162
Brand :RS PRO
THB64.06
Each: (In a Pack of 5)
Units
- 46.4mm 46.4mm 33.3mm 46.4 x 46.4 x 33.3mm 2 (Forced) °C/W, 2 (Natural) °C/W Bolt On, Horizontal, Vertical - Black - Black Anodized Aluminium TO-3 RSAW294
RS Stock No. 176-4194
Brand :RS PRO
THB126.40
Each
Units
1/2 Brick DC/DC Converter 61mm 57.9mm 11.4mm 61 x 57.9 x 11.4mm 2.1 (Forced)°C/W Vertical - Black - Black Anodized Aluminium - RSAW294
RS Stock No. 176-3943
Brand :RS PRO
THB25,132.87
1 Box of 3000
Box(es)
- 15.2mm 13.6mm 12.7mm 15.2 x 13.6 x 12.7mm 11 (Forced) °C/W, 29 (Natural) °C/W Bolt On, Horizontal, Vertical - Black - Black Anodized Aluminium TO-220 RSAW294
RS Stock No. 176-4150
Brand :RS PRO
THB14.392
Each: (In a Pack of 10)
Units
- 30mm 25.4mm 12.7mm 30 x 25.4 x 12.7mm 14 (Natural) °C/W, 7.3 (Forced) °C/W Vertical - Black - Black Anodized Aluminium TO-220 RSAW294
RS Stock No. 176-3942
Brand :RS PRO
THB52.89
Each (In a Box of 500)
Units
- 46.4mm 46.4mm 33.3mm 46.4 x 46.4 x 33.3mm 2 (Forced) °C/W, 2 (Natural) °C/W Bolt On, Horizontal, Vertical - Black - Black Anodized Aluminium TO-3 RSAW294
RS Stock No. 176-3936
Brand :RS PRO
THB43,375.67
1 Box of 4000
Box(es)
- 30mm 25.4mm 12.7mm 30 x 25.4 x 12.7mm 14 (Natural) °C/W, 7.3 (Forced) °C/W Vertical - Black - Black Anodized Aluminium TO-220 RSAW294
RS Stock No. 263-245
Brand :RS PRO
THB21.13
Each: (In a Pack of 10)
Units
- 25.4mm 20.3mm 6.81mm 25.4 x 20.3 x 6.81mm 24°C/W Clip - - - - - TO-220 -
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Description:
From Fischer Elektronik, the SK 42 standard extrusion heatsink is made from anodised aluminium in a grilled shape. Extruded heatsinks are the most common form of heatsink and are suitable for a range of medium power applications.