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 doesnt 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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RS-artikelnummer 780-5899
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RS-artikelnummer 712-4285
Tillv. art.nrPF758G
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Universal Rectangular Alu 1m 100mm 15mm - - - - - - - - - -
RS-artikelnummer 268-105
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RS-artikelnummer 189-8561
Tillv. art.nrSK08-75-SA
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RS-artikelnummer 189-8498
Tillv. art.nrSK68-37,5-SA
VarumärkeFischer Elektronik
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- 37.5mm 46mm 33mm 37.5 x 46 x 33mm 5.5K/W Screw - Black - - - TO-220 -
RS-artikelnummer 903-3163
Tillv. art.nr153AB2000B
VarumärkeABL Components
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Universal Rectangular Alu 200mm 66mm 40mm 200 x 66 x 40mm 0.4°C/W PCB Mount - - High Power Semiconductor Device, Optoelectronic Device Anodized Aluminium - 100
RS-artikelnummer 221-2126
Tillv. art.nrSK0937,5TO220
VarumärkeFischer Elektronik
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RS-artikelnummer 692-0597
Tillv. art.nrLA 17 150 24 V
VarumärkeFischer Elektronik
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Universal Rectangular Alu with fan 150mm 122mm 120mm 150 x 122 x 120mm 0.075K/W - - - - - - - -
RS-artikelnummer 189-8690
Tillv. art.nrSK47-150-SA
VarumärkeFischer Elektronik
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Universal Rectangular Alu 150mm 200mm 40mm 150 x 200 x 40mm 0.53K/W - - Black - - - - -
RS-artikelnummer 780-5925
Tillv. art.nrILA-HSINK-STAR-50X40MM-SVR-K
175,62 kr
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Dragon 1, Duris 1, Duris 4, Oslon 1, Oslon 4, Stanley 1, Stanley 4 - - 40mm 50 (Dia.) x 40mm - Screw 50mm Silver - - - LED -
RS-artikelnummer 674-4781
Tillv. art.nrICK S 10x10x12,5
VarumärkeFischer Elektronik
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Universal Square Alu 10mm 10mm 12.5mm 10 x 10 x 12.5mm 26.3K/W Adhesive Foil, Conductive Foil - - - - - - -
RS-artikelnummer 903-3166
Tillv. art.nr153AB1000B
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Universal Rectangular Alu 100mm 66mm 40mm 100 x 66 x 40mm 0.69°C/W PCB Mount - - High Power Semiconductor Device, Optoelectronic Device Anodized Aluminium - 100
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Universal Rectangular Alu 13mm 6.3mm 4.8mm 13 x 6.3 x 4.8mm 63K/W Conductive Adhesive, Conductive Foil - Black - - - DIL-IC -
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Tillv. art.nrSK68-50-SA
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Tillv. art.nrS586/B/250
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