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. 402-709
Mfr. Part No.P35/250A
BrandSemikron
kr 765,29
Each
Units
SEMIPACK, SEMIPONT, SEMITRANS, Universal Rectangular Alu 250mm 200mm 40mm 250 x 200 x 40mm 0.41K/W - - Black - - - - -
RS Stock No. 712-4241
Mfr. Part No.5900PBG
kr 6,992
Each (In a Pack of 5)
Units
- 12.5mm 30.4mm 31.2mm 12.5 x 30.4 x 31.2mm 13°C/W PCB Through Hole - Black - - - TO-220 -
RS Stock No. 234-2457
Mfr. Part No.159AB1500B
kr 429,52
Each
Units
Universal Rectangular Alu 150mm 160mm 40mm 150 x 160 x 40mm 0.65K/W - - Black - - - - -
RS Stock No. 712-4314
Mfr. Part No.577500B00000G
kr 4,334
Each (In a Pack of 5)
Units
- 8.13mm 19.81mm 13.21mm 8.13 x 19.81 x 13.21mm 26°C/W Slip-On - Black - Black Anodized - TO-126 -
RS Stock No. 880-1943
Mfr. Part No.ILA-EXTRUSION-01-0150.
kr 25,036
Each (In a Pack of 5)
Units
Duris P5 150mm 24mm 18.9mm - - - - - - - - LED -
RS Stock No. 698-8098
Mfr. Part No.ICK BGA 14x14
kr 18,05
Each
Units
Universal Square Alu 14mm 14mm 6mm 14 x 14 x 6mm 29K/W Adhesive Foil, Conductive Foil - Black - - - BGA -
RS Stock No. 712-4305
Mfr. Part No.507222B00000G
kr 4,46
Each (In a Pack of 5)
Units
- 37.34mm 44.45mm 9.52mm 44.45 x 9.52 x 37.34mm 9.6°C/W - - Black - Black Anodized - TO-220 -
RS Stock No. 780-5896
Mfr. Part No.ILA-HSINK-250X200X15MM-BLK-K
kr 1 136,09
Each
Units
Oslon 17 250mm 200mm 15mm 250 x 15 x 200mm - Screw - Black - - - LED -
RS Stock No. 712-4279
Mfr. Part No.6396BG
kr 56,756
Each (In a Pack of 5)
Units
- 25.4mm 41.91mm 25.4mm 25.4 x 41.91 x 25.4mm 5.6°C/W - - Black - - - TO-218, TO-220, TO-247 -
RS Stock No. 490-7236
Mfr. Part No.S117/B/50
kr 79,38
Each
Units
Universal Rectangular Alu 50mm 97mm 25mm 50 x 97 x 25mm 2.3K/W - - Black - - - - -
RS Stock No. 692-0660
Mfr. Part No.LA 7 100 24 V
kr 1 560,80
Each
Units
Universal Rectangular Alu with fan 100mm 125mm 74mm 100 x 125 x 74mm 0.12K/W - - - - - - - -
RS Stock No. 221-2097
Mfr. Part No.SK409-25,4STC
kr 19,94
Each
Units
- 25.4mm 45mm 12.7mm 25.4 x 45 x 12.7mm 8.2K/W Clip - Black - - - - -
RS Stock No. 133-6335
Mfr. Part No.P16/300B CMT
BrandSemikron
kr 1 429,60
Each
Units
SEMIPACK, SEMIPONT, SEMITRANS, SEMiX, SKiM, SKiP 300mm 77mm 77mm 300 x 77 x 77mm 0.036K/W Clip - - Isolated Power Module - Aluminium - P 16
RS Stock No. 774-2830
Mfr. Part No.LAM 5 100 05
kr 526,22
Each
Units
Universal Rectangular Alu with fan 100mm 50mm 50mm 100 x 50 x 50mm 0.92K/W PCB Mount - Natural - - - - -
RS Stock No. 403-190
Mfr. Part No.SW63-4
kr 13,891
Each (In a Pack of 10)
Units
- 12.5mm 34.5mm 63mm 12.5 x 34.5 x 63mm 7K/W Solder - Black - - - TO-218, TO-220, TO-247 -
RS Stock No. 169-9780
Mfr. Part No.WA208 14
BrandSeifert
kr 106,25
Each
Units
- 75mm 54mm 31.6mm 75 x 54 x 31.6mm 2.2K/W - - Black - - - TO-3 -
RS Stock No. 169-4252
Mfr. Part No.SK92 150SA
kr 221,73
Each
Units
Universal Rectangular Alu 150mm 100mm 40mm 150 x 100 x 40mm 1K/W - - Black - - - - -
RS Stock No. 189-8583
Mfr. Part No.SK13-35-SA-22
kr 11,19
Each
Units
- 35mm 17mm 13mm 35 x 17 x 13mm 17K/W Clip, Screw - Black - - - TO-220 -
RS Stock No. 189-8606
Mfr. Part No.SK42-150-SA
kr 255,07
Each
Units
Universal Rectangular Alu 150mm 200mm 25mm 150 x 200 x 25mm 0.7K/W - - Black - - Aluminium - -
RS Stock No. 409-9931
Mfr. Part No.WA 217.0B
BrandSchaffner
kr 1 134,60
Each
Units
Universal Rectangular Alu 1m 200mm 25mm 1000 x 200 x 25mm 0.55K/W - - - - - - - -
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