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. 750-0932
Mfr. Part No.BGA STD 090
SGD12.85
1 Bag of 5
Bag(s)
- 23.9mm 40mm 10mm 23.9 x 40 x 10mm 10K/W Adhesive Foil - Black - - - BGA -
RS Stock No. 489-6186
Mfr. Part No.MBH45001-28W/2.6
BrandMalico
SGD9.80
Each
units
Clip 45mm 45mm 28mm 45 x 45 x 28mm - Clip - Black - - - - -
RS Stock No. 903-3175
Mfr. Part No.132AB1500B
SGD46.85
Each
units
Universal Rectangular Alu 150mm 250mm 30mm 150 x 250 x 30mm 0.17°C/W PCB Mount - - High Power Semiconductor Device, Optoelectronic Device Anodized Aluminium - 100
RS Stock No. 403-162
Mfr. Part No.437856
SGD0.936
Each (In a Pack of 10)
units
- 25mm 12.5mm 25mm 12.5 x 34.5 x 25mm 11.4K/W Solder - Black - - - TO-218, TO-220, TO-247 -
RS Stock No. 712-4302
Mfr. Part No.577202B00000G
SGD0.364
Each (In a Pack of 5)
units
- 19.05mm 13.21mm 12.7mm 19.05 x 13.21 x 12.7mm 24.4°C/W - - Black - Black Anodized - TO-220 -
RS Stock No. 234-2457
Mfr. Part No.159AB1500B
SGD36.19
Each
units
Universal Rectangular Alu 150mm 160mm 40mm 150 x 160 x 40mm 0.65K/W - - Black - - - - -
RS Stock No. 692-0590
Mfr. Part No.LA 17 150 230 V
SGD209.30
Each
units
Universal Rectangular Alu with fan 150mm 122mm 120mm 150 x 122 x 120mm 0.09K/W - - - - - - - -
RS Stock No. 706-6420
Mfr. Part No.TEP-HS1
BrandTRACOPOWER
SGD84.98
Each
units
TEP-75WI 61mm 57.9mm 11.4mm 61 x 57.9 x 11.4mm - Screw - - - - - - -
RS Stock No. 104-092
Mfr. Part No.637303B03000
SGD28.60
Each
units
Universal Square Alu 76.1mm 76.1mm 57.15mm 76.1 x 57.15 x 76.1mm 1.88°C/W - - Black - Black Anodized - LED -
RS Stock No. 867-0938
Mfr. Part No.SF-06-150-S
BrandSPREADFAST
SGD10.76
Each
units
Heat Pipe 150mm - - 6 x 150mm - - 6mm - - - Copper - SF
RS Stock No. 920-9427
Mfr. Part No.ILA-HSINK-RADL-120X150MM-BLK
SGD73.03
Each
units
SCOB - - 150mm - - - 120mm - - - - LED -
RS Stock No. 867-0941
Mfr. Part No.SF-08-300-S
BrandSPREADFAST
SGD16.24
Each
units
Heat Pipe 300mm - - 8 x 300mm - - 8mm - - - Copper - SF
RS Stock No. 880-1943
Mfr. Part No.ILA-EXTRUSION-01-0150.
SGD5.352
Each (In a Pack of 5)
units
Duris P5 150mm 24mm 18.9mm - - - - - - - - LED -
RS Stock No. 712-4223
Mfr. Part No.576802B04000G
SGD0.628
Each (In a Pack of 5)
units
- 19.05mm 12.7mm 19.05mm 12.7 x 14.48 x 19.05mm 27.3K/W Solder - Black - - - TO-220, TO-262 -
RS Stock No. 507-5116
Mfr. Part No.OS461/B/100
SGD25.49
Each
units
Universal Square Alu 100mm 100mm 40mm 100 x 100 x 40mm 1.2K/W - - Black - - - - -
RS Stock No. 409-9925
Mfr. Part No.WA 217.0
BrandSchaffner
SGD152.58
Each
units
Universal Rectangular Alu 1m 200mm 25mm 1000 x 200 x 25mm 0.55K/W - - Black - - - - -
RS Stock No. 189-8606
Mfr. Part No.SK42-150-SA
SGD23.63
Each
units
Universal Rectangular Alu 150mm 200mm 25mm 150 x 200 x 25mm 0.7K/W - - Black - - Aluminium - -
RS Stock No. 674-4769
Mfr. Part No.ICK BGA 40x40x10
SGD1.88
Each
units
Universal Square Alu 40mm 40mm 10mm 40 x 40 x 10mm 13.8K/W Adhesive Foil, Conductive Foil - Black - - - BGA -
RS Stock No. 505-2860
Mfr. Part No.P3/180B
BrandSemikron
SGD80.82
Each
units
SEMIPACK, SEMITRANS 180mm 125mm 135mm 135 x 125 x 180mm 0.39K/W - - Natural - - - - -
RS Stock No. 674-4759
Mfr. Part No.ICK BGA 27x27x10
SGD1.23
Each
units
Universal Square Alu 27mm 27mm 10mm 27 x 27 x 10mm 18.5K/W Adhesive Foil, Conductive Foil - Black - - - BGA -
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