Heatsinks - Stock Extrusions
GD Rectifiers are the UK’s leading manufacturer of standard and custom-made heatsinks, heatsink accessories and heatsink assemblies. They stock and machine the UK's largest range of heatsinks suitable for stud, modules and capsule semiconductors, alongside high power LED applications.
GD Rectifiers is a leading supplier of a wide range of custom designed heatsinks to customers in the Rail, LED Lighting, Solar, Electrical and Industrial Equipment, Automotive and Marine industries. Offering a full service from design to production, technical support and fast delivery, GD Rectifiers is the No.1 heatsink provider in the UK.
Extruded heatsinks are the most commonly used type for thermal management. GD Rectifiers customers generally use extruded heatsinks for medium power systems both in natural and forced convection. GD Rectifiers can supply standard profiles or work to bespoke outlines specified by customers to achieve optimal performance, our extruded heatsinks can be supplied raw or with a finish, such as anodising or powder coating.
GD Rectifiers are experts in Thermal Management, Standard & Custom Made Heatsinks, Cold Plates, Liquid Cooling Solutions and Thermal Assemblies. Offering an extensive range of Air Cooled and Aluminium Heatsinks, they have a wide selection of high quality heatsinks readily available in stock at unbeatable prices and offer a next day delivery service.
Browse the heatsink range by device type, part number or comparison guide. The comparison guide allows you to compare the various sizes of each device.
GD Rectifiers offer technical support on all heatsinks including specific heat dissipation requirements. Please click on the heatsink part numbers below to view the complete data sheets.
If a particular product is not shown or if you'd like to discuss your requirements, please click here or call the office on 01444 243 452.
To view our complete range of heatsinks please scroll down to the bottom of the page.
Stud Device Heatsinks
Comparison guide Comparison guide Comparison guide
90x68mm 120x100mm 120x120mm
Small Isolated Device and LED Heatsinks
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27x65mm 25x100mm 40x96mm
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40x100mm 50x125mm 50x125mm
Comparison guide Comparison guide
50x140mm 73x145mm
25x245.6mm
81.5x81.5mm
Medium Isolated Device and LED Heatsinks
Comparison guide Comparison guide Comparison guide
40x100mm 39.5x150mm 40x160mm
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40x200mm 40x250mm
37x260mm
40x300mm
40x400mm
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125x125mm 135x125mm
High Efficiency Solid Fin Large Module Device and LED Lighting Heatsinks
81.5x81.5mm
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77x215mm 77x215mm
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77x215mm 80x260mm
74x265mm
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85x200mm 85x250mm
85x300mm
85x400mm
85x500mm
85x600mm
85x750mm
High Efficiency Hollow Fin Large Isolated Device Heatsinks
PSxx4 - Variable width heatsink
84xW, where W = 200mm, 250mm, 300mm, 400mm, 500mm, 600mm or 750mm
PSxx4C - Variable width heatsink
84xW, where W = 165mm, 200mm, 250mm, 300mm, 400mm
Capsule Device Heatsinks
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50x104mm 57x128mm 79x178mm
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70x210mm 86x200mm
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75x248mm 75x248mm
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120x222mm 120x222mm
73x270mm
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159x190mm 112x240mm
For all email enquiries, please click here or call the office on 01444 243452.
Complete Range of Heatsinks
The following heatsinks are suitable for volume requirements and in many cases sample prototypes can be purchased. If you have a specific extrusion that you require that is not on this site, please contact the sales team as we can tool dies for customer specific applications. As with all of our heatsinks, GD Rectifiers can offer technical support for specific heat dissipation requirements. Please click on each individual heatsink drawing for a complete data sheet.
For all email enquiries, email us or call the office on 01444 243 452.

GD Rectifiers Ltd
GD Rectifiers design and manufacture Selenium and Silicon Rectifiers, Suppressors, Converters, Inverters and Regulator Products for industrial power control applications.
They are the UK's leading Distributor of power electronic components and hold extensive stock of Diodes, Thyristors, IGBTs and MOSFETs from the world's leading semiconductor manufacturers.
Further information:
You can find further information on GD Rectifiers Ltd using the following links:
Tel: 01444 243 452
Fax: 01444 870 722
Email: enquiries@gdrectifiers.co.uk