Please note we are still adding products to our new website. Can't see the product you need? Contact us on 01444 243 452 /

PS343 heatsink
PS343 heatsink

Images are for reference only, see product specifications for full details

PS343 In stock

PS343 Capsule Device Heatsink

The PS343 heatsink profile is designed specifically for capsule devices. We stock and machine a large range of heatsinks suitable for stud, modules and capsule semiconductors, alongside high power LED applications.

  • Profile dimensions – 73mm x 210mm
  • Suitable for capsule devices
  • Extrusion in stock
  • Cut to any length
  • Machined to order
  • Optional finishes
Add to wishlist

Expert technical support

Design Inspiration, whenever you need it

Custom & flexible ordering

As one of the UK’s leading heatsink suppliers, we stock and machine a wide range of extruded aluminium heatsinks and offer custom designs to cater to customers drawings. We have been supplying heatsinks to customers for many years in the rail, LED lighting, solar, industrial, automotive and marine industries.

Profile Dimensions
73mm x 210mm

Thermal Data

Length Watts C/W Bare DSC C/W Ano Fan 5m/s C/W Bare
200 150 0.23 0.205 0.06
200 250 0.215 0.192 0.06
200 350 0.2 0.18 0.06
300 250 0.2 0.18 0.05
300 400 0.19 0.17 0.05
300 600 0.18 0.16 0.05


Comparison Guide
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 along with the thermal impedance.

PS343 Comparison Guide

ISO 9001:2015, RoHS Compliant

Typical Applications

  • Rail
  • Solar
  • Electrical & Industrial equipment
  • Automotive
  • Marine

Refer to manufacturer’s datasheet for full technical information.

RoHS Compliant



, , , ,

Height (mm)


Width (mm)



RoHS Compliant

With over 50 years of extensive experience across a large range of markets, GD Rectifiers design and manufacture standard and custom made heatsinks, selenium and silicon rectifiers, suppressors, converters, inverters and regulator products for industrial power control applications.

GD Rectifiers’ engineers are experts in designing high quality and high reliability heatsinks and power assemblies for applications where optimised performance is required. Solid state semiconductor technology used in power assemblies provide customers with standard and custom design solutions for most industrial power applications.

The custom power specialist also manufactures a wide range of thermal management solutions, including axial fans, thermal trips and fan accessories. GD Rectifiers’ thermal management solutions improve reliability and prevent premature failure.

The company offer a wide range of high efficiency phase controlled thyristors, including replacements for obsolete thyristors, alongside circuit protection devices such as surge arresters and varistors for maximum security and protection.

GD Rectifiers

GD Rectifiers design and manufacture selenium and silicon rectifiers, suppressors, converters, inverters and regulator products for industrial power control applications.

We are one of the UK’s leading distributors of power electronic components and hold extensive stock of diodes, thyristors, IGBTs and MOSFETs from the world’s leading semiconductor manufacturers.

Learn more about our products by getting in touch with us.



GD Rectifiers PS343 Datasheet.pdf

Line Card

Line Card

GD Rectifiers Line Card 2023



GD Rectifiers Product Catalogue

Share Product

Related Products

Our specialist products, components and designs can be found in a wide range of applications around the world. We also partner with customers to design custom components and devices to suit their requirements.

PS349 Heatsink by GD Rectifiers
  • Download Datasheet
  • Parts List
  • Compare

PS349 Capsule Device Heatsink

PS349 Capsule Device Heatsink, 190.5mm x 158.75mm

PS352 heatsink
  • Download Datasheet
  • Parts List
  • Compare

PS352 Capsule Device Heatsink

PS352 Capsule Device Heatsink, 112mm x 240mm

PS321 heatsink
  • Download Datasheet
  • Parts List
  • Compare

PS321 Capsule Device Heatsink

PS321 Capsule Device Heatsink, 73mm x 247.5mm

  • Download Datasheet
  • Parts List
  • Compare

PS342 Capsule Device Heatsink

PS342 Capsule Device Heatsink, 120mm x 222mm

Get the Latest News from GD Rectifiers

Sign up for the latest products, offers and news. Read our Privacy Policy

Cookie Preferences

We use cookies and other technologies to improve your browsing experience on our website.
For more information, please visit our Privacy policy.