Anglia Lighting LED Solid State Lighting
 

Thermal Products

One of the most important factors to consider during the design of a lighting system using LEDs is how are you going to control and get rid of the heat which is generated. Using our experience we are able to recommend the best thermal solution for your application.

This page details the various methods and technologies which can be employed to provide effective cooling of your LED lighting application.

It is not always necessary to use sophisticated thermal products. Sometimes standard FR4 may be suitable. One of the most important features of XLamp LEDs is their electrically neutral thermal path. This feature allows the light fixture to make use of FR4 PCB with thermal vias, which is 8 to 10 times less expensive than MCPCB. Click here for more information on using Cree XLamps with FR4 PCB.

 

Heatsinks & Thermal Interface Materials

Aluminium Heatsinks

Probably one of the most obvious and simple ways of cooling electronic components, however some thought needs to be applied to how you will interface the LED to the heatsink. Generally there will be a PCB between the LED and the heatsink, which means various thermal interface materials need to be employed to enable the efficient transfer of heat from the LED to the heatsink whilst maintaining electrical isolation.

Traditionally heatsinks employ either an aluminium or copper material hence the need for thermal interface materials to provide electrical isolation.

Ceramic Heatsinks

A further type of heatsink is also available which uses a ceramic material that is electrically neutral and does not require electrically isolated thermal interface materials. In some cases the LEDs can be mounted directly onto the heatsink meaning no PCB is required. These ceramic heatsinks are useful in applications where a much higher thermal performance is required. We are happy to offer advice on the use of these materials, please click on this link to contact our technical teams to discuss your requirements.

Anglia represent Aavid, Calinar and Fischer who each provide a wide range of aluminium heatsinks in standard extrusion sizes or stamped formats to suit most applications. All three suppliers can also offer heatsinks suitable for cooling LEDs. Calinar and Fischer are able to offer a fast turnaround custom heatsink design service.

Thermal Interface Materials

Anglia can offer thermal management solutions from both Calinar and Bergquist using a variety of interface materials.

Heatpipe

Heat pipe

A more efficient way of removing heat is by using a heatpipe, which allows you to remove large amounts of heat whilst only requiring a relatively small surface area compared to a traditional heatsink. The heatpipe works using a combination of vapour, condensing and capillary action all contained within a sealed pipe which has fins attached to further aid cooling. Anglia are able to offer thermal solutions utilising this technology. Please contact us to discuss your requirements by clicking this link.

Metal Clad Printed Circuit Boards (MCPCB)

   

 

mcpcbconstruction

MCPCB's offer one of the most effective methods of thermal management for lighting designs utilising LEDs.

MCPCB's comprise of 3 main components;

1 - Copper conductor layer where the LEDs are mounted.

2 - Insulator; a very thin thermally conductive but electrically isolated laminate material.

3 - Metal cladding - a sheet of aluminium or copper substrate which dissipates the heat produced by the LEDs.

These MCPCB's also allow easy interface to a heatsink or the outer housing of the customers application to aid cooling further.

Anglia are able to offer full technical and design advice for customers wishing to utilise this technology into their LED lighting application. Please contact us to discuss your requirements by clicking this link.

 

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