LED Thermal management for LED lighting

by / Monday, 12 May 2014 / Published in Company Blog

LED Thermal management for LED lighting

 

Philips LED Heat sink Ø100.5mm for Luxeon COB

Philips LED Heat sink Ø100.5mm for Luxeon COB

 

In terms of solid state lighting, thermal management is the process of controlling heat generation and heat removal from the LED package. LEDs require a constant current passing through them in order to maintain a constant illumination level. This current flow generates heat, which means that the device temperature must also be controlled.

The generated heat may adversely affect the light output and the lifetime of the LED if it is not managed properly. There are three basic types of thermal management products:
· Primary: metal core printed circuit boards (MCPCBs) with thermal compound, or copper-based PCBs

· Secondary: heat sinks or other materials that are attached directly to the LED or the circuit board. A heat sink is a device, usually made of metal, which absorbs and dissipates heat. Heat sinks are available in various shapes and sizes. They are especially important for high-power LEDs, which generate more heat due their relatively high operating voltages and currents and therefore need better thermal management.
· Tertiary: forced air cooling or other heat dispersal methods

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