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EXTENDING THE USEFUL LIFE OF HIGH POWER LED PRODUCTS THROUGH THE USE OF INSULATED METAL SUBSTRATES

EXTENDING THE USEFUL LIFE OF HIGH POWER LED PRODUCTS THROUGH THE USE OF INSULATED METAL SUBSTRATES

 

Summary :
LEDs generate a significant amount of heat as a by-product of the visible light they produce. If not managed properly the heat generated by these LEDs can cause an early demise for the consumer electronics in which they are commonly found. The use of Insulated Metal Substrates can help manage this problem and extend the useful life of products.

The PCB design is printed on an Insulated Metal Substrate (IMS) laminate, which consists of a very thin dielectric layer sandwiched between a metal baseplate (generally made of aluminium) and a thin layer of copper. LEDs and other components are only mounted on the thin copper side.


The life and efficiency of a LED is a direct result of correct dissipation of the temperature generated by the emitter through the surface on which it is mounted. Keeping the LED temperature under 90ºC will guarantee full luminosity and a long-lasting useful life that can reach over 100,000 hours. Dielectric plays vital role in the dissipation of the temperature.


Ideally, the dialectical strength of a 3 mil layer can stand in laboratory conditions of 6kV, but no supplier can guarantee that 100% of their 3 mil layer will withstand 6kV. This is because mass production will always produce some impurities and impurities cause dielectric failures.


EI has the solution for this problem. We provide PCB's which can stand 100,000 hours at 118 ºC while keeping 50% of the initial dialectical strength value. The initial dialectic strength of IMS was 10kV. After 100,000 hours it can be seen that IMS will stand. By guaranteeing these values it can be assured that LEDs will dissipate their heat to the aluminium or copper substrate correctly and the IMS material will not be the cause of failure for the LED.


EI provides such solutions which can ensure most effective thermal management in the PCB's. Contact us to know more.



Note: EI's standard lead time is 1 week with no extra premium!

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