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Mini-Discussions > Recycling LED light bulbs

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message 1: by Robert (new)

Robert Zwilling | 2192 comments Ever wonder what's inside of a LED light bulb? These cutaway views of various LED bulbs show that they contain a lot more material and different varieties of substances than the old fashioned tungsten light bulb they replaced.

The bulb itself is plastic as well as some of the parts holding it together, the light creating components are solid state electronic items, which contain arsenic, lead if the solder is not lead free, and other unusual substances that require electronics to be recycled instead of tossed out, besides the economical recovery value.

Probably the most harmless part is the heat sink the individual LEDS are mounted on which is aluminum. The metal heat sink which the LEDS are attached to, which can be disk or rectangular shaped has thermal grease on it which doesn't harden or dry out. The grease can have tin, zinc, silicon, boron, aluminum compounds in it.

https://www.powerelectronictips.com/t...


message 2: by Jimmy (new)

Jimmy | 1612 comments Mod
I believe they have mercury in them as well, right?


message 3: by Robert (new)

Robert Zwilling | 2192 comments The LEDS should be mercury free, seems like they have everything but that. It is the florescent ones that the LEDs replaced that have the mercury in them. Someday we will get it right.


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