Luxeon Lime arrives – thanks to Lumileds

Lumileds Luxeon LimeHaving written about Lumileds’ 200 lm/W Luxeon Lime,  the most efficacious LED yet because its output is close to eye maximum sensitivity, I asked for a couple of samples.

And here they are.

These are the first LEDs I have seen on ordinary FR4 PCB substrates using Lumiled’s 33 thermal via pattern.

In this case, it is 1.6mm FR4, which as far as I can see means 16K/W junction to heatsink. With 0.8mm FR4 this would 10K/W.

Application brief 32 deals with this heatsinking.

Now, all I need is some spare time to make up a mounting to try them.

Fingers crossed.

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