Alan B. Pearce <A.B.Pearce <at> rl.ac.uk> writes:
 
> >>  2. Current spec has it max If of 50mA.  I am running them at 35mA, way 
> >> below the rated spec.
> >
> >Could that be a misprint?
> 
> Certainly sounds high for a T1 3/4 LED - if that is what you are using - at 
> 100% duty cycle. I have always worked on 20mA at 100% duty cycle.

You must heatsink the LED to keep it bright and safe. A normal T1 3/4 can only
be heatsinked with a generous area of PCB and short pins afaik. If the current
is indeed 50 mA then the led should dissipate 200 mW or more. This definitely
requires a heatsink at that size.

Peter P.


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