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Concerning "pirahna" 5mm superflux leds.? Answered

 would appreciate some info regarding the  1/2 W 5mm "pirahna" superflux leds.  started using them and think they are great.  do they need any other regulating component other than a resistor to keep them running  safely?  how do they hold up over time? i just need to use one or two in my projects (powered by a  9v unregulated wall wart).   thanks!

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They're not very high forward currents, so stick with the resistor and you should be fine with that supply.

Steve