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03-11-2011, 04:51 PM #8Senior Member
Calling out to Weezard for LED advice
You'll need a microscope to get a good look inside to tell if it's multi-chip or single-chip.
Have a pic of a 1w Nichia 460nm emitter, multi-chip, and an Osram 660nm single-chip emitter. Note the bonding wires inside of each die area and where they connect. Some single-die emitters use multiple bonding wires for better electrical saturation of the diode, but it should be fairly easy to tell if it's single or multi.
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