luxeonIII

WildRice

Flashlight Enthusiast
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Nov 30, 2003
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SW Michigan
well, yas and no. A lux III driven at spec (1A) and drawing ,lets say 3.7v, would be pulling 3.7 Watts, and you can overdrive, I push mine to about 1.2A. But yas A luxI is roughly 1Watt, LuxIII about 3 Watts, and LuxV about 5Watts. Hope this helps. If im am wrong, please chime in and correct me.

Jeff
 

hotbeam

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Jan 2, 2003
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Melb, AU
I think the sooner we get away from using the term "1-watt" or "3-watt", the less confusing
it will be.

LuxeonI when driven at spec (@ 350mA) uses roughly 1 watt of power, hence it is known commonly as the "1-watt" LED. LuxeonIII when driven at spec (between 700mA or 1000mA) uses roughly 3 watts of power, hence the "3-watt" LED name. There is apparently a *slight* improvement in the LuxeonIII package (probably better thermal path from die to slug) that allows the LED to be driven at 1A.
 

idleprocess

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Feb 29, 2004
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decamped
Let's make this simpler (or just add to the confusion).

Lumileds only makes one type of "high power" blue/green LED die right now. One is used in the Lux I & III, and four are used in the LuxV.

It's the packaging that differentiates between a I & a III. There are plenty of folks out there that have had good luck driving a Lux I (350mA spec) to 1000mA & beyond with conservative thermal design.
 
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