lumileds making custom bins? lxk2-pw18-u00
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Lightingguy321
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send me a few of those LEDS will ya. Those are what we call Gen X Luxeon K2s. Unless of course the reseller mis marked them. The only bin code I know for K2s that could be the actual code is LXK2-PW14-U000.
Lightingguy321
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I am not totally positive, but the last check I made back at Lumileds Datasheets (just a second ago) says that the only bin that could possibly be if that were not labeled correctly by the reseller is the LXK2-PW14-U000 bin cool white LED. By the way, who did you buy these from? Please post a picture of the LED die to further help in identifying it. If they are PW18 do you mind sending me a few?
Lightingguy321
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How Many K2s? Mind sending a few to me? I have some LXK2-PW14-U000/ bin code: UYAN from the shoppe that I can compare your LEDs to.
Lightingguy321
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Another question, do the LEDs have two sets of gull wing contacts? Does it have the chamfer marking to indicate anode on one side (it is a 45° diagonal cut in the black polymer part of the LED casing, upper left hand side).
looks like other k2's i have used.
4 leads.
looks like 2 gold wirebonds to the die.
i noticed the dept id lux1 on the label.
Lightingguy321
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How many K2s did you recieve? These either sound like miss labelled K2s or they could be the next gen K2 after the PW14. If you don't mind sending me a few PM me or send me an Email via [email protected] .
Lightingguy321
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As of now the only two K2 variants available directly from Lumileds or from the Shoppe are the LXK2-PW12 and LXK2-PW14. If luxeon does it so that the test currents on the for the last digit in that code are "2" for 350mA and "4" for 1000mA. I would guess the number "8" in that position means tested at 1.5Amps and can be run as high as 2 Amps. That is just some extrapolation, not sure how accurate that actually is. For now just treat them as the LXK2-PW14s (don't blow away your investments).
"If they are PW18 do you mind sending me a few?"
"How Many K2s? Mind sending a few to me?"
"How many K2s did you recieve? If you don't mind sending me a few PM me or send me an Email via [email protected] ."
Geez, give the guy a break. Didn't see anywhere where he wanted to sell any.
Leadfoot
Lightingguy321
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I just made another round to the Lumileds website and it looks like from their http://www.lumileds.com/pdfs/Luxeon K2 Emitter -IPC-1752-1_v1.02.pdf (material composition sheet), that the LXK2-PW18-U000 is a valid bin code, so they are indeed the new generation of K2s.
tonycollinet
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what are the specs (esp lumen output) of the next gen k2s?
And are they available in a star format?
Cheers
Tony.
And are they available in a star format?
Cheers
Tony.
Lightingguy321
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As far as I see right now, not even lumileds is selling the next gen K2s yet. But if I have my part number suffixes right, the next gen can be ran as high as 2 Amps and can probably put out some where between 200-300 lumens (if that is the X bin under the new LED binning scheme)
Given the date code and the U bin, these are highly highly unlikely to be next generation K2s. They are just likely something special that Lumileds did for a customer. This is not unusual for a high volume customer. I.e. maybe the leads are bent different, etc.
