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FrozenGate by Avery

445nm Diode Lifespan

mattmagic100

mattmagic100

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Feb 19, 2009
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Well, its been a while since most of us have owned our 445nm diodes and I wanted to know, how many hours have most of you guys had on your diodes? Have they died already? Are they still alive? Can anyone estimate the number of hours that they have used on their diodes?

Any info would be extremely helpful!

Thanks guys!
Matt
 





i guess it also depends on what kind of diode it is, and also what current it is driven. Another part are the duty cycles..

greetings,,
 
I don't have hours, but I do have 445s outputting:

150mW
325mW
750mW
1400mW
1600mW
2135mW

... And no diode deaths yet.
 
I think he is mentioning the K@zio A140 diodes. I had four diodes. Two of them are sold, they weren driven at 1.2A and 1.4A. One is still going in a low power pen. The last one went zombie when I was extracting it from a laser. All lasers was used small amount of time.

live/kill ratio is 3:1 :D
 
Sure but - the one that went zombie... That wasn't due to overdriving or end of life, right? So that's not really "lifespan" so much... I've killed plenty of A140 diodes! Either through ESD or bad soldering (losing a leg!)...

But haven't had any die in-host during use yet.
 
Has anyone had their K@$¡0's for a long time and.can.estimate the minutes/hours used on it?

Thanks.again for all of the replies guys!!! :)
 
Why is it so important ?

Mine did maybe ~12 hours
 
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Mine is at 1.5W for more than 1 and a half year.
It has a very big heatsink and i repsect the dutycycles.(1min on - 1min off)

Jim
 
My oldest two have about 100 hours of modulated use running at 1.2A each, so I'd guesstimate about 30-40 hours of continuous use. No measurable power degradation so far which is encouraging.

There have been some very nice advancements in multimode diode tech lately, resulting in diodes that are very difficult to kill via overdriving. Even the new 635nm reds are very hard to kill that way. The output will die off as the current increases past maximum ratings, even to the point of zero output, but once the die cools it's back in business.
 
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