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Old 02-21-2013, 08:30 PM #1
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Default M-140 Burn In

I read in another thread that sometimes, even brand new M-140 diodes can give up the ghost, shortly after they are put to use over 700mA.

Is it unwise to run new diodes, for a while, on the bench to see if they're going to die young? How long is a reasonable burn-in time? 30 minutes, presuming they are properly heat-sinked?


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Old 02-21-2013, 09:39 PM #2
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Default Re: M-140 Burn In

You know pretty sure which one are good and less good right after putting it on a bench.
The dudes will give lower output immediately. No need for 30 minutes on a bench.
That is what my experiences are.
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Old 02-21-2013, 10:09 PM #3
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Default Re: M-140 Burn In

Good to know, thanks Kot.
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Old 02-27-2013, 06:40 PM #4
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Default Re: M-140 Burn In

This is making me nervous, I have a 1,35A driver (mohgasm) and I have a M-140 on it's way... I'm only going to use it with 30 second duty cycles
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Old 02-27-2013, 09:08 PM #5
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Default Re: M-140 Burn In

you'll be okay. Just get a procedure in mind, take your time and follow your procedure. the duty cycle will be determined by the heat sink you use. looks like you chose a nice conservative driver setting too.
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Old 02-27-2013, 10:08 PM #6
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Default Re: M-140 Burn In

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Originally Posted by cheech226 View Post
you'll be okay. Just get a procedure in mind, take your time and follow your procedure. the duty cycle will be determined by the heat sink you use. looks like you chose a nice conservative driver setting too.
So basically I spin the two ends of the red wire together (twist) and add solder to secure the connection, then heatshrink it. Same goes with the black wires. Right?
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Old 02-27-2013, 11:28 PM #7
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Default Re: M-140 Burn In

Yup red to red and black to black....hopefully the mohgasm kit uses red and black..
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Old 02-27-2013, 11:45 PM #8
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Default Re: M-140 Burn In

Quote:
Originally Posted by grainde View Post
Yup red to red and black to black....hopefully the mohgasm kit uses red and black..
It uses orange and cyan...
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Old 02-28-2013, 12:16 AM #9
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Default Re: M-140 Burn In

better than blue and brown.
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