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Old 01-25-2014, 04:13 AM #17
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Default Re: $65 9mm Nichia NDB7875 diodes

Received my two today. Great packaging, well done transaction. Thank you for the great deal. Now I've just got to figure out how to remove the lens holder from the diode. Anyone here have any good tips? Maybe a Dremmel tool with cutting disk? Surely there's a thread on the forum on how this is best done, will give the search function a whirl I guess.

Thanks again!


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Old 01-26-2014, 04:32 AM #18
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Default Re: $65 9mm Nichia NDB7875 diodes

Got it today, fast shipping, well protected, thanks. too bad I have no way to test it.
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Old 01-26-2014, 07:29 AM #19
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peters, I may be interested in at least one of those. Will get back to you when I have more time. Thanks, Paul

peters, I changed my mind. If you have any left send me your email address so I can send you payment. Thanks, Paul

Last edited by daguin; 01-26-2014 at 11:52 PM. Reason: merged consecutive posts
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Old 01-26-2014, 09:10 PM #20
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Default Re: $65 9mm Nichia NDB7875 diodes

I have 2 left, so do you want both? I'll shoot you a message with payment info.

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peters, I changed my mind. If you have any left send me your email address so I can send you payment. Thanks, Paul
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Old 01-26-2014, 10:01 PM #21
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Default Re: $65 9mm Nichia NDB7875 diodes

John, the money is sent. you should have it shortly. Thank you, I thought I was too late to take advantage of this unusually exceptional offer. Gratefully, Paul
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Old 02-17-2014, 06:45 PM #22
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Default Re: SOLD: $65 9mm Nichia NDB7875 diodes

Damn, my diode LEDd on me really fast, even with <1min duty cycles
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Host by Ehgemus NUBM44 450nm 6.8W @4.5A g lens
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Dominator NUBM07E 465nm 4.3W @3.5A g lens
L2P Nichi@ NDG4216 515nm 110mW @ .35A
501B by Blord osr@m PL520 520nm 95mW @.3A g lens
PL-E pro from Jetlasers nichi@ NDG7475 520nm 980mW, 730mW w/ 10X BE

Lasermax Genesis sight 532nm 5mW
RPL from Optotronics 532nm 450mW

Spartan from Dragonlasers 589nm 50mW
501B HL63133DG 638nm 210mW @.3A g lens
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501B by Blord LPC 826 660nm 325mW @?A g lens
PL660 from Laserbtb 660nm 1020mW

LPM
DL matrix and fan transmission gratings

laser powers in sig are about 20 seconds into duty cycle, not peak powers

http://laserpointerforums.com/f39/co...her-94720.html

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Old 02-17-2014, 08:45 PM #23
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Default Re: SOLD: $65 9mm Nichia NDB7875 diodes

I lost one at 2.25Amps with just a few weeks of minor use and 1-2 minutes run, Second one zombied recently @2.5A in a copperhead host after a 6months of rough use (1-2min) total of 5-6hours of use. Both were bought in a similar GB bloompyle did about a year ago.

So it's not just me, that's a relief. These diodes might live long enough at lower currents and copper sinks.
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Old 02-17-2014, 08:58 PM #24
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Default Re: SOLD: $65 9mm Nichia NDB7875 diodes

WOW! I have one of these and an MS-SSW-II coming to put it in and now I am very concerned about this diode! I thought that these were unused LDs removed from a projector and would be an excellent buy. Now, I'm not so sure. I guess I will have to wait and go ahead with the build and see what happens. I'm hoping against hope that this is just an outlier and not an example of things to come.

Thanks, sinner. I was more concerned by shakenawake's comments than yours, but you're right. I will assume nothing until I get my build finished.
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Old 02-17-2014, 09:06 PM #25
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Default Re: SOLD: $65 9mm Nichia NDB7875 diodes

Quote:
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WOW! I have one of these and an MS-SSW-II coming to put it in and now I am very concerned about this diode! I thought that these were unused LDs removed from a projector and would be an excellent buy. Now, I'm not so sure. I guess I will have to wait and go ahead with the build and see what happens. I'm hoping against hope that this is just an outlier and not an example of things to come.
It's definitely unused diodes from the projectors and you definitely did an excellent purchase. It was never implied that these diodes are fragile , rather a statistic I though worth sharing.

After these two aforementioned events, I find it really interesting how we keep pushing the amps to the max and still expect the diodes to live a lifetime. I think the datasheets recommend 1.6Amp for a reason that's all.
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Old 02-17-2014, 09:06 PM #26
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Default Re: SOLD: $65 9mm Nichia NDB7875 diodes

Sorry to hear that :/ What were you driving it with?
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Old 02-18-2014, 01:11 AM #27
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Default Re: SOLD: $65 9mm Nichia NDB7875 diodes

2.5A, a buck driver
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Host by Ehgemus NUBM44 450nm 6.8W @4.5A g lens
Host by Ehgemus M462 462nm 1.5W @1.2A g lens
Dominator NUBM07E 465nm 4.3W @3.5A g lens
L2P Nichi@ NDG4216 515nm 110mW @ .35A
501B by Blord osr@m PL520 520nm 95mW @.3A g lens
PL-E pro from Jetlasers nichi@ NDG7475 520nm 980mW, 730mW w/ 10X BE

Lasermax Genesis sight 532nm 5mW
RPL from Optotronics 532nm 450mW

Spartan from Dragonlasers 589nm 50mW
501B HL63133DG 638nm 210mW @.3A g lens
501B Ocl@ro HL63193MG 638nm 960mW @1.3A g lens

501B by Blord LPC 826 660nm 325mW @?A g lens
PL660 from Laserbtb 660nm 1020mW

LPM
DL matrix and fan transmission gratings

laser powers in sig are about 20 seconds into duty cycle, not peak powers

http://laserpointerforums.com/f39/co...her-94720.html

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