I wouln't buy diodes anywhere else after dealing with DTR unless like he could not get them.Great source. Phil
Senior Member
I wouln't buy diodes anywhere else after dealing with DTR unless like he could not get them.
Phil Bergeron( AKA 142laser)
Senior Member
seems very odd to issue an incorrect data sheet?
Originally Posted by DTR
Eat Sleep Lase Repeat
Senior Member
Yea those are different diodes. We tested them a while back and could not see any differences with the NDB7A75. Probably are NDB7A75's but with that stupid ball lens that is worthless. Have to remove it to use making the diode open can leaving the diode vulnerable to particles in the air and possibly causeing oxygen degradation if it is true there is an inert gas in the can that keeps the dye from degrading. They seem to be coming out in sequence as well. That is the 05 version, there is also a NUBM41 and these NUBM44's. But for sure if we found the datasheet for these diodes I would highly doubt they would be saying 5A either. Also to get the 20K hour ratings they need to qualify for display use they do set there suggested currents very conservatively compared to diodes with 5K or 10K rated diodes not intended for display use. I would say 20% back of the knee of the diode would be a good max current for best life vs performance.
Yea I don't know on that one.
Last edited by DTR; 07-08-2015 at 11:30.
Creaky Old Award Winning Bastard Technologist
There probably is a gas mixture in the can. I once had a contract solicitation out for adding a microlens to existing diodes. For the recanning, they do use a gas mix to keep water and dust out. Without paying extra for it, I was told I'd be offered zero warranty.No idea what it is, but there is more to it then just an inert gas fill. When I asked what the mix was, I was told "proprietary" mixture, no disclosure to customers. The gas mix had to also protect the diode from the welding process used in bonding the can.
Steve
Qui habet Christos, habet Vitam!
I should have rented the space under my name for advertising.
When I still could have...
Senior Member
PLP450 450nm Laser Diode
This is the new 5.6mm Osram PLP450 single mode diode.
Last edited by DTR; 07-19-2015 at 18:35.
Jr. Woodchuckington Janitor III, Esq.
a single mode 445 doing ~400mW?
sign me up.
suppose you're thinkin' about a plate o' shrimp. Suddenly someone'll say, like, plate, or shrimp, or plate o' shrimp out of the blue, no explanation. No point in lookin' for one, either. It's all part of a cosmic unconciousness.
Senior Member
Wow A big step forward! Interested!
Philipp Wetter
Senior Member
I agree but only half way. Now if it were a 462nm or even a 473nm diode, I would agree! Now we just need to work on red!!! 350~400mW of single-mode 63Xnm would be MEGA leap!!!Wow A big step forward! Interested!
@Jordan, what's the pricing and availability of these new blues?
If you're the smartest person in the room, then you're in the wrong room.
Senior Member
I still prefer 450nm over 462, so I'm enthused. I just purchased 4 of these to provide comfortable upgrades as compared with 2 PBS cubed 120mW single-mode 450s. My last two paired sets of over-driven 450 120mW single modes builds clocked in at 217mW and 259mW after the collimation and PBS cube were taken into consideration.
DTR's got these new diodes listed for US$37 each. So one $37 diode and mount as compared to a pair saves me $100+ per projector once you factor in the PBS cube, mounts and such. Not to mention less alignment time.
-David
"Help, help, I'm being repressed!"
Senior Member
What does Osram's datasheet say for max output? I'm curious what that is compared to what you got out of it.
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