Welcome to Laser Pointer Forums - discuss green laser pointers, blue laser pointers, and all types of lasers

LPF Donations

Links below open in new window

ArcticMyst Security by Avery

PHR-803t Diode Lifespan

Joined
Apr 20, 2009
Messages
10
Points
0
Does anyone know how long these diodes last (obviously depending on what the driver is at)? I am not sure whether or not to run mine at 100mA, 130mA, or somewhere in between.

Thanks, Baka
 





Joined
May 7, 2009
Messages
59
Points
0
If it helps at all, I've got 3 PHRs that've been running at 100-ish mA for more than 3 months. I had one mysteriously go out on me for a while, but after having it cranked up a bit (it was running around the 30mA range & it was tweaked to ~100) it started working fine again (and still going strong).
 
Joined
May 4, 2009
Messages
5,443
Points
113
how much is enough

I have had one running at 100ma for a month on and off burning up all kinds of stuf, and one other at 100ma for a week and it's also running fine. sometimes I know I run them for more than two min at a time but usuly under one min.

peace Pyro... :tinfoil:
 
Joined
Aug 13, 2008
Messages
361
Points
0
As they say, your mileage will vary greatly. I have a PHR set at 167ma and it's still going strong a year later with light use.
 
Joined
Apr 20, 2009
Messages
10
Points
0
Thanks for all the responses! I'll post pics when I've set the driver and finished the build. It's in the custom Maglite host that Jayrob and I have been working on. My greenie is also almost done :D!
 
Joined
Jun 1, 2008
Messages
238
Points
0
i set my phr at 150 mA last year and still lasing. The key is the heatsinking.
I also set one phr at 200mA open can, and still lasing since 1 month

For a good longevity i would go to 140/150 mA no more with a jayrob lens
 
D

Deleted member 8382

Guest
i set my phr at 150 mA last year and still lasing. The key is the heatsinking.
I also set one phr at 200mA open can, and still lasing since 1 month

For a good longevity i would go to 140/150 mA no more with a jayrob lens

Thats really high lol. 120mW is considered safe I think I recommend 130mA.
 
Joined
May 12, 2009
Messages
1,403
Points
0
i set my phr at 150 mA last year and still lasing. The key is the heatsinking.
I also set one phr at 200mA open can, and still lasing since 1 month

For a good longevity i would go to 140/150 mA no more with a jayrob lens


are you saying you have an open can PHR? didnt know those existed.
 
Joined
Nov 7, 2008
Messages
5,725
Points
0
I have a PHR at 90mA that I've had powered up continuously for just about 6 months. That equates to about 4320 hours. I started it 6 months ago for the purpose of determining lifespan. It is only one diode, and so it could be a freak, but a PHR should live a nice long life at 90mA..
 
Joined
May 22, 2007
Messages
351
Points
0
I have a PHR at 90mA that I've had powered up continuously for just about 6 months. That equates to about 4320 hours. I started it 6 months ago for the purpose of determining lifespan. It is only one diode, and so it could be a freak, but a PHR should live a nice long life at 90mA..

That's good to know, I might want to build a PHR-based laser with no duty cycle. About how many mW is it putting out?
 
Joined
Nov 7, 2008
Messages
5,725
Points
0
^about 80mW presently, but I haven't checked in a couple weeks. I hadn't seen any degradation as of the last time I checked and I don't anticipate any now.
 
Joined
Nov 7, 2008
Messages
5,725
Points
0
^Correct. The aixiz module is installed in a z-bolt heatsink as well, otherwise 100% duty would not be possible.
 
Joined
May 22, 2007
Messages
351
Points
0
How big is the heatsink? I am planning a Jayrob Pocket Mini build for this, which does use heatsinking. Of course the laser wouldn't be on for 6 months at a time, either.
 




Top