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PLP520-B1 520 nm 120mW diodes

highflya15

highflya15

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Hey guys, I see that DTR recently added the 120mW option for the PLP520 diodes. I am more than likely purchasing one for my next build but I had a few questions first.

Has anyone tested them out yet?

Is it able to be safely over driven to, maybe around 250-300 mA? (How much power would it put out at that current?)

Does anyone have beam shots?

Any pictures or helpful info that y'all have , it would be great if you could post them in this thread.

Thanks a lot,
Matt
 





NKO29

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People run these regularly at 350mA if i'm not mistaken. Many people have tested them out, and i beleive there is actually one for sale right now :thinking: Im 99% sure it would be considered safe to run it at 250mA - 300mA :)
 
highflya15

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Oh wow looks like they are tougher than I thought! And about how much power would it put out running it at that current?
 
djQUAN

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Maybe this can be pushed harder? I'm running my PL520 at 350mA (set by DTR) and it does get a little warm but still holding just fine at 116mW with a G2 lens, 102mW with a 3 element.
 
styropyro

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NKO29 said:
People run these regularly at 350mA if i'm not mistaken. Many people have tested them out, and i beleive there is actually one for sale right now :thinking: Im 99% sure it would be considered safe to run it at 250mA - 300mA :)
Click to expand...

I think you are thinking of the PL520...confusing right? The PL520 is rated for 50mW but we push them to a bit over 100mW. This new PLP520-B1 is rated for 120mW and is untested in the hobby world as of now, but some info should be out by the end of the week. :D I'm hoping to push mine to 200mW.

I just bought one from DTR and I will be doing testing on it. :beer:
 
djQUAN

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IIRC it is multimode? Let us know the dot shape! My PL520 has a very good divergence with a 3 element lens. I haven't done a more precise measurement but got around 0.2mrad not sure if I did it right though :p
 
NKO29

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styropyro said:
I think you are thinking of the PL520...confusing right? The PL520 is rated for 50mW but we push them to a bit over 100mW. This new PLP520-B1 is rated for 120mW and is untested in the hobby world as of now, but some info should be out by the end of the week. :D I'm hoping to push mine to 200mW.

I just bought one from DTR and I will be doing testing on it. :beer:
Click to expand...

You are 100% correct haha! Bloody confusing when there's only a slight difference between model numbers :)
 
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KRNAZNBOY

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They start dropping efficiency at about 400ma, so 500ma will be around the maximum input current i should think :thinking:

yay
-Matt
 
NKO29

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With most LDs, the efficiency is almost the same up to a certain current. After that threshold has been hit, the more current added the less extra power the LD will output. So even though efficiency might drop, you will still be getting more light by feeding it more current. Doing this "too" much will obviously affect the lifetime of the diode though.
 
KRNAZNBOY

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BubonicCronic said:
If the efficiency drops at 400mA, why would raise it to 500mA? :undecided:

That doesnt make sense. Its a $100 diode.
Click to expand...

Driving a diode at its "safe" current is a waste of a diode. You will get nowhere being "safe" Just look other diodes we use. The 9mm diode is rated at 1.2 amps! F*** that! WE DRIVE THAT AT 2.5AMPS! Driving a V1 PL520 at 200ma? BOOOOSHAT! WE drive dat at 400ma!

Going off the efficiency curve does not mean i am overdriving the diode. The original PL520 diodes' efficency curves stopped at about 200ma, but we drive them up to 400ma!

I am simply providing an estimate in where we can SAFELY drive this diode. That's all.

People will probably drive them higher. Some research would have told you that all diodes we use are driven at pretty much 2 times their rated current.

As you could see if you looked up the datasheet, that max current is 250ma, so 500ma is not out of the question.

Trust me, i have been doing this for longer than you have :p
So has NO4H and alot of others. I think they will decide what we can drive this diode at, not some undecided speculation :undecided:

Thank you and good day sir
-Matt

EDIT: loling so hard at this post
 
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highflya15

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Wow ok so pushing this diode with a current around 400 mA should easily put out over 200 mW?!?! That sounds pretty freakin sweet. I can't wait until some people start testing this bad boy out because I can't wait to start this build! :evil:
 
highflya15

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Again if y'all have any more information and/or pics pertaining to this diode, please post them in this thread!

thanks,
Matt
 
KRNAZNBOY

KRNAZNBOY

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It just came out :p, sure someone will have a build soon :D

@highflya15, please update your profile with a location and and avatar if possible

:beer:
-Matt
 
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