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Old 12-19-2010, 06:47 AM #1
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Default 1W 445nm driving current?

I was wondering if these diodes could handle 1.5A?

I've seen the charts of various diodes, and most of them are driven in and around 1A, but not higher. Yes, shortened life and what not, but I was curious if they could handle 1.5A as I've heard of cases where they handle 2A (which I presume is not a common thing)

Heres hoping I don't fry my next diode before I can implement it in my build.


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Old 12-19-2010, 07:56 AM #2
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Default Re: 1W 445nm driving current?

It is you decision weather or not you want to drive it to 1.5amps. People tend to play it safe around 1 Watt until more information is available at higher current.

But with that said, there are many members here that are driving theres at 1.5amps and higher and they are still running Great. Take a look at DTR, He has been pushing these to the edge and most of his builds are at ~2 Watts and he has not killed one yet. So it is your call, alot are pushing these to 1.5amps no problem.

So to answer you question Yes they can handle 1.5amps But until further tests i would not call it safe. IMO.
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445nm 3.6W Monster Freak TEC 9mm, 3.1W Fat Boy Build , 2.9W Big Stainless , 2.7W Big Black, 2W Arctic G2 , 1.8W C13
473nm 178mW CNI-PGL-III-C , 56mW CNI-PGL-III-C
488nm 52mW OPSL SAPPHIRE 488-50, 59mW SS Melles Griot BCD-50&BCD-25 35mW
515nm 83mW Direct Green Diode Fully Custom Host
532nm 617mW RPL Style , 213mW CNI-PGL-III-A , 120mW DIY SS C3
589nm 130mW CNI-PGL-III-A
594nm 13mW CNI-PGL-III-C
632nm 4mW HeNe
635nm 1130mW Fenix TK35 ML501P73 , 918mW Small Sun ZY ML520G71
650nm 1056mW Polished CNI-PGL-C Mod, 5W Custom Build Red Devil
658nm 430mW LOC 826 Brinyte A20 , LCC 390mW C3 3 mode
660nm 500mW SS LQ ignis
671nm 800mW PowerModulem, 9mW Black Pen
685nm 44mW MXDL 2x AAA Pen, 41mW, 130mW Stainless Shadow
780nm 127mW Pen
808nm 758mW Fire Dragon From DJNY
LPM's 2W/5W Ophir
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Old 12-19-2010, 08:22 AM #3
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Default Re: 1W 445nm driving current?

Quote:
Originally Posted by lazeerer View Post
It is you decision weather or not you want to drive it to 1.5amps. People tend to play it safe around 1 Watt until more information is available at higher current.

But with that said, there are many members here that are driving theres at 1.5amps and higher and they are still running Great. Take a look at DTR, He has been pushing these to the edge and most of his builds are at ~2 Watts and he has not killed one yet. So it is your call, alot are pushing these to 1.5amps no problem.

So to answer you question Yes they can handle 1.5amps But until further tests i would not call it safe. IMO.
Cool, thanks. And yeah I haven't encountered DTR's lasers here yet. Probably just not looking hard enough lol.

I'm just reconsidering since i fried my diode by accidentally driving it upwards of 1.5 or upwards of 2.0 amps (not sure which), so I thought ok if 1.5 was the straw that broke the camel's back, maybe I shouldn't drive it that high lol
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Old 12-19-2010, 08:31 AM #4
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Default Re: 1W 445nm driving current?

Quote:
Originally Posted by Limecat View Post
Cool, thanks. And yeah I haven't encountered DTR's lasers here yet. Probably just not looking hard enough lol.

I'm just reconsidering since i fried my diode by accidentally driving it upwards of 1.5 or upwards of 2.0 amps (not sure which), so I thought ok if 1.5 was the straw that broke the camel's back, maybe I shouldn't drive it that high lol
Well just like i said it is your call. 1 amp seems to be safe, But there have been plenty that have them at ~1.5 amps just fine. So maybe the one that you did was closer to 2 amps like you said and could be the reason why you fried it. Also use a dummy load to set the driver before you hook the Laser diode up so your not guessing the current you are trying to set it at.

I dont want to tell you to set it to 1.5 amps and you loose another diode so what i will say is stick to ~1 amp and you will have a working laser.
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445nm 3.6W Monster Freak TEC 9mm, 3.1W Fat Boy Build , 2.9W Big Stainless , 2.7W Big Black, 2W Arctic G2 , 1.8W C13
473nm 178mW CNI-PGL-III-C , 56mW CNI-PGL-III-C
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635nm 1130mW Fenix TK35 ML501P73 , 918mW Small Sun ZY ML520G71
650nm 1056mW Polished CNI-PGL-C Mod, 5W Custom Build Red Devil
658nm 430mW LOC 826 Brinyte A20 , LCC 390mW C3 3 mode
660nm 500mW SS LQ ignis
671nm 800mW PowerModulem, 9mW Black Pen
685nm 44mW MXDL 2x AAA Pen, 41mW, 130mW Stainless Shadow
780nm 127mW Pen
808nm 758mW Fire Dragon From DJNY
LPM's 2W/5W Ophir
SPECTROMETER - 390nm to 980nm



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Old 12-19-2010, 08:35 AM #5
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Default Re: 1W 445nm driving current?

Quote:
Originally Posted by lazeerer View Post
Well just like i said it is your call. 1 amp seems to be safe, But there have been plenty that have them at ~1.5 amps just fine. So maybe the one that you did was closer to 2 amps like you said and could be the reason why you fried it. Also use a dummy load to set the driver before you hook the Laser diode up so your not guessing the current you are trying to set it at.

I dont want to tell you to set it to 1.5 amps and you loose another diode so what i will say is stick to ~1 amp and you will have a working laser.
lol actually, it was driven upwards of 1.5 or upwards of 2.0 by accident. I connected the LD incorrectly on my breadboard in a bit of a rush. crank the potentiometer and boom, light fades.
;_;
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Old 12-19-2010, 08:39 AM #6
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Default Re: 1W 445nm driving current?

Quote:
Originally Posted by Limecat View Post
lol actually, it was driven upwards of 1.5 or upwards of 2.0 by accident. I connected the LD incorrectly on my breadboard in a bit of a rush. crank the potentiometer and boom, light fades.
;_;
Yes you dont want that to happen again. The key to building lasers are being patient. If you rush things your going to make mistakes and in your case you lost a good amount of money ~45 bucks for the diode for nothing.

So take your time on this one and dont rush, it will be more of a pay off once you have it going.

Good Luck
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405nm 1013mW In Cree Z5 , 850mW LaserGLow Electra Mod , 583mW C3 BDR
445nm 3.6W Monster Freak TEC 9mm, 3.1W Fat Boy Build , 2.9W Big Stainless , 2.7W Big Black, 2W Arctic G2 , 1.8W C13
473nm 178mW CNI-PGL-III-C , 56mW CNI-PGL-III-C
488nm 52mW OPSL SAPPHIRE 488-50, 59mW SS Melles Griot BCD-50&BCD-25 35mW
515nm 83mW Direct Green Diode Fully Custom Host
532nm 617mW RPL Style , 213mW CNI-PGL-III-A , 120mW DIY SS C3
589nm 130mW CNI-PGL-III-A
594nm 13mW CNI-PGL-III-C
632nm 4mW HeNe
635nm 1130mW Fenix TK35 ML501P73 , 918mW Small Sun ZY ML520G71
650nm 1056mW Polished CNI-PGL-C Mod, 5W Custom Build Red Devil
658nm 430mW LOC 826 Brinyte A20 , LCC 390mW C3 3 mode
660nm 500mW SS LQ ignis
671nm 800mW PowerModulem, 9mW Black Pen
685nm 44mW MXDL 2x AAA Pen, 41mW, 130mW Stainless Shadow
780nm 127mW Pen
808nm 758mW Fire Dragon From DJNY
LPM's 2W/5W Ophir
SPECTROMETER - 390nm to 980nm



All My Reviews, Tips & Mods Are Here Now: >Reviews<


Check Out My YouTube Video's Here:
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