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Need help identifying laser diode from DVD drive

Joined
Oct 15, 2007
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510
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18
So out of boredom, I decided to take apart my no longer used LG GH22NP20 DVD re-writer and to was lucky enough to find an open canned red diode which I then pressed into an Axis module which in turn got inserted into a custom made Aluminium heatsink with a small fan to keep things cool and was able to push it to around 3.2V and 700mA, after which, the output power seemed to decrease.

Problem is, I have no way of identifying this diode and therefore cannot know what is the maximum operating current as I would need the datasheet of the diode in order to do so.

I've posted a picture of it along with the details of the DVD unit in hopes of having a better chance of identifying what this diode could be.
 

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Lifetime17

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Dec 15, 2014
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Hi
Scrap it and buy a nice 638 Mitsubishi from DTR in a copper module
 

Giannis_TDM

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Apr 27, 2019
Messages
652
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93
So out of boredom, I decided to take apart my no longer used LG GH22NP20 DVD re-writer and to was lucky enough to find an open canned red diode which I then pressed into an Axis module which in turn got inserted into a custom made Aluminium heatsink with a small fan to keep things cool and was able to push it to around 3.2V and 700mA, after which, the output power seemed to decrease.

Problem is, I have no way of identifying this diode and therefore cannot know what is the maximum operating current as I would need the datasheet of the diode in order to do so.

I've posted a picture of it along with the details of the DVD unit in hopes of having a better chance of identifying what this diode could be.
To be safe keep it around 350mA. Good catch! Deep reds at powers are sooo niccee
 

Unown (WILD)

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Staff member
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Sep 4, 2020
Messages
985
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93
Yeah it could be one of those LOC diodes. Your tests pretty much show what it can do and handle. When a diode starts to drop when more power is added then that means you've reached a bit beyond its potential. Ah brings back memories of harvesting diodes from burners
 




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