I just bought these 112287670557 on eBay and it's a good deal it would be around 1.50 for each diode so couldn't pass it up they are ir I think but the question is what kind of diode could these be? If anyone has ever seen any like these please tell me what they are and if you can find any data sheets that would be much appreciated!
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Can anyone find info on these diodes?
- Thread starter Branson33
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Dutch67
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Got a direct link? The item number isn't working for me.
Unknown laser diode lot | eBay that should work I think I already bought them so I don't know if the number works or not.
diachi
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IR diodes, by the sellers vague description maybe 1W or so, unknown wavelength but IR for sure.
You'd have to hook one up and test it (spectro, LPM required) to be at all sure.
You'd have to hook one up and test it (spectro, LPM required) to be at all sure.
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30 IR diodes for $50 ain't too bad. They could be 808nm, 980nm etc... you'd have to test them as diachi said!
-Alex
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finally saw the listing now...
I'm going to guess that these might be an A package type LD? The picture isn't all that clear to me. ---> They're usually 808nm
I'm going to go with Diachi's opinion here too.
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I think it's probably 808nm. I haven't seen too many 980nm diodes on eBay for that cheap.
diachi
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Actually, based on the sellers description it's possibly higher than 808nm.
Usually you'd see a little tiny bit of red with 808nm.
I agree, 808nm diodes are normally cheaper than 980nm diodes. But the seller doesn't know what he has so that doesn't really apply...
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Yes, in order to sell for the right price, you kind of have to know what you are selling. If there is no visible dot at all, then it is most likely to be 980nm. Like Diachi said, 808nm can be seen still.
diachi
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If you know the right current and have adequate cooling, then no, it wouldn't hurt.
What the right current actually is seems to be anyones guess, unless someone manages to locate a datasheet somehow... Would just need to test, possibly killing/damaging a couple to figure out roughly where it should be set.
Figuring out the exact wavelength would help pinpoint the correct drive current/voltage as diodes at specific wavelength ranges generally have similar voltages when running at spec.
An LM317 or LM338 (5A limit instead of 1.5A) constant current circuit could likely drive one of these fine.
Well the guy hooked it up to a curve tracer and it turned on at 2.2 volts and said it could handle an amp in pulses I guess or just an amp without pulses with the right heatsink but how can I measure wavelength is there anyone I could send one to to test it out?
diachi
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There's a few members on here with spectrometers that could potentially test the wavelength for you - maybe one will chime in. The other option is talking to a local university, many science departments will have that sort of hardware.
Thank you diachi your the best but anyway could you maybe find me something on eBay that could potentially drive this laser? It turns on at 2 -2.2 volts I think and can handle an amp or possibly more I'll try to test one with just the power supply to see how many amps it can take first though.
but anyway could you maybe find me something on eBay that could potentially drive this laser? It turns on at 2 -2.2 volts I think and can handle an amp or possibly more I'll try to test one with just the power supply to see how many amps it can take first though.
