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Suutable driver for LPC-840

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Hello .Im new here and have question about the suitable driver for LPC-840 diode. I saw on Alaskan replied on the thread
https://laserpointerforums.com/f50/mitsubishi-lpc-826-a-99171.html
He told that LPC-840
"Working Current: <320-355mA
And Working Voltage:2.4-3.1V"
Any suggestions for the driver ? (eBay link please ).Thanks
 
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Did you ever have LPC840? I have one but died (ESD killed TT).
I saw the mitsubishi logo near the connection pins .This is genuine? Also see the photo I attached.
 

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Some sellers know the difference, some don't. Hard to say, I'd contact him after studying those markings closely in the photo's to be sure first, or you could use a lab power supply (with a heat sink on it) and see if it produces the power Styropyro outlined for his diode. If I am following that thread properly, his results were from a lower power diode, not the 840 and it failed early.

Edit: Oh, you probably don't have an LPM! The one I had fried, the seller sold me something far lower power than the 840.
I cant afford on LPM .too expensive for me lol .
 
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Im lived in Thailand so If I order the genuien from US .The shipping cost is more that the LD I would like to buy

Edit:I had remember that my old LPC 836 is weaker with this diode at same current and voltage .
 
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Did you know some red LD for >250mW for cheap (except the LPC series .I already known dem).
 
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About driver,you can choose ax2002 driver,just replace R2 on broad,0,6ohm for R2 is okay,current is 410 ma(price is 6 usd)
About diode,i think ml101u29-25 is OK,it can reach 400mw with g2 ,only 3usd/1pcs,you should buy 5 or 10,hahaha
Good luck for build
 
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About driver,you can choose ax2002 driver,just replace R2 on broad,0,6ohm for R2 is okay,current is 410 ma(price is 6 usd)
About diode,i think ml101u29-25 is OK,it can reach 400mw with g2 ,only 3usd/1pcs,you should buy 5 or 10,hahaha
Good luck for build
Im still in doubt about the working current and voltage to get more than 200mW for the U29(I have two of them xD ).
 

paul1598419

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The Vf on the LPC-840 is ~2.3 volts. It is low like most red diodes. Another good reason to use a buck driver. You can get by with a single Li-ion battery. I have one of these running at 385 mW at 400 mA using a continuous ground adjustable X-Drive from lazeerer. I use a single Panasonic 3400 mAh 5 amp drain battery and it has been pumping out photons for several years now.
 
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