Testing of the New 650nm/660nm 5W Diode.!

I sent money as gift for 2 and they came today will test soon :drool:

Wow that's awesome Angelos!

Hey not sure if it was already covered, but is it a case negative diode? Or case positive like an IR?

Guess you havent read through the thread... I already reminded fiddy...anyway its case positive...:beer:

Are these latest pictures showing raw output or with the 50mm lens?

No that is with the 50mm lens.

Iam bouncing the beam off a Mirror from the laser setup to shot across the 2 rooms.


My lab Area that i have been building for the past 6 months is still not finished so its the best i can do to show everything.

tested at 2.47A I used a TEC, and made a good heatsink for it to keep it cool ,used my 2.5A 445nm 9mm driver got just over 2w with no lens,
I am working on lens,
going to use a 808nm driver I have it goes to 4.6A going to try it later if I get time.going to look at the beam tonight out side . So far all looking good!

Many thanks to the pioneers on LFP! I think I'll hold my money until they drop like all the other diodes though

Rep for joo Lazeerer

ricktrent4 said:

tested at 2.47A I used a TEC, and made a good heatsink for it to keep it cool ,used my 2.5A 445nm 9mm driver got just over 2w with no lens,
I am working on lens,
going to use a 808nm driver I have it goes to 4.6A going to try it later if I get time.going to look at the beam tonight out side . So far all looking good!

Click to expand...

Identical to the power at 2.4A i was seeing.

Bright huh.? even at 2W.

lazeerer said:

Identical to the power at 2.4A i was seeing.

Bright huh.? even at 2W.

Click to expand...

at 2.47A got around 2w of power ,with a 60mm lens got best looking beam from about 5'' away from diode, took it in side tested on 4.6A driver and it blew it . tested the 2nd on out at 2.5A worked good off and on over and over use a good 5a driver at 4.6A got 4w with lens was going to make video showing 4w but it blew :cryyy: I think it would make a good 2w laser but I wound not push it over 2.5A tell I driver is found that will work on it . if some one can get it working with a small driver would love to see video of it running .I made a video of the setup so all could see and learn from what I did .I hope this will help I am out over $700 5w red tested and blew - YouTube

Rick is the second driver you used specifically designed to drive laser diodes? LED drivers and other constant current drivers that were not designed for diodes would be best to be scoped before being used with diodes specially lower forward voltage ones.

I heard you say it was stable but have you scoped it to see what it is doing with loads around 3V and running @ 4.6A during startup? This is something you won't see with just a test load.

Anyway I have mine and if I get some time tonight I will try to test the upper limits on it to see what it can take. I really hope they are not as sensitive as you are seeing. Hopefully it is just a driver issue. Anyway sorry to about your loss it always sucks.:yabbem:

DTR said:

Rick is the second driver you used specifically designed to drive laser diodes? LED drivers and other constant current drivers that were not designed for diodes would be best to be scoped before being used with diodes specially lower forward voltage ones.

I heard you say it was stable but have you scoped it to see what it is doing with loads around 3V and running @ 4.6A during startup? This is something you won't see with just a test load.

Anyway I have mine and if I get some time tonight I will try to test the upper limits on it to see what it can take. I really hope they are not as sensitive as you are seeing. Hopefully it is just a driver issue. Anyway sorry to about your loss it always sucks.:yabbem:

Click to expand...

the driver was mad for 5w 808nm diodes I hope it is just the driver I would love to make some 4w red lasers my 2.5A driver worked good on it and with the 60mm lens the beam looked like a 3w 445nm size .let me know what you find I was going to get 10 if I could make them work.

Sorry to hear you blew them rick. But i tested all diodes that shipped out and they where all fine 4.5W.

I also have 2 here aswell still and they are all happy doing 4.5W.....

I would like to see the driver you used as there is NO 4A+ laser driver available right now.

Please post a picture of your setup.

SO you probably blew it due to some kind of spike.

I would probebly want to design something with a soft start too. WHich i am..

Ive tested several of these diodes to above 5A with no issue.

Whatever happened was not due to the diode but something causeing the diode to fail.

Further more and whats funny is last night i purposely popped one of these to save the trouble for people guessing the Max..

I do this with every diode.

Well turns out these diodes do not pop till 7.8A. SO if you killed them some how then iam sorry but its not the diode fault but elsewhere.

To say 2W and clearly see near 5W time after time with my setup and you even said it was doing ~4W at 4.5A and then had issues. That is a clear sign to me that something spiked the diode. Theres is over 3A more to go before the diode Goes.

It LED'S which means that that is around where the Die Fails. usually when a diode pops they go open. But these take the 7.8A and LED. That is the Failing point of the die. Or around that currant. No one will push it that hard after the video i shown but still its good to know... At 4.5A you should have not had any issue. Ive had a diode running for 3 hours last night at 6A at 28C messign around. All was fine.

Iam wondering if possible you shorted the setup. Since these are Case + diodes.!?

Luckily i shot a video to show that these do not die till 7.8A:




The Temp was at -15C But when it popped it was at 10C.... (TEC leveled out)

This was a Happy diode and i killed it on purpose to show where they go....


Iam sorry for your loss Rick. But its for sure something else not the die.

I even have 1 in a build that iam almost done with at ~5A and its happy.

Iam sorry for the Death....

Wow, 7.8a some hardy diodes! Drivers please Thanks for taking the plunge Mr. Trent :beer: Will have to order some stuff from you soon!

~ LB

It must be the driver spiked !The one driver was made for 808nm so will have to find a good small driver hope you can find me one thanks!!

Thats terrible Rick. Iam so sorry.

Yes Iam working on a Buck driver for these now. With soft start.!

(Not sure about 1 cell setups>!)

It will be a 2 cell setup.

My X-drives only go up to ~3A.

SO the one iam going to be making will do ~5A or i might go for the 7A Chip. Not sure.!

But i am working on the driver.

THIS. IS. SO. AWESOME!!!!!
Time to start *really* boiling more soy sauce :crackup:

Thanks for making all this possible!