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FrozenGate by Avery

12x BR DIODES

Hi All,

Apologies if some of the copied post below is not appropriate but I just copied it from the GB thread. It turned into a bit of a review anyway as it was just a sled that needed testing. The test info is useful though and if I can edit before you see it then I will!

Here it is...


Some testing of a Lite-On!

So, I got home this evening and ripped straight into the package that's been waiting here for a few days, (well, not straight away. I know you want news but you gotta let a man eat! :D ).

A note: I am very careful with ESD precautions. All through the process of opening the package I am wearing my ESD wrist strap and the work surface is also grounded. I even went into the package from the bottom to avoid too much packing tape!


These two will both eventually be tested but only one has data attached to it as yet.

333bgn8.jpg


The sled!

qoglqg.jpg


You can see the PCB has the correct SF-BW512L stencil but not in the same place for each sled...

... One has it on the right...

51sf1v.jpg

...one on the left.

2q9j8dg.jpg


Both together. Notice slight bending of the optic shroud on the bottom one...?

2enwcip.jpg


This is the one I chose to tear into first. Slight damage like this isn't uncommon in my experience with other sleds and it isn't anywhere near the damage on the box so I don't think they are connected.

zjc589.jpg


The back bar code...

264kku8.jpg


extracted diode still in heatsink...

nbrbbo.jpg


Safely installed in an Aixiz... (A little tip here: If you have a Flaminpyro GGW 6x diode extraction cup tool then clip the corners of the original heatsink, (at least I had to as they were slightly misshapen by trying other techniques), to fit squarely in the extraction cup tool. Use an old diode, face to face with your new one and gently push the old diode in with the screw and the new diode comes out the back of the heatsink! I could probably explain that better and will look to improve this but that's how I extracted the diode effortlessly!)

2qas6qb.jpg



After this I ran some tests....


Lasing threshold - 3.65V at 30mA

Run from there in 25mA steps we get these results on my LaserBee I @ 150mm using a Jayrob 405-G-1 lens

V-------mA-----mW
3.97----50------33
4.3-----75------71
4.55----100----107
4.78----125----146
4.98----150----186
5.15----175----228
5.28----200----262
5.39----225----302
5.49----250----340
5.57----275----379
5.64----300----412
5.71----325----450
5.76----350----483
5.81----375----518 Class IV!
5.85----400----551
5.89----425----586
5.93----450----619
5.96----475----653
5.99----500----685

Here's a pic of the readings, (ignore the peak value as this was merely tuning to 500mA) ...

1zgw40m.jpg



I would have stopped at 500mA but wanted to see 700mW, so...

Final reading...

6.02----525----717


All in all I think the test was pretty good. I have the other one to do so it is only one set of data but it makes me feel better to have checked at least one. Please forgive the state of my workstation. I have been busy going back to college, arranging GBs and the like. ESD precautions are still VERY intact.

M
:)
 
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Great work Morgan.;)

You have a cleaner looking setup than mine and you power supply looks nicer. Mine only works in whole numbers.:yabbem:

But it does seem that the numbers are not far off from my first test.

I am not sure what is wrong with my second diode. It is a voltage hog and less powerful at the same time.:cryyy:
 
That's efficiency for you. It's just that variable. The 8x I tested recently wanted high voltage than even this 12x IIRC!

Yes, they are very close, I was only teasing. :p

I am in the process of testing a claimed 12x that I have not seen mentioned before and a search on LPF shows no mention. I know I'm supposed to be testing the other GB diode but I couldn't resist! I'll post some result here but I'll put up a seperate, 'tear down', thread later today and link it...

[EDIT: Link here - http://laserpointerforums.com/f38/new-kid-block-12x-bdr-s06j-56017.html]

M
:)
 
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I think the biggest downside to my power supply is that it adjusts in 10mA increments. So I if I am doing a test with 10mA increases I can't be sure that it is not going like this.

13, 20, 35, 49, 51, 68

If this makes sense.:thinking:


Look forward to the info on the other 12X
 
So would it be safe to say, between 650/700mW is ok for these diodes?
 
DTR said:
I think the biggest downside to my power supply is that it adjusts in 10mA increments. So I if I am doing a test with 10mA increases I can't be sure that it is not going like this.

13, 20, 35, 49, 51, 68

If this makes sense.:thinking:


Look forward to the info on the other 12X
Click to expand...

Yes, that totally makes sense. It lessens the accuracy of the resolution. That may explain the less than linear appearance of the graph and to open up the measurement range doesn't feel accurate enough. It may flatten the bumps but you could miss some event.


ped said:
So would it be safe to say, between 650/700mW is ok for these diodes?
Click to expand...

I don't think anyone can be sure of that just yet as long term testing has not returned much data. They are capable of it, the graph looks linear, but degredation may occur along with early death. It also depends on efficiency I suppose. Bearing this in mind with the cost of the early ones, it was more of a loss then and I think that would tend to make the setting conservative when you're reluctant to lose a $100+ diode.

That's not very scientific though!



Okay, I have some results for you for the BDR-S06J sled diode. (That, "S", not being a, "5", or a, "2", could be a typo I suppose but the figures are encouraging!)

Test done, as before, with a Jayrob 405-G-1 lens and a LaserBee I at 150mm.


Lasing Threshold

3.68V @ 30mA giving 5mW


Vf------mA----mW
4.01----50-----38
4.35----75-----81
4.62----100---121
4.88----125---166
5.08----150---209
5.27----175---255
5.41----200---296
5.53----225---337
5.64----250---381
5.73----275---418
5.81----300---462
5.88----325---503
5.93----350---537
5.99----375---579
6.04----400---617
6.08----425---656
6.11----450---692
6.15----475---728
6.18----500---767

Not dead...

Quite good outputs. Now, if someone wants to kindly put those into a graph so we can interpret easier... :whistle: BB? Anyone

M
:)
 
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Maybe 3zuli will be up to it. He made a nice graph of my 12X bench test.

I like the look of that one. Great numbers.

Were you able to get that as a sled? I may be interested.
 
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I would still like to get some more info on the unit that Extelon did. He is saying he got 787mW@500mA with a Lite On diode. All the data that is coming out points to 500mA giving 680ish. It is listed on the first page under the 12X owners.
 
Freaks have always come up from time to time. It's a luck of the draw thing. Others may be able to explain why a little better but production differences matter.

To answer your question in the earlier post. These were complete sleds. The link a few posts back takes you to the teardown, (which I think you've probably seen by now ;) ), so you can see it.

M
:)
 
I put together a 12x recently, happy to provide another data point.

Diode: SF-BW512L sled (from rayfoss)
Host: UltraFire C3 with a Darkhorse heat sink
Driver: My own design, based on TPS61165 IC
Lens: 405-G-1
Current: 420mA
Output: 560mW

Run time so far is approximately 30 minutes.
 
OOPs thats for the entire drive. I thought I would post it in case anyone wanted it rather than the sled for some reason.
 
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