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Possible 8X Sled from HighTechDealz

daguin

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**SECOND EDIT** (9/16/09)

LOOKY -- LOOKY WHAT I FOUND . . . . . . . .



I have several S03 sleds here. This is it. Unfortunately, this is from an article published in JUNE of 2007!!!

Blue-Violet Lasers Evolve toward Next-Gen DVDs -- Nikkei Electronics Asia -- July 2007 - Tech-On!

Notice too that the write speed of the sled above is only 2X for SINGLE layer. Now the write speed in the 8X's are still only 2X for "BD-RE", but for "BD-R" it is 8X and these speeds are for double layer.

I know that this will come as quite a shock to us, but it would appear that our Chinese friends may have lied to us again :mad:

(and I really did get a freak)

Peace,
dave





**EDIT** (8/22/09) Through multiple PM's it is becoming apparent that no one else has achieved the results I did with my first test diode. WE NEED others to do a slope test with theirs. They do not seem to be able to take a direct "hit" with 300mA. This may be even less. I would hate to see everyone burn out a diode that was capable of less by trying to equal my results.

If you have one of these diodes (s03), you are de facto part of the experiment. Treat it as such. So far we only have ONE slope test. I believe that EVERY OTHER diode has failed at high currents!

If you have one working at high current, please let everybody know.

Peace,
dave


I got a new sled from Kendal from HighTechDealz.com to test the diodes. It was just to test the diode so I didn't do pictures for a complete review or tutorial. Hopefully, he can and will post pictures of the sled and the harvesting.

This is NOT the same sled, that was in my Pioneer BDR drive, that I posted about in the Tutorials board.

I tested the diode with it pressed into an aiXiz module and clamped into a heat sink. I used an aiXiz acrylic lens to better match the conditions under which I tested the Pioneer diode. I used a Rkcstr driver and a bench top variable power source (2A). I started out at 9V, but had to switch over to 12V at around 300mA (like with my Pioneer).

The red diode in the sled is our old friend the Long Closed Can diode. This is the same red diode that is in the GGW (6X) sleds. I did not test the IR diode.

Here is the raw data from my test of the violet diode. I did not "graph" the data in a computer friendly form. I did it the old fashioned way. I drew it out on graph paper. I am extremely busy this weekend. Maybe some kind soul (or Kendall) will graph it and post it. My hand drawn graph showed no kinks at 5mA resolution.

**EDIT** Lordy! I almost forgot the marking on the diode!! "Burned" into the side of the can of the diode is a alpha/numeric "brand." It looks like this:

6L VC
0096


Kendall’s mystery diode (maybe 8X?)

mA-mW == Voltage

55-25 ==3.9V (This was the "starting" current on the rckstr)
60-27
65-33
70-39
75-44
80-49
85-56
90-59
95-67
100-73 == 4.4V
105-78
110-84
115-88
120-93
125-100
130-106
175-111
140-115
145-123
150-127
155-132
160-142
165-145
170-149
175-155
180-162
185-166
190-173
195-176
200-182 == 5.2V
205-181
210-190
215-196
220-202
225-207
230-210
235-215
240-223
245-226
250-230
255-236
260-241
265-246
270-251
275-256
280-260
285-264
290-271
295-277
300-281 == 5.6V
305-284
310-290
315-294
320-297
325-304
330-307
335-311
340-316
345-323
350-325 == 5.7V (The output here with the 405-G-1 lens from JayRob was 425mW)
355-328
360-333
365-336
370-339

At this point I stopped the test. The slope of the graph was just beginning to flatten out. This was the same area (365mA) that my 8X began to flatten out. Also, my driver began to act up. I couldn't adjust the current reliably anymore. It was very hot! The test took me about 3 hours. If you pump 12V into a rkcstr for three hours, it's going to get hot! I stopped twice to plot the graph (at 200mA and 350mA) to make sure I didn’t miss a kink or knee.

The test was done with an aiXiz acrylic lens. The lens was already beginning to degrade. I did an output test at 350mA with the 405-G-1 lens that JayRob built for me. The output at 350mA with the good lens was 425mW!

The results from Kendall's initial testing of the diode were different than my results. We need some brave soul(s) to "pony up" and take the chance to test a couple more to make sure that I didn’t get a “freak” but it looks like an 8X to me.

We also need someone to test it with a higher power driver to see if the problems at the end of my test were an artifact of driver problems. Our current commercially available drivers were not built for these voltages at these currents. These newer diodes are raising the bar again.

It appears to have a lower "efficiency" than my Pioneer 8X. This is not a bad thing. It is just indicative that it may not be the same diode.

I would love to test a couple more, but I am leaving on vacation early Tuesday morning. Somebody else needs to take the plunge. I am afraid that all of these will be taken before I get back from vacation on the 27th.

I won’t have time to do a “longer term” test burn because I have a few other things I must get completed before I leave on vacation. However, it has over three hours (in three constant burns) on it just for this test. The temperature of the diode did not seem to be a factor. It was the driver that got hot. The diode/heat sink barely rose to room temperature.

Peace,
dave
 
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Interesting. Dave, you seem to get a lot of freak diodes, so we should have a few more people do tests as you said. I'm guessing that Kendall isn't putting it on the website until the diodes are fully tested.
 

lasersbee

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What is the Identification of the Sled other than "possible 8X"...
And what do they cost.....:cool:

As usual... a great I/mW/V test....


Jerry
 

daguin

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Interesting. Dave, you seem to get a lot of freak diodes, so we should have a few more people do tests as you said. I'm guessing that Kendall isn't putting it on the website until the diodes are fully tested.
I lead a charmed life :angel:

I have also been wondering if maybe these diode really "like" to be burned in with a slow ramp up to the higher powers. They may react more favorably to being "burned in" slowly as opposed to being hit with 350mA the first time. Maybe some of the more educated members can chime in on that idea.

Either that or I am REALLY good at treating my diodes with respect during harvesting ;)

Peace,
dave
 

daguin

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I added an "edit" to the OP. I almost forgot the marking on the diode!! "Burned" into the side of the can of the diode is an alpha/numeric "brand." It looks like this:

6L VC
0096


@ Lasersbee -- All I could find on the sled was one small bar code. Kendall will have to supply the other info (if he wants to) ;)

Peace,
dave
 
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Here's the graph!
(feel free to add it to the OP!)




EDIT: Here's the .xls sheet if you need to modify anything: http://www13.zippyshare.com/v/30186864/file.html

It was very hot! The test took me about 3 hours. If you pump 12V into a rkcstr for three hours, it's going to get hot! I stopped twice to plot the graph (at 200mA and 350mA) to make sure I didn’t miss a kink or knee.
Daguin, don't you think that it could be the heat from the rkcstr drive that prohibited the curve from rising up? (In the graph it doesn't seem to flatten). I mean, maybe it's possible to add a heatsink to the key components of the drive, I've had many projects limited by the heat on LM transistors. If at 350mA you got 425mW with the G1 lens then if it was possible to drive it at 400mA then you'd get around the same power your freak 512mW diode got.
 
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daguin

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Here's the graph!
(feel free to add it to the OP!)

Daguin, don't you think that it could be the heat from the rkcstr drive that prohibited the curve from rising up? (In the graph it doesn't seem to flatten). I mean, maybe it's possible to add a heatsink to the key components of the drive, I've had many projects limited by the heat on LM transistors. If at 350mA you got 425mW with the G1 lens then if it was possible to drive it at 400mA then you'd get around the same power your freak 512mW diode got.
Re-check the data entry around 100mA. Mine doesn't show that "wiggle." Also, the apparent kink at 200mA was where I stopped the test the first time to plot the graph. The current was a little different with the cool diode.

It is entirely possible that I reached the heat limit of the rkcstr. I could not touch it!

The graph just starts to flatten out at the end. It was above 365 that the graph on the Pioneer flattened out. The graph would have to continue on (like the one I did for the Pioneer) to easily see the change in the angle of the slope. Set a straight edge along the slope. The slight shift in angle will be evident.


One of the differences between this diode and my Pioneer is that my Pioneer puts out the 510mW at only 365mA with the 405-G-1 lens.

Any chance of doings these with the better lens?
Certainly. However, my purpose was not only to test this diode but also to compare it to a "known" 8X diode. You can easily convert this data without re-doing the full test if you only want to know a certain output at a certain current. Simply calculate the percentage increase between 325 and 430. Then you can use that percentage of increase to apply it to any other output in the graph to see what it would be with the G-1 lens.

Not only will I not have time to get this done this weekend. I would not want to subject this diode to another full test.

Peace,
dave
 
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Dave, the wiggle is because of this, I also thought it was strange but maybe you got confused when typing the readings:

90-59
98-67
100-73
105-78
Why is there a reading @ 98mA? Shouldn't it be @ 95mA? I'll fix it if so.

Do you think that if I apply a 28% increase on all mW values it would be a rough estimate of the power with the 405-G1? (maybe not at lower mA's..).
 

daguin

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Dave, the wiggle is because of this, I also thought it was strange but maybe you got confused when typing the readings:

Why is there a reading @ 98mA? Shouldn't it be @ 95mA? I'll fix it if so.

Do you think that if I apply a 28% increase on all mW values it would be a rough estimate of the power with the 405-G1? (maybe not at lower mA's..).
That would be it. I only took the reading at 5mA intervals. My tired eyes and fingers miss-typed.

The percentage increase is a good way to "estimate" the output with another diode. ALL diodes (as well as the lenses, and the situation/conditions) are a little different for each setup. +- is a normal condition.

Peace,
dave
 
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That would be it. I only took the reading at 5mA intervals. My tired eyes and fingers miss-typed.

The percentage increase is a good way to "estimate" the output with another diode. ALL diodes (as well as the lenses, and the situation/conditions) are a little different for each setup. +- is a normal condition.

Peace,
dave
Sorry, I thought maybe one reading was measured at 98mA and that's why I respected it.

Fixin' it right now...



EDIT: Graph updated, check it out ;)
 
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LarryDFW

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Dave;

The power output looks similar to the 8X Panasonic LD I tested:
8x Panasonic Test

The Panasonic with my Hi-Power BR lens was 350ma = 441mw = 5.6 VDC
versus your test with similar lens .. . . . . . . . . 350ma = 425mw = 5.7 VDC

LarryDFW
 
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cust11

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Can we get a price on this sled? I might be interested in helping test.

-Mike

or shoot me a PM
 

jayrob

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Great information Dave!

How about the little square bar code marking on the diode case? Is it smaller like the BDR 8X diodes? Or is it the same size as the PHR and 6X diodes?

Thanks for this information and testing! :gj:
Jay
 

daguin

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The back of the diode is devoid of markings.

The only mark on the diode is the one "burned" into the side of the can

6L VC
0096

Peace,
dave
 




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