Which red diode is better?

[Spyderz20x6]

Well, you read the description...
So, which one?

SLD1239JL-54 from Stonetek

or...

Long Closed Can from 6x Sled

Which one can handle more current and give you more power?
I'm not sure if the LCC is a Phazor diode, because i wasn't around in time for that group buy.

 

[jayrob]

I graphed the LCC from the 4X sled (or 6X - same diode) here:
http://www.laserpointerforums.com/forums/YaBB.pl?num=1223438970/500#502

I settled on 395mA's as good place to be. (IMO) This will give you about 225mW's with an AixiZ acrylic. I have one in a Pocket Mini at that current using one of those AR coated acrylic lenses from Virtual Village and it is putting out 247mW!

This lens: http://cgi.ebay.ca/Plastic-Collimat...ItemQQimsxZ20090220?IMSfp=TL090220123001r1848

Now if you have a build that uses a smaller capacity battery, like my Key Chain build with a 200mAh 10280, the choice would be the 1239JL-54 diode. Because you would want to keep the current lower with only a 200mAh battery supply. And the Sony/Senkat diodes will give you more power at the lower currents!

I'm gettng over 200mW's at only 275mA's using the 1239JL-54 diode and the above mentioned lens!:
http://www.laserpointerforums.com/forums/YaBB.pl?num=1230765788/128#135
Jay

 

[Spyderz20x6]

I graphed the LCC from the 4X sled (or 6X - same diode) here:
http://www.laserpointerforums.com/forums/YaBB.pl?num=1223438970/500#502

I settled on 395mA's as good place to be. (IMO) This will give you about 225mW's with an AixiZ acrylic. I have one in a Pocket Mini at that current using one of those AR coated acrylic lenses from Virtual Village and it is putting out 247mW!

Now if you have a build that uses a smaller capacity battery, like my Key Chain build with a 200mAh 10280, the choice would be the 1239JL-54 diode. Because you would want to keep the current lower with only a 200mAh battery supply. And the Sony/Senkat diodes will give you more power at the lower currents!
Jay

Awesome
So it is very similar to a LOC, right?

 

[jayrob]

So far the closest comparison to an open can... (it's different than the 'Phazor' diodes that DDL got though) It's a nice tough diode. A nice bonus from a 6X sled!

Some may be pushing them higher. But I like them at 395mA's. (heatsinked)
Jay

 

[pullbangdead]

Quick related question: pin-out for the long closed, is it the same as the long open can? And I read in that linked thread that the 6x blu-ray is the same pit-out as the PHR, true as well?

That thread thoroughly confused me back when it was alive, with the 6x-that-turned-out-to-be-4x, then the many starts and stops or whatever happened; just making sure of the pin-outs for the 2 diodes from the 6x sled.

Thanks, and thanks for the link to that chart for the LCC.

 

[jayrob]

Your welcome!

Yes, the pin connection on the long closed can red is the same as an open can red.

And the blu-ray diodes found in the 4X and 6X sleds have the same pin connection as the PHR's...
Jay

 

[jander6442]

Your welcome!

Yes, the pin connection on the long closed can red is the same as an open can red.

And the blu-ray diodes found in the 4X and 6X sleds have the same pin connection as the PHR's...
Jay

So with the SLD1239JL-54 I know it is a popular red diode and able to run at the stated mA but at the "threshold" or
high end which one barring current figures would.........

a) live longer on a say 400mA basis
b) if both were heatsinked and fed say 400 mA wich one would survive the longest.

in my opinion I think the LCC is pretty damn hardy running one of mine at 425mA and the cycle time for handheld heat test is
about 2.5 min after that I shut it down : I would love to tell the mW but that as you know would require a device that I don't poss.

YET.

Off topic but Jay in all your post, I appreciate as all ol' schooler's post what are you using to measure mW. Thanks in advanced

 

[jayrob]

For that kind of current you will want to go with an open can or the LCC. The 1239JL-54 diodes are excellent up to about 300mA's. (IMO)

For power readings, I have a Coherent PM5200 meter with a PM3 thermal head. It is an excellent meter with digital read out. I know it is dead on accurate because of some comparison lasers that got sent around to a few members who recorded their readings using the same 'test lasers' in this spread sheet:
http://spreadsheets.google.com/ccc?key=pW49OuYfRMm7FXsb9trxWdQ&hl=en

If you are interested in a good meter, I may have a line on a good thermal meter with a coherent sensor for maybe $250...
Jay

 

[jander6442]

For that kind of current you will want to go with an open can or the LCC. The 1239JL-54 diodes are excellent up to about 300mA's. (IMO)

For power readings, I have a Coherent PM5200 meter with a PM3 thermal head. It is an excellent meter with digital read out. I know it is dead on accurate because of some comparison lasers that got sent around to a few members who recorded their readings using the same 'test lasers' in this spread sheet:
http://spreadsheets.google.com/ccc?key=pW49OuYfRMm7FXsb9trxWdQ&hl=en

If you are interested in a good meter, I may have a line on a good thermal meter with a coherent sensor for maybe $250...
Jay

PM me the details.

 

[jander6442]

That's backwards sorry I meant the LCC. with the 400mA. Now I now why your so dilligent on the labeling. Hey I'm catching on

more money saved. ;D ;D ;D ;D ;D

 

[wolfblue]

I bought the 6x for the 405 diode. So I looked at the red one as a bonus. I wanted to stop at 380mA but could not end up with the right resistors for a LM317 (DDL driver). I ended up at 2.9 ohms, on top of the Radio Shack 25 ohm rheostat. 431 mA and I've run it 15 minutes full power a few times. I'm surprised that it does not get very hot in only a Axiz module. I built it last weekend and it now has maybe 3 hours on it with half being at full power.
It cuts tape but not as well as the 6x BR at 175 mA. And the LCC punches receipt paper in a few seconds.(( the only matches I have are red..forgot to try a sharpie pen :-/:-X
The 431mA is on a calculator, I did not put a series resistor in to look at the real current. I have a LPC 815 sled here but have not got around to building the LOC yet. I like the LCC so much theres no real hurry.

--John