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Old 07-21-2010, 04:22 PM #17
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Default Re: A130 vs A140 diodes - are they different?

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Originally Posted by daguin View Post
I have been through MANY of these diodes now. I am convinced that they are the same diode. However, the arrays are binned for output. That means that there are more higher efficiency diodes in the 140 array than there are in the 130 array. For your extra $2 you are increasing the odds that you will get a higher efficeincy diode from a 140.

Peace,
dave
Very interesting, dave. When you say efficient do you mean in terms of the ratio of light energy out vs power in? if so, how are you testing that? do you have some data you can share?


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All together too many lasers:
650nm: 5mw pointer (early)
250mw O-like OL-CR-250 (170mw)

635nm: 500mw pointer rhd build 18650 SH-032 (650mw)
500mw O-like lab

532nm: 100mw SH032 DX module pointer (120mw)
150mw tri Lights Lab (260mw)
600mw Wicked Lasers Spyder III Krypton first gen

473nm 50mw Ultra Lasers Labby (over spec 160mw)
488nm 80mw Multi-line AL60X Argon
445nm: 1.3W Flaminpyro SS (1350mw) 1.4W
Wannaburn Super-small SS (1430mw)
2.9W RDTech 9mm SH032

450nm: 150mw OSRAM single mode 450nm lab
200mw Lazerer OSRAM single mode 450nm

405nm: 100mw WL E3 (85mw)
500mw 405nm O-like lab
500mw 405nm Jayrob SS (560mw)

3x Shinp 650/532nm/445nm 250+100+300mw Light show (modified to include the 445)

numbers in () are average run for 1 min IR filtered
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Old 07-21-2010, 10:19 PM #18
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Default Re: A130 vs A140 diodes - are they different?

How about pin layout? is this the same from a130 to a140? Mine has a case pin, according to my multimeter!!
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Old 07-21-2010, 10:25 PM #19
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Default Re: A130 vs A140 diodes - are they different?

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How about pin layout? is this the same from a130 to a140? Mine has a case pin, according to my multimeter!!
Everything about the diodes, except for the power output, is exactly the same.
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Old 07-21-2010, 10:54 PM #20
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Default Re: A130 vs A140 diodes - are they different?

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Originally Posted by plexus View Post
Very interesting, dave. When you say efficient do you mean in terms of the ratio of light energy out vs power in? if so, how are you testing that? do you have some data you can share?
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Just starting off my collection. Currently have:
150mW 405nm from O-like *outputting 156mW quite stable*
Jayrob SS 18650 kit, A140 diode at 1A putting out 900mW
100mW 532nm from dealextreme *broke*
500mW 532nm from O-like *lense dmg? down to 150mW with scatter*

200mW waterproof 650nm from O-like *outputting 210mW quite stable*
Plan to have soon:
1W 455nm from wicked lasers (ofc)

01010000011000010111001101110100011000010010000001 10111000100000011100110110000101110101011000110110 01010011101000100000011010010111010001110011001000 00011000010110110101100010011010010110011101110101 01101111011101010111001100100001
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Old 07-21-2010, 10:55 PM #21
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Default Re: A130 vs A140 diodes - are they different?

As i understand it, one could still connect the case pin to the negative pin when using a flexdrive, i think i understand now, duh!! The wire might have to be used when using something other than a flexdrive, right?
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Old 07-21-2010, 11:02 PM #22
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Default Re: A130 vs A140 diodes - are they different?

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Originally Posted by Fonduman View Post
Chart from post above ^^^
Its too bad we don't have something scientific and controlled. The chart is from a variety of sources using a variety of drive, sink and output measurement so the data is really not useful. the average deviation on that chart is around 8% which considering the disparate sources is probably within the margin of error.

Maybe someone will do a controlled experiment one day. If i had both diodes I would do it. Maybe I'll spring for a A140 diode so I can do this.

My approach would be to measure and record the I and V consumption of the diodes against the power output using the same PSU, ideally a regulated supply. Might as well record heat sink temp along with it.
__________________
All together too many lasers:
650nm: 5mw pointer (early)
250mw O-like OL-CR-250 (170mw)

635nm: 500mw pointer rhd build 18650 SH-032 (650mw)
500mw O-like lab

532nm: 100mw SH032 DX module pointer (120mw)
150mw tri Lights Lab (260mw)
600mw Wicked Lasers Spyder III Krypton first gen

473nm 50mw Ultra Lasers Labby (over spec 160mw)
488nm 80mw Multi-line AL60X Argon
445nm: 1.3W Flaminpyro SS (1350mw) 1.4W
Wannaburn Super-small SS (1430mw)
2.9W RDTech 9mm SH032

450nm: 150mw OSRAM single mode 450nm lab
200mw Lazerer OSRAM single mode 450nm

405nm: 100mw WL E3 (85mw)
500mw 405nm O-like lab
500mw 405nm Jayrob SS (560mw)

3x Shinp 650/532nm/445nm 250+100+300mw Light show (modified to include the 445)

numbers in () are average run for 1 min IR filtered

Last edited by plexus; 07-21-2010 at 11:04 PM.
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