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Old 03-12-2012, 04:23 AM #49
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Default Re: A-140 vs. M-140 vs. H1600

Quote:
Originally Posted by Zyxel View Post
Somebody will help with the specification on the M-series diode?
And still a question - in Casio XJ-H1600 32 pieces of diodes?
Yes the H series have 32 diodes.


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Old 03-12-2012, 07:53 AM #50
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Default Re: A-140 vs. M-140 vs. H1600

Can someone get some data matrices for the old A series diodes?
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Old 03-12-2012, 09:06 AM #51
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Default Re: A-140 vs. M-140 vs. H1600

I have a close-up of an A140 445 diode,

Large macro photo of SOC, LOC and 445nm diode.
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Old 03-12-2012, 09:16 AM #52
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Default Re: A-140 vs. M-140 vs. H1600

I thought the consensus in that thread was it was that it is a 405 diode. It looks like just two wires showing through the diode window. Also the case pin looks pretty long for a 445.


Great photos though.

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Old 03-12-2012, 09:18 AM #53
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Default Re: A-140 vs. M-140 vs. H1600

Quote:
Originally Posted by Blord View Post
I have a close-up of an A140 445 diode,

Large macro photo of SOC, LOC and 445nm diode.
Thanks. I turned it into a quick a dirty scannable code.





Decodes to: 3304808762

So, to recap:

[A Series]
BJord: 3304808762

[M Series]
BJord: 3304940224

[H Series]
RHD: 3305273097

It strikes me that these are probably bare serial numbers. This could actually be useful to us, as we watch the progression of diodes. I would love to get more people to provide the codes, so I'm going to open up a thread for that purpose.
Attached Thumbnails
A-140 vs. M-140 vs. H1600-1.jpg   A-140 vs. M-140 vs. H1600-2.jpg  
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Old 03-12-2012, 09:19 AM #54
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Default Re: A-140 vs. M-140 vs. H1600

If there are 4W diodes, is the battery technology we use going to work? Or are we going to have to use AC sources?
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Old 03-12-2012, 09:22 AM #55
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Default Re: A-140 vs. M-140 vs. H1600

Quote:
Originally Posted by Tech_Junkie View Post
If there are 4W diodes, is the battery technology we use going to work? Or are we going to have to use AC sources?
I have batteries that will discharge as high as 100A. I think we will be ok there. I think it more likely we will have problems with hosts tailcaps and wiring melting from not being able to handle 5-6A current.

Last edited by DTR; 03-12-2012 at 09:22 AM.
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Old 03-12-2012, 09:32 AM #56
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Default Re: A-140 vs. M-140 vs. H1600

Quote:
Originally Posted by DTR View Post
I have batteries that will discharge as high as 100A. I think we will be ok there. I think it more likely we will have problems with hosts tailcaps and wiring melting from not being able to handle 5-6A current.
I would be surprised if 4W output required 5-6A of input. Based on the efficiency we're seeing from current Nichia diodes, I would expect more in the neighborhood of 3A input for 4W output.

I opened up a thread for data-collecting serials / QRCodes:

Collecting 445 Diode QRCodes/Serials

If I'm right that these are just serial numbers, then this may actually be somewhat useful for tracking diodes.
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Old 03-12-2012, 10:26 AM #57
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Default Re: A-140 vs. M-140 vs. H1600

Quote:
Originally Posted by DTR View Post
I thought the consensus in that thread was it was that it is a 405 diode. It looks like just two wires showing through the diode window. Also the case pin looks pretty long for a 445.


Great photos though.
You could be right. I am not sure about which diode it is.
I will take new pictures of an A-140 diode. If I can find it back in my diode dump
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Old 03-12-2012, 12:38 PM #58
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Default Re: A-140 vs. M-140 vs. H1600

Concerning the 4 watt Soraa diodes, I found this:

SORAA - News

The article is dated January, 2011
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Old 03-12-2012, 12:46 PM #59
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Default Re: A-140 vs. M-140 vs. H1600

If they are rated 4W, then pushing them to 6W+ should not be an issue.

These are exciting times.
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Old 03-12-2012, 12:59 PM #60
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Default Re: A-140 vs. M-140 vs. H1600

Quote:
Originally Posted by Zyxel View Post
Somebody will help with the specification on the M-series diode?
And still a question - in Casio XJ-H1600 32 pieces of diodes?
We do NOT have a spec sheet.

The company will not share info with us

That's why we have top do this kind of investigative work for ourselves

Peace,
dave
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Old 03-12-2012, 05:32 PM #61
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Default Re: A-140 vs. M-140 vs. H1600

It will be quite interesting to see what form factor / package Soraa goes with for 4W diodes. 5.6mm wouldn't be my immediate guess. I would think 9mm a more logical route, or even something non-standard.
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Old 03-12-2012, 05:50 PM #62
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Default Re: A-140 vs. M-140 vs. H1600

Quote:
Originally Posted by rhd View Post
I would be surprised if 4W output required 5-6A of input. Based on the efficiency we're seeing from current Nichia diodes, I would expect more in the neighborhood of 3A input for 4W output.
Well the way I was figuring was right now with most of the boost drivers I have seen it is about ~3A to give 1.8A to the diode. This is generally producing about 2W with the M140. So I just doubled it. It is probably correct to say that we would end up using mostly linear drivers as we are struggling now just to get 1.8A out of boost drivers so that would drop the current draw to around 3.6A if you figure we would drive those diodes twice as hard as the M140.
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Old 03-12-2012, 09:05 PM #63
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Default Re: A-140 vs. M-140 vs. H1600

So if they simply are serial numbers, then I would assume that ones that have similar serial numbers would be made from the same set, so we could probably expect similar results/efficiencies from similarly coded serial numbers?

The reason I say that is that, considering many diodes are made in each set, the number of impurities/etc. is probably about equal on a relative scale for diodes of the same batch as compared to previous or later batches.
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Old 03-12-2012, 09:47 PM #64
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Default Re: A-140 vs. M-140 vs. H1600

Good eye Dave! Thanks for sharing....


Quote:
Originally Posted by Tech_Junkie View Post
If there are 4W diodes, is the battery technology we use going to work? Or are we going to have to use AC sources?
If we ever get a diode that can take 4 Amps, the FlexModP3 will already put out that much current.

It is a linear driver, and using the Feilong 6000mAh 32650's that I have available by the way, they can easily handle 4 Amps...

My Maglite Monster kit will do the job.

In fact, I know the Feilong's can handle over 8 Amps current draw from using them in other builds. (possibly more)
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