Welcome to Laser Pointer Forums - discuss green laser pointers, blue laser pointers, and all types of lasers

LPF Donation via Stripe | LPF Donation - Other Methods

Links below open in new window

ArcticMyst Security by Avery

A-140 vs. M-140 vs. H1600






rhd

rhd

0
Joined
Dec 7, 2010
Messages
8,475
Points
0
Can someone get some data matrices for the old A series diodes?
 
DTR

DTR

0
Joined
Jun 24, 2010
Messages
5,684
Points
113
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.:thinking:


Great photos though.:beer:
 
Last edited:
rhd

rhd

0
Joined
Dec 7, 2010
Messages
8,475
Points
0
Blord said:
I have a close-up of an A140 445 diode,

http://laserpointerforums.com/f48/large-macro-photo-soc-loc-445nm-diode-68441.html
Click to expand...

Thanks. I turned it into a quick a dirty scannable code.

attachment.php


attachment.php


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.
 

Attachments

  • 1.jpg
    1.jpg
    253.4 KB · Views: 1,479
  • 2.jpg
    2.jpg
    36.8 KB · Views: 1,367
Tech_Junkie

Tech_Junkie

0
Joined
Jan 2, 2009
Messages
11,800
Points
0
If there are 4W diodes, is the battery technology we use going to work? Or are we going to have to use AC sources?
 
DTR

DTR

0
Joined
Jun 24, 2010
Messages
5,684
Points
113
Tech_Junkie said:
If there are 4W diodes, is the battery technology we use going to work? Or are we going to have to use AC sources?
Click to expand...

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:
rhd

rhd

0
Joined
Dec 7, 2010
Messages
8,475
Points
0
DTR said:
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.
Click to expand...

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:

http://laserpointerforums.com/f42/collecting-445-diode-qrcodes-serials-72446.html

If I'm right that these are just serial numbers, then this may actually be somewhat useful for tracking diodes.
 
Blord

Blord

0
Joined
Dec 24, 2007
Messages
5,356
Points
0
DTR said:
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.:thinking:


Great photos though.:beer:
Click to expand...

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 :)
 
Tech_Junkie

Tech_Junkie

0
Joined
Jan 2, 2009
Messages
11,800
Points
0
If they are rated 4W, then pushing them to 6W+ should not be an issue.

These are exciting times. :beer:
 
daguin

daguin

0
Joined
Mar 29, 2008
Messages
15,989
Points
113
Zyxel said:
Somebody will help with the specification on the M-series diode?
And still a question - in Casio XJ-H1600 32 pieces of diodes?
Click to expand...

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
 
rhd

rhd

0
Joined
Dec 7, 2010
Messages
8,475
Points
0
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.
 
DTR

DTR

0
Joined
Jun 24, 2010
Messages
5,684
Points
113
rhd said:
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.
Click to expand...

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.:beer:
 
Wolfman29

Wolfman29

0
Joined
Jan 14, 2011
Messages
3,816
Points
63
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.
 
jayrob

jayrob

0
Joined
Sep 21, 2007
Messages
9,862
Points
113
Good eye Dave! Thanks for sharing....


Tech_Junkie said:
If there are 4W diodes, is the battery technology we use going to work? Or are we going to have to use AC sources?
Click to expand...

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)
 
Last edited:
You must log in or register to reply here.




Top