SLD302V

[dyter]

I've found after long recherche the Datasheet (pdf format) of the Sony diode equiped in Leadlight GLP-105/110, this is the Electrical and Optical Characteristics:

Threshold current Typ: 150ma max: 200ma
Operating current Typ: 350ma max: 500ma
Operating voltage Typ: 1.9V max: 3V
Optical power output: 200mw
Operating temperature: –10 to +50 °C
Wavelength SLD302V1: 785 ± 15 V2: 810 ± 10 V3: 830 ± 10
SLD302V-21: 798 ± 3 V-24: 807 ± 3 V-225: 810 ± 3


So, becarefull, when you have 400ma in 3V is in reality 500ma in 2.4V !
I project to remove all electronic circuit of my GLP and work with only 2.4V rechargeable batterie ...

 

[liteglow]

+50 °C no nede for cooling down the dide /ubbthreads/images/graemlins/wink.gif
only the (mca) that need cooling.. and the correct temp.

 

[dyter]

You can download the guide here: http://lasercomponents.de/pdf/sony/sld302v.pdf

 

[LaserMod]

Great work Dyter thats what we've been after for a while.

/ubbthreads/images/graemlins/happy14.gif

At last confirmation! /ubbthreads/images/graemlins/au.gif

 

[dyter]

Thanks /ubbthreads/images/graemlins/wink.gif

The typ specification is 1.9V/350ma (0.665 Watt) and max is 3V/500ma (1.5 Watt)

So the for the Stage 4, I project to remove all circuit components, and make a 2.4V direct source
(2*1.2V recheargeables batteries) for a ~ 400ma to preserve the diode.
And 500ma with standart 3V batterie if I want power /ubbthreads/images/graemlins/smile.gif

Any suggestions ?

 

[DarkLight]

only thing is I measured voltage with my fluke 87 on my AAA rechargeables (energizer 850s) and they were 1.40 fresh off the charger...

 

[dyter]

I realised my project !

36mw and 450ma with nicd 2.4V batteries
43mw and 500ma with old 3V alcaline batteries
750ma with very good alcaline batteries, whoaw don't use !
1.2A the diode warm up /ubbthreads/images/graemlins/frown.gif

don't use Stage 4 because the diode isn't reguled !

 

[Guliver]

It does not say the size of the package in this spec sheet.
I have some Sony SLD302v-2 that are 9mm..
Hopefully the SLD302v-21 is the 5.6mm package..But I believe they are just the tighter wavelength spec'ed diodes.
Just wish they were more specific in the specs with
measurements.
Thanks /ubbthreads/images/graemlins/grin.gif for posting it.
Marconi

 

[liteglow]

i have used a soldered resiston on my leadlihgt (stage4?) and it works out great...
I have done it on 4 lasers.. all working perfect as we speak...

/ubbthreads/images/graemlins/wink.gif

 

[dyter]

Yes but it depend of battery use, with my rechargeable mih i've got lot of ampere and the diode warm up !
For security, I project to make a 2.4V or 2.7V zener diode if you use direct source without regulator circuit.
With regulator circuit the max ouput is 370ma, other the diode isn't regulated due to Voltage limit ...

 

[cbfull]

I hate to say it but this does not bring us any closer to identifying the mystery diode part number. That spec sheet is for the 9.0mm package, which is not the correct diode. The diameter of the package is shown on the last sheet (page 7) and is the overall package diameter. If you look at a spec sheet for a 5.6mm diode there is a clear difference when you get to that page. It looks a little different and the overall width will be marked 5.6mm.

LaserModifier and myself were trying to sort this one out a while back and I guess we sorta got tired of trying to find out where the diode came from. Either Leadlight is lying about the diode being a Sony, or they are a special run of diodes or something that is not available to the general public.

 

[dyter]

Yes, but the caracteristics are similar for a 808nm Sony diode, I'm sure that it a SLD302V-24 or a SLD301V-24 !
I say for many peoples use only the pot mod stage 1 and very good 3V batteries, this get a usefull power
Other Stage is dangerous for the diode and have no extra power signifiently... Stage 3+4 is for experimented only because due to extra voltage and heat.

So I found again more Invisibles Sony Diode products /ubbthreads/images/graemlins/smile.gif :

http://www.photonic-products.com/products/laserdiodes_invisible/sony_invisible.htm

 

[cbfull]

They probably are similar but the larger (9.0mm) package gives it better heat management, so it is probably better to assume that it's performance is not as good as the 302V.

Those Sony diodes use a letter "L" to indicate the smaller package, and so far no one has been able to show any evidence that Sony ever made a diode that could be called SLD302VL. I suspect that the diode is not made by Sony. I am tempted sometimes to call their technical department and see if I can resolve this.

For our purposes, the diode seems to behave the way the 302V sheet describes, which is good enough.

Here is the other thread:
http://www.candlepowerforums.com/ubbthreads/showflat.php?Cat=&Board=lasers&Number=785365&page=16&view=collapsed&sb=5&o=186&fpart=2

 

[LaserMod]

/ubbthreads/images/graemlins/ohgeez.gif not another dead end.

'SLD302VL' hmmm.