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

Buy Site Supporter Role (remove some ads) | LPF Donations

Links below open in new window

FrozenGate by Avery

Mini red diodes

StridAst

StridAst

0
Joined
Oct 23, 2009
Messages
344
Points
0
So, the red diodes in the bdr-205 and bdr-203 sleds are on the small side. Who has any of these kicking around? I've seen several posts telling the size as 3.5 or 3.6 or 3.4mm I'm curious what the exact size is. Can anyone confirm for certain if it's 3.6mm? Also on the same note, does anyone have one they are willing to part with?
 





ZRTMWA

I would appreciate not assuming I haven't read up. I have been reading and searching quite a bit. but I am finding a bit of confusing references....

of the 4 links you posted:

the 4th was written almost an hour after I typed this. So close, but unless I could have predicted the future, then the thread wasn't available. (I assure you I can't predict the future)

The 3rd post has daguin listing it as a 3.6mm diode. and larrydfw in post number 9 listing it as a 3.3mm diode.

The 2nd link is talking about the flat red diodes, even reading through that I am finding difficulty in finding anything substantial about the SmOC diodes...

The First does list them, however given that I have found more then one mm measurement on the size of the SmOC, rather then assume it's 100% accurate, I am looking for info straight from the horses mouth so to speak.

So I ask again, who here has actually measured one. can you confirm it as a 3.6mm for certain? At these sizes, .1 mm is the difference between a snug working fit with what I have in mind for one, and a diode that's too loose to work. Any useful info would be greatly appreciated. Also does anyone have any measurements of the length of the diode from the back to the front (not counting the pins of course)

Thanks in advance
 
StridAst said:
ZRTMWA
I would appreciate not assuming I haven't read up. I have been reading and searching quite a bit. but I am finding a bit of confusing references....
of the 4 links you posted:
the 4th was written almost an hour after I typed this. So close, but unless I could have predicted the future, then the thread wasn't available. (I assure you I can't predict the future)
The 3rd post has daguin listing it as a 3.6mm diode. and larrydfw in post number 9 listing it as a 3.3mm diode.
The 2nd link is talking about the flat red diodes, even reading through that I am finding difficulty in finding anything substantial about the SmOC diodes...
The First does list them, however given that I have found more then one mm measurement on the size of the SmOC, rather then assume it's 100% accurate, I am looking for info straight from the horses mouth so to speak.
So I ask again, who here has actually measured one. can you confirm it as a 3.6mm for certain? At these sizes, .1 mm is the difference between a snug working fit with what I have in mind for one, and a diode that's too loose to work. Any useful info would be greatly appreciated. Also does anyone have any measurements of the length of the diode from the back to the front (not counting the pins of course)
Thanks in advance
Click to expand...

WOW! Buy a BDR-203 or 205 and become part of the solution.

That way you can both have one and measure it for yourself.

Problem solved

Peace,
dave
 
First of all I think the 3.3 mm that Larry DFW referred to was a different diode. He even called it an SOC.

The second link test two different diodes. But you're right, it tests the reds from an 8x LG sled not a Pioneer Drive. Link Deleted!

I only see one measurement in the first link:

nikokapo said:
• 660nm - Red:


BDR-203 & BDR-205 Red Diode:

Manufacturer: Pioneer
Package: ϕ 3,6mm / Small Open Can
Mode: Single
Pinout:

lpc.png


Common designation: SmOC (Small Open Can) ; Not to confuse with SOC (Short Open Can)

And from Sightfx. This is his copperhead module, built so an Aixiz glass or jayrob 650-G-1 lens can be used
Click to expand...

sightfx said:
...

3.8mm%20Module%2003.jpg


Ryan
Click to expand...

You're right though, I'm sorry I assumed that you hadn't read up. I dislike people who assume too much.
 
Last edited:
Lol I apologize for the rant. I am just a little tired of how it seems that so many questions on the forums are treated like the person asking just hasn't done any work to figure them out for themselves, when often someone has, and has found enough out to be wary and wanting to doublecheck. I am very much planning on purchasing either an 8x or 12x drive anyways. The only problem is deciding which. I am waiting on the results of the second 12x murder test before I commit to one or the other drive. As the death of the first has put me off a little on a 12x, add in the need for a higher voltage boost driver also being a problem and I am leaning towards an 8x

In the meantime I have been wanting to find out specific info on this diode, as I have a tiny little module that I have measured at 3.6mm inside diameter. If the SmOC diode is actually this size, then I have a perfect idea and plan for one, which would influence my choice of 8x to the bdr-203 sled, instead of the LG sled.

I believe the 8x murder experiments were/are being performed on 2 LG diodes, which is what left me leaning towards an LG sled so far. Given I can afford to get only one drive to pull apart at this point, finding this data out before I choose between the sleds is kind of important to me.

EDIT: lol you posted while I was typing that.

Thanks for clarifying the 3.3 was a short open can. My apologies there. I thought it was a measurement on a small open can. =/ I plead too many acronyms. Given there seems to be more info saying 3.6mm should I assume that it most definitely IS a 3.6mm?
 
Last edited:
StridAst;

When manufacturers go smaller than the industry standard 5.6 mm can,
there is no consistency.

Sony & Mitsubishi spec sheets use 3.8 mm for their small cans.

Sharp & Sanyo spec sheets use 3.3 mm for their small can.

Sightfx shows 3.6 mm for his heat sink which he machined.

I would have to have the diode on the caliper, before I would state the exact size.

LarryDFW
 
Last edited:
I measured mine at 3.78mm and drilled just under for a tight fit. Nobody has noticed that this diode also emmits 215mW of NIR 780nm as well, or is it just me?

> http://laserpointerforums.com/f50/red-ir-combo-diode-poineer-bdr-205-12x-sled-48417.html


StridAst said:
ZRTMWA

I would appreciate not assuming I haven't read up. I have been reading and searching quite a bit. but I am finding a bit of confusing references....

of the 4 links you posted:

the 4th was written almost an hour after I typed this. So close, but unless I could have predicted the future, then the thread wasn't available. (I assure you I can't predict the future)

The 3rd post has daguin listing it as a 3.6mm diode. and larrydfw in post number 9 listing it as a 3.3mm diode.

The 2nd link is talking about the flat red diodes, even reading through that I am finding difficulty in finding anything substantial about the SmOC diodes...

The First does list them, however given that I have found more then one mm measurement on the size of the SmOC, rather then assume it's 100% accurate, I am looking for info straight from the horses mouth so to speak.

So I ask again, who here has actually measured one. can you confirm it as a 3.6mm for certain? At these sizes, .1 mm is the difference between a snug working fit with what I have in mind for one, and a diode that's too loose to work. Any useful info would be greatly appreciated. Also does anyone have any measurements of the length of the diode from the back to the front (not counting the pins of course)

Thanks in advance
Click to expand...


DSC09959.jpg
 
Last edited:
SO, Joe PM'ed me about the IR part today and I confirmed it with mine. All I was looking for was a red but he found this bonus diode in there!
Like the first Blu diodes with three stacked, this appears to have two diodes stacked. Be careful running both at the same time due to heat conduction considerations.

HMike
 
Last edited:
Are the IR diodes the same in the 8x possibly? Or is there a third diode in those? I read they have the same mini 650nm.

I'm going to make a nice little labby with mine, and see how thin I can get the beam. I would like to make a nice yellow with this having that less pronounced line through the dot.


Flaminpyro said:
O' heck I noticed it I just didn't want o be the first who said so hehehe :rolleyes: :whistle::thinking: :undecided: :toilet:
Click to expand...

I understand why, since I posted my thread, ive had nothing but phone calls and paparazzi at the end of my driveway..
rockstar-rockstar-kiss-gene-simmons-smiley-emoticon-000231-large.gif
 
Last edited:
Going to be testing the fit of a SmOC diode possibly this week into a tiny little module. The module if from a flashlight/red pointer combo. The module has limited use unless you are capable of making your own heatsinks. However there is some potential if it fits. outside dimensions are 6.0 thick by 9.1mm long. inside diameter measures at 3.6mm there is a little room to turn the front to adjust the focus, but not much.. I've checked out two of these flashlights and both had the same brass housing in them.

Personal goal with this module is making a laser watch :D as the heatsink can be flat and just fill up the base of the watch. Other potential would be making a rather thin little host. In both cases battery capacity would be on the limited side. But then that is unavoidable with any miniaturization. (found some 80 x 20 x .6 mm flexible batteries. 40mah at 3.7v lithium rechargeables. I figure 2 in each watch band, wired in parallel gives me 160mah. Or if I can get 3 in each watch band to fit, that would be 240mah. It's not exactly wonderful capacity, but much better then I originally expected. However I need to make certain the diode fits before I start working on trying to get ahead of myself.

The finding that it has an IR diode as well makes me even more curious about these. The measurement of 3.78mm however is not very encouraging, as that would most certainly not fit without machining the module... But I guess the best way to be certain is to see for myself :D

Wannaburn, When you mentioned in the other thread the modules you had from a couple years ago that don't fit a 5.6mm but were meant for flat chip diodes, did they come out of a laser/flashlight combo? It sounds very much like the modules I am talking about. Here is a link to a flashlight on ebay

8 LED + LASER FLASHLIGHT HAND TORCH LIGHT LAMP BRIGHT - eBay (item 140377302428 end time Feb-23-10 10:15:34 PST)

This is different from the original 8 led 1 laser combo I first bought. but both had the same 8 leds around a central laser. I purchased one of those flashlights on ebay to see if it did have the same module, and it does.
 
Last edited:
The modules I had were from red pens that I had got on ebay IIRC. Similar to a dollar store pointer with the flat chip mount.

Im not sure what the inside of that flashlight in the link looks like... But if it uses a flat chip arrangement, it should work all the same.

As long as the mount does not contain a 5.6mm diode, you should be able to drill it to the size you need. Just remember that you seldomly see brass in the cheaper items, and is most likely a brittle metal. Dont try to bend anything or it will snap, even the ones I had, I now have 1 good one and two broken :(
 
Ok, I've measured 2 of these diodes now. One from my own drive, and one from Exerd. Both have measured at 3.73mm at the widest point. It's harder to get an accurate reading on these as the outside diameter seems to be a little out of round. Depending on where you measure it, the measurement has shown 3.70-3.73. Given Wannaburn's useful measurement above of 3.78mm I think we can conclude they are consistently wider then 3.6mm diodes. Mostly useful to know for anyone attempting to machine their own adapter for one prior to seeing one.

sadly the little module I was hoping to use for one is too small without modifying
 
The diodes are 3.8mm so a press fitting for them should be .1 to .2mm smaller than the diode. A 3.6mm hole with a tapered opening is what I machine when doing heat sinks in copper. Pressure = greater thermal conductivity but of course too much pressure = broken diode. - .2mm is the maximum I am comfortable with where - .12 is about perfect.


Thanks,

Ryan
 
You must log in or register to reply here.





Back
Top