Laser pointer discussion. Read/write reviews of laser pointers and laser pointer companies. Learn about all types of laser pointers and lasers





One laser store meets all your needs

Go Back   Laser Pointer Forums - Discuss Laser Pointers > Off-Topic > Other





Reply
 
LinkBack Thread Tools Display Modes
Old 01-21-2017, 07:15 AM #65
Seoul_lasers's Avatar
Class 3R Laser
 
Join Date: Jul 2008
Location: Victoria, British Columbia
Posts: 2,318
Rep Power: 7231
Seoul_lasers has a reputation beyond reputeSeoul_lasers has a reputation beyond reputeSeoul_lasers has a reputation beyond reputeSeoul_lasers has a reputation beyond reputeSeoul_lasers has a reputation beyond reputeSeoul_lasers has a reputation beyond reputeSeoul_lasers has a reputation beyond reputeSeoul_lasers has a reputation beyond reputeSeoul_lasers has a reputation beyond reputeSeoul_lasers has a reputation beyond reputeSeoul_lasers has a reputation beyond repute
Send a message via Skype™ to Seoul_lasers
Seoul_lasers Seoul_lasers is online now
Class 3R Laser
Seoul_lasers's Avatar
 
Join Date: Jul 2008
Location: Victoria, British Columbia
Posts: 2,318
Rep Power: 7231
Seoul_lasers has a reputation beyond reputeSeoul_lasers has a reputation beyond reputeSeoul_lasers has a reputation beyond reputeSeoul_lasers has a reputation beyond reputeSeoul_lasers has a reputation beyond reputeSeoul_lasers has a reputation beyond reputeSeoul_lasers has a reputation beyond reputeSeoul_lasers has a reputation beyond reputeSeoul_lasers has a reputation beyond reputeSeoul_lasers has a reputation beyond reputeSeoul_lasers has a reputation beyond repute
Send a message via Skype™ to Seoul_lasers
Exclamation Re: Soldering thread

Quote:
Originally Posted by Benm View Post
I'm not really sure, at some time gas powered soldering irons were promoted as suitable for electronics here. These were very small ones though, not suitable for large gauge wires at all.

To me they are mostly fieldwork things, if you have no power available you can resort to using them, probably to restore the power in the first place


As for proper soldering solutions go: Don't spend a lot on them if you are just starting up. Things like the really cheap Aoyue soldering stations are actually not that bad as long as you get the proper tips for them.

The smaller chisel shaped bits that come for those are actually pretty good for general electronics work, and could be used to solder laser diodes easily.

Things like solder suckers or smd tweezers are nice, but not required for general assembly work. You don't need them to remove defective components either, but you might when you want to remove non-defective components for re-purposing or something like that.
Those vacuum solder suckers are good for very fast desoldering and repurposing components. Removing ribbon cables from Laser diodes is super simple and very safe with them.
I tried doing an open can from a LG 20x RW (LPC-826) with one last October and got all the solder off in one go barely subjecting the diode to any heating, just to see if I could do it. (it was a dead drive)
I ended up building it into an Aluminum press fit module and giving it to a classmate.


__________________
650nm ~350mW DVD 20x diode RyanSoh3 Class IIIb
650nm ~350mW DVD 22x 3.5mm labby build 2010 Class IIIb
532nm 10mW-15mW DPSS Module IR filtered(S.Korea)RyanSoh3 Class IIIb
450nm CarbonFiber ElectricPlasma build 9mm +6W Class IV
445nm 3.49W pk ~3.15W av. Sinner Cypreus II +DTR 9mm 445nm Class IV
445nm RHD Saber Twins 2.7W ~2.35W pk Class IV
445nm A140 module x2 Maxsink Class IV
405nm Daguin Kryton Groove SO6J 700mW build. Class IV
405nm Olike 560mW-600mW pen sold Scopeguy20
Class IV
337.1nm TEA Nitrogen laser project 2011 Class IIIb
---------------------------------------------------
Die4Drivers 1.3v lab laser/projector driver

Laserbee 3.2W Deluxe LPM
ARGMeter 1.1v
Ophir 20C-A sensor

Peregrine 1.5.0 is working now on MacOSX Yay!!

Last edited by Seoul_lasers; 01-21-2017 at 07:16 AM.
Seoul_lasers is online now   Reply With Quote


















Old 01-22-2017, 01:09 AM #66
Benm's Avatar
Class 4 Laser
 
Join Date: Aug 2007
Location: Netherlands
Posts: 7,495
Rep Power: 29264
Benm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond repute
Benm Benm is online now
Class 4 Laser
Benm's Avatar
 
Join Date: Aug 2007
Location: Netherlands
Posts: 7,495
Rep Power: 29264
Benm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond repute
Default Re: Soldering thread

That's not someting very hard to do though. You could just flow some proper flux core solder onto the flex and rip it off in one go - i've done it before without any problems or damage to the laser diode.

To be honest i have no idea on how hot the laser diode chip got during that, but at least it was not damaged at all. Clamping down the case may also aid taking some heat away if required.

Then again it's not like laser diodes are that sensitive to heat at all when not operating. Heating them up to temperatures that melt proper solder is usually no problem when not powered as long as you work quickly (in 10 seconds or so). And even that is just datasheet guarantees, they may survive much more thermal abuse in practical situations.

I haven't really tried this on laser diodes, but i've had cmos chips and such at far higher temperatures for far to long without damage at all (thing of DIP16 package desoldering using a paint stripper) - obviously under unpowered conditions.

Last edited by Benm; 01-22-2017 at 01:10 AM.
Benm is online now   Reply With Quote
Old 01-22-2017, 02:05 AM #67
Seoul_lasers's Avatar
Class 3R Laser
 
Join Date: Jul 2008
Location: Victoria, British Columbia
Posts: 2,318
Rep Power: 7231
Seoul_lasers has a reputation beyond reputeSeoul_lasers has a reputation beyond reputeSeoul_lasers has a reputation beyond reputeSeoul_lasers has a reputation beyond reputeSeoul_lasers has a reputation beyond reputeSeoul_lasers has a reputation beyond reputeSeoul_lasers has a reputation beyond reputeSeoul_lasers has a reputation beyond reputeSeoul_lasers has a reputation beyond reputeSeoul_lasers has a reputation beyond reputeSeoul_lasers has a reputation beyond repute
Send a message via Skype™ to Seoul_lasers
Seoul_lasers Seoul_lasers is online now
Class 3R Laser
Seoul_lasers's Avatar
 
Join Date: Jul 2008
Location: Victoria, British Columbia
Posts: 2,318
Rep Power: 7231
Seoul_lasers has a reputation beyond reputeSeoul_lasers has a reputation beyond reputeSeoul_lasers has a reputation beyond reputeSeoul_lasers has a reputation beyond reputeSeoul_lasers has a reputation beyond reputeSeoul_lasers has a reputation beyond reputeSeoul_lasers has a reputation beyond reputeSeoul_lasers has a reputation beyond reputeSeoul_lasers has a reputation beyond reputeSeoul_lasers has a reputation beyond reputeSeoul_lasers has a reputation beyond repute
Send a message via Skype™ to Seoul_lasers
Lightbulb Re: Soldering thread

Quote:
Originally Posted by Benm View Post
That's not someting very hard to do though. You could just flow some proper flux core solder onto the flex and rip it off in one go - i've done it before without any problems or damage to the laser diode.

To be honest i have no idea on how hot the laser diode chip got during that, but at least it was not damaged at all. Clamping down the case may also aid taking some heat away if required.

Then again it's not like laser diodes are that sensitive to heat at all when not operating. Heating them up to temperatures that melt proper solder is usually no problem when not powered as long as you work quickly (in 10 seconds or so). And even that is just datasheet guarantees, they may survive much more thermal abuse in practical situations.

I haven't really tried this on laser diodes, but i've had cmos chips and such at far higher temperatures for far to long without damage at all (thing of DIP16 package desoldering using a paint stripper) - obviously under unpowered conditions.
Most of those Laser diodes do not like to be at elevated temps for very long and get quite tempermental even when not in service (bridge wires and cavity mirrors). At any rate a vacuum solder sucker is the most ideal way of removing solder (fastest). If you can afford one of those, I'd get one. Better than fighting with solder braid and safer.
__________________
650nm ~350mW DVD 20x diode RyanSoh3 Class IIIb
650nm ~350mW DVD 22x 3.5mm labby build 2010 Class IIIb
532nm 10mW-15mW DPSS Module IR filtered(S.Korea)RyanSoh3 Class IIIb
450nm CarbonFiber ElectricPlasma build 9mm +6W Class IV
445nm 3.49W pk ~3.15W av. Sinner Cypreus II +DTR 9mm 445nm Class IV
445nm RHD Saber Twins 2.7W ~2.35W pk Class IV
445nm A140 module x2 Maxsink Class IV
405nm Daguin Kryton Groove SO6J 700mW build. Class IV
405nm Olike 560mW-600mW pen sold Scopeguy20
Class IV
337.1nm TEA Nitrogen laser project 2011 Class IIIb
---------------------------------------------------
Die4Drivers 1.3v lab laser/projector driver

Laserbee 3.2W Deluxe LPM
ARGMeter 1.1v
Ophir 20C-A sensor

Peregrine 1.5.0 is working now on MacOSX Yay!!

Last edited by Seoul_lasers; 01-22-2017 at 02:05 AM.
Seoul_lasers is online now   Reply With Quote
Old 01-23-2017, 01:23 AM #68
Benm's Avatar
Class 4 Laser
 
Join Date: Aug 2007
Location: Netherlands
Posts: 7,495
Rep Power: 29264
Benm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond repute
Benm Benm is online now
Class 4 Laser
Benm's Avatar
 
Join Date: Aug 2007
Location: Netherlands
Posts: 7,495
Rep Power: 29264
Benm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond repute
Default Re: Soldering thread

I don't use desoldering braid to get the flex off of diodes at all, just melt all the connections at once with leaded solder. Once liquid just pull it away and it will take most solder with it as you go.

For thermal management it woud be best to have the actual diode case in a vise or similarly large thermal mass to provide adequate cooling. Then again ripping off the flex takes only a second or two with molten solder, probably within the manufacturers thermal profile.

For people new to soldering the only thing i can really recommend is gaining experience. Get some cheapass kits to solder and desolder, and don't worry about destroying something in the process.

Soldering technique is a mostly practical skill. It's not something overly difficult to master at all, but it does take some time and effort. Just get a couple of chinese clock kits and build those, take them apart again etc to get the feel for it.

You might destroy some components in that process, could burn your fingers a couple of times and what not. You will get better at it very quickly though.
Benm is online now   Reply With Quote
Old 01-23-2017, 02:36 AM #69
Seoul_lasers's Avatar
Class 3R Laser
 
Join Date: Jul 2008
Location: Victoria, British Columbia
Posts: 2,318
Rep Power: 7231
Seoul_lasers has a reputation beyond reputeSeoul_lasers has a reputation beyond reputeSeoul_lasers has a reputation beyond reputeSeoul_lasers has a reputation beyond reputeSeoul_lasers has a reputation beyond reputeSeoul_lasers has a reputation beyond reputeSeoul_lasers has a reputation beyond reputeSeoul_lasers has a reputation beyond reputeSeoul_lasers has a reputation beyond reputeSeoul_lasers has a reputation beyond reputeSeoul_lasers has a reputation beyond repute
Send a message via Skype™ to Seoul_lasers
Seoul_lasers Seoul_lasers is online now
Class 3R Laser
Seoul_lasers's Avatar
 
Join Date: Jul 2008
Location: Victoria, British Columbia
Posts: 2,318
Rep Power: 7231
Seoul_lasers has a reputation beyond reputeSeoul_lasers has a reputation beyond reputeSeoul_lasers has a reputation beyond reputeSeoul_lasers has a reputation beyond reputeSeoul_lasers has a reputation beyond reputeSeoul_lasers has a reputation beyond reputeSeoul_lasers has a reputation beyond reputeSeoul_lasers has a reputation beyond reputeSeoul_lasers has a reputation beyond reputeSeoul_lasers has a reputation beyond reputeSeoul_lasers has a reputation beyond repute
Send a message via Skype™ to Seoul_lasers
Wink Re: Soldering thread

Quote:
Originally Posted by Benm View Post
I don't use desoldering braid to get the flex off of diodes at all, just melt all the connections at once with leaded solder. Once liquid just pull it away and it will take most solder with it as you go.

For thermal management it woud be best to have the actual diode case in a vise or similarly large thermal mass to provide adequate cooling. Then again ripping off the flex takes only a second or two with molten solder, probably within the manufacturers thermal profile.

For people new to soldering the only thing i can really recommend is gaining experience. Get some cheapass kits to solder and desolder, and don't worry about destroying something in the process.

Soldering technique is a mostly practical skill. It's not something overly difficult to master at all, but it does take some time and effort. Just get a couple of chinese clock kits and build those, take them apart again etc to get the feel for it.

You might destroy some components in that process, could burn your fingers a couple of times and what not. You will get better at it very quickly though.
Good point... I'm lazy, and prefer solder suckers. I'm addicted to using them as they do such an incredible job. I rather not have to apply much heat to remove solder if I can help it.
__________________
650nm ~350mW DVD 20x diode RyanSoh3 Class IIIb
650nm ~350mW DVD 22x 3.5mm labby build 2010 Class IIIb
532nm 10mW-15mW DPSS Module IR filtered(S.Korea)RyanSoh3 Class IIIb
450nm CarbonFiber ElectricPlasma build 9mm +6W Class IV
445nm 3.49W pk ~3.15W av. Sinner Cypreus II +DTR 9mm 445nm Class IV
445nm RHD Saber Twins 2.7W ~2.35W pk Class IV
445nm A140 module x2 Maxsink Class IV
405nm Daguin Kryton Groove SO6J 700mW build. Class IV
405nm Olike 560mW-600mW pen sold Scopeguy20
Class IV
337.1nm TEA Nitrogen laser project 2011 Class IIIb
---------------------------------------------------
Die4Drivers 1.3v lab laser/projector driver

Laserbee 3.2W Deluxe LPM
ARGMeter 1.1v
Ophir 20C-A sensor

Peregrine 1.5.0 is working now on MacOSX Yay!!
Seoul_lasers is online now   Reply With Quote
Old 01-24-2017, 01:03 AM #70
Benm's Avatar
Class 4 Laser
 
Join Date: Aug 2007
Location: Netherlands
Posts: 7,495
Rep Power: 29264
Benm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond repute
Benm Benm is online now
Class 4 Laser
Benm's Avatar
 
Join Date: Aug 2007
Location: Netherlands
Posts: 7,495
Rep Power: 29264
Benm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond repute
Default Re: Soldering thread

I understand... but looking at datasheets many components can actually tolerate quite a bit of heat over some time when not active. Those figures are also guaranteed ratings, practical survival is often much longer.

For most small packages it really isn't a problem at all, though for larger ones with many pins it can become one.

Then again, how often do you actually remove something like a 40 pin chip when it's not defective already?
Benm is online now   Reply With Quote
Old 01-24-2017, 06:29 AM #71
Seoul_lasers's Avatar
Class 3R Laser
 
Join Date: Jul 2008
Location: Victoria, British Columbia
Posts: 2,318
Rep Power: 7231
Seoul_lasers has a reputation beyond reputeSeoul_lasers has a reputation beyond reputeSeoul_lasers has a reputation beyond reputeSeoul_lasers has a reputation beyond reputeSeoul_lasers has a reputation beyond reputeSeoul_lasers has a reputation beyond reputeSeoul_lasers has a reputation beyond reputeSeoul_lasers has a reputation beyond reputeSeoul_lasers has a reputation beyond reputeSeoul_lasers has a reputation beyond reputeSeoul_lasers has a reputation beyond repute
Send a message via Skype™ to Seoul_lasers
Seoul_lasers Seoul_lasers is online now
Class 3R Laser
Seoul_lasers's Avatar
 
Join Date: Jul 2008
Location: Victoria, British Columbia
Posts: 2,318
Rep Power: 7231
Seoul_lasers has a reputation beyond reputeSeoul_lasers has a reputation beyond reputeSeoul_lasers has a reputation beyond reputeSeoul_lasers has a reputation beyond reputeSeoul_lasers has a reputation beyond reputeSeoul_lasers has a reputation beyond reputeSeoul_lasers has a reputation beyond reputeSeoul_lasers has a reputation beyond reputeSeoul_lasers has a reputation beyond reputeSeoul_lasers has a reputation beyond reputeSeoul_lasers has a reputation beyond repute
Send a message via Skype™ to Seoul_lasers
Default Re: Soldering thread

Quote:
Originally Posted by Benm View Post
I understand... but looking at datasheets many components can actually tolerate quite a bit of heat over some time when not active. Those figures are also guaranteed ratings, practical survival is often much longer.

For most small packages it really isn't a problem at all, though for larger ones with many pins it can become one.

Then again, how often do you actually remove something like a 40 pin chip when it's not defective already?
True enough... Though I would tend to lean more to "the smaller the package the easier it is to overheat." rather than the reverse. The larger the item the greater the thermal mass.

Back to my point,

There is some decent literature on LDs pointing to heating, even while not powered causing micro flaws in the n/p type semiconductor material which can result in catastrophic facet damage
(CFD) a condition resulting in a melting of the mirror facet/ or facet coating thus resulting in a laser diode that undergoes a complete thermal runaway when powered up... and a LED'ed diode.

These can (CFDs) be caused by ESD, thermal shock, reflected laser light ( resulting in cavity re-absorption), too much current... as well as environmental factors including excessive heat (as in soldering).

This is why one must be super careful when desoldering a LD ribbon cable.

I have put a link into this post that many of you will really find interesting.
by ILX Lightwave. Newport Co.

http://assets.newport.com/webDocumen...r_Diode_IX.pdf



__________________
650nm ~350mW DVD 20x diode RyanSoh3 Class IIIb
650nm ~350mW DVD 22x 3.5mm labby build 2010 Class IIIb
532nm 10mW-15mW DPSS Module IR filtered(S.Korea)RyanSoh3 Class IIIb
450nm CarbonFiber ElectricPlasma build 9mm +6W Class IV
445nm 3.49W pk ~3.15W av. Sinner Cypreus II +DTR 9mm 445nm Class IV
445nm RHD Saber Twins 2.7W ~2.35W pk Class IV
445nm A140 module x2 Maxsink Class IV
405nm Daguin Kryton Groove SO6J 700mW build. Class IV
405nm Olike 560mW-600mW pen sold Scopeguy20
Class IV
337.1nm TEA Nitrogen laser project 2011 Class IIIb
---------------------------------------------------
Die4Drivers 1.3v lab laser/projector driver

Laserbee 3.2W Deluxe LPM
ARGMeter 1.1v
Ophir 20C-A sensor

Peregrine 1.5.0 is working now on MacOSX Yay!!

Last edited by Seoul_lasers; 01-24-2017 at 08:52 PM.
Seoul_lasers is online now   Reply With Quote
Old 01-25-2017, 01:08 AM #72
Benm's Avatar
Class 4 Laser
 
Join Date: Aug 2007
Location: Netherlands
Posts: 7,495
Rep Power: 29264
Benm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond repute
Benm Benm is online now
Class 4 Laser
Benm's Avatar
 
Join Date: Aug 2007
Location: Netherlands
Posts: 7,495
Rep Power: 29264
Benm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond repute
Default Re: Soldering thread

Causing small defects in the facets due to overheating (or mechanical stress, esd, etc) can indeed cause COD later.

Most laser diodes are however rated to be at 175C for 10 seconds or something in that order when being soldered.

The safest way to ensure the diode does not get that hot at all is actually to have it gripped in a vise or something similar that makes good thermal contact and has considerable thermal mass.

Doing so ensures you can heat up the pins pretty hot without the actual diode getting overheated. This is especially useful in case-neutral devices where there is no direct connection between pins and body. If there is a pin connected to the body that serves no electrical function, just clip that instead of desoldering as you don't need it anyway.

You do need to be careful about ESD with such devices though.
Benm is online now   Reply With Quote
Reply





Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On











Loading
















Privacy Policy | Advertising Disclaimer | Terms of Use


 


All times are GMT. The time now is 09:47 PM.


Powered by: vBulletin
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.
Search Engine Friendly URLs by vBSEO
Privacy Policy | Advertising Disclaimer | Terms of Use
Copyright (C) 2017 Laser Pointer Forums, LLC