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





Welcome to Laser Pointer Forums! If you are looking for a laser pointer or want to compare different laser pointer companies, you may want to check out the LPF Laser Pointer Company Database. The link will open in a new window for your convenience.








Green Laser Pointers by Category Blue Laser Pointers by Category Red Laser Pointers by Category
Yellow Laser Pointers by Category Violet Laser Pointers by Category Orange Laser Pointers by Category
Top Laser Pointers by Power - 1 Watt+ Top Laser Pointers by Power - 500mW+ Top Laser Pointers by Power - 250mW+
Laser Pointer Database High Power Laser Pointers Laser Pointer Diodes
Laser Technology Laser Pointer Parts Lasers by Wavelength
Top 10 Laser Pointer Companies Laser Pointer Company Database Visible Beam Laser Pointers


One laser store meets all your needs

























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



LPF List of Laser Pointer Companies (link opens new window)



Reply
 
LinkBack Thread Tools Display Modes
Old 09-29-2008, 10:52 PM #1
Class 2M Laser
 
Join Date: Aug 2008
Location: Canada
Posts: 711
Rep Power: 62
digital_blue has a reputation beyond reputedigital_blue has a reputation beyond reputedigital_blue has a reputation beyond reputedigital_blue has a reputation beyond reputedigital_blue has a reputation beyond reputedigital_blue has a reputation beyond reputedigital_blue has a reputation beyond reputedigital_blue has a reputation beyond reputedigital_blue has a reputation beyond reputedigital_blue has a reputation beyond reputedigital_blue has a reputation beyond repute
digital_blue digital_blue is offline
Class 2M Laser
 
Join Date: Aug 2008
Location: Canada
Posts: 711
Rep Power: 62
digital_blue has a reputation beyond reputedigital_blue has a reputation beyond reputedigital_blue has a reputation beyond reputedigital_blue has a reputation beyond reputedigital_blue has a reputation beyond reputedigital_blue has a reputation beyond reputedigital_blue has a reputation beyond reputedigital_blue has a reputation beyond reputedigital_blue has a reputation beyond reputedigital_blue has a reputation beyond reputedigital_blue has a reputation beyond repute
Default New to SMT soldering

I've been doing standard thru-hole soldering for years now and I've decided to move onto the once seemingly impossible SMT.

What kind of iron is required? I'm not looking for anything fancy like a rework station and such... Should I be getting a simple adjustable temp station or would a regular "plug-in-wall" be sufficient? Would a 0.4 tip work for TSOP, SOIC and QFN stuff?

I have also looked into reflow soldering with an oven as a viable alternative to soldering the individual components. Are there any limitations to this method (frying chips and such)?

thanks



digital_blue is offline   Reply With Quote







LPF List of Laser Pointer Companies (link opens new window)







Old 09-29-2008, 11:06 PM #2
JLSE's Avatar
A.R Coated Madman
 
Join Date: Dec 2007
Location: ɯɐǝq ssɐ-ǝʇıɹq ǝɥʇ puıɥǝq
Posts: 3,587
Rep Power: 716
JLSE has a reputation beyond reputeJLSE has a reputation beyond reputeJLSE has a reputation beyond reputeJLSE has a reputation beyond reputeJLSE has a reputation beyond reputeJLSE has a reputation beyond reputeJLSE has a reputation beyond reputeJLSE has a reputation beyond reputeJLSE has a reputation beyond reputeJLSE has a reputation beyond reputeJLSE has a reputation beyond repute
JLSE JLSE is offline
A.R Coated Madman
JLSE's Avatar
 
Join Date: Dec 2007
Location: ɯɐǝq ssɐ-ǝʇıɹq ǝɥʇ puıɥǝq
Posts: 3,587
Rep Power: 716
JLSE has a reputation beyond reputeJLSE has a reputation beyond reputeJLSE has a reputation beyond reputeJLSE has a reputation beyond reputeJLSE has a reputation beyond reputeJLSE has a reputation beyond reputeJLSE has a reputation beyond reputeJLSE has a reputation beyond reputeJLSE has a reputation beyond reputeJLSE has a reputation beyond reputeJLSE has a reputation beyond repute
Default Re: New to SMT

I recently started with surface mount boards. Its a bit of a pain but worth the size reduction. I use a basic adjustable soldering iron. I went to my local surplus guy and picked up the finest point tip I could find, and .015 super thin solder with resin core. I tried a surface mount project before getting the smaller tip, but it took way too long to assemble the board >

link to that project - http://www.laserpointerforums.com/fo...m=1210808350/0
__________________
Recent Projects:
-----
JLSE is offline   Reply With Quote
Old 09-30-2008, 05:49 PM #3
rkcstr's Avatar
Class 3R Laser
 
Join Date: Dec 2007
Posts: 1,368
Rep Power: 142
rkcstr has a reputation beyond reputerkcstr has a reputation beyond reputerkcstr has a reputation beyond reputerkcstr has a reputation beyond reputerkcstr has a reputation beyond reputerkcstr has a reputation beyond reputerkcstr has a reputation beyond reputerkcstr has a reputation beyond reputerkcstr has a reputation beyond reputerkcstr has a reputation beyond reputerkcstr has a reputation beyond repute
rkcstr rkcstr is offline
Class 3R Laser
rkcstr's Avatar
 
Join Date: Dec 2007
Posts: 1,368
Rep Power: 142
rkcstr has a reputation beyond reputerkcstr has a reputation beyond reputerkcstr has a reputation beyond reputerkcstr has a reputation beyond reputerkcstr has a reputation beyond reputerkcstr has a reputation beyond reputerkcstr has a reputation beyond reputerkcstr has a reputation beyond reputerkcstr has a reputation beyond reputerkcstr has a reputation beyond reputerkcstr has a reputation beyond repute
Default Re: New to SMT

A temp controlled iron would be good (one that actually monitors temp, not just "watts&quot.

This one actually looks pretty nice for the price:
http://www.radioshack.com/product/in...entPage=family

You just have to purchase extra tips online (the manufacturer is Madell, according to reviews).

As for reflow, that's what I do with the drivers I make and it works great. I just have a cheap counter-top oven I bought from Walmart. You just have to be careful of the temp, as most components say reflow no more than 260C for 30 seconds. My oven's settings peak around 200C, which works just fine. The settings on it are probably not entirely accurate, but more importantly, you need to follow a certain procedure of heating with four phases:

1. warm up, slowly heating the components up and drying the solder paste
2. saturation, bringing the paste to close to melting point
3. reflow, phase where you turn the temp up paste the melting point triggering reflow (should be almost immediate after the 2nd phase). Hold for 30 seconds.
4. cool down. I usually at this point remove the boards from the oven and quickly cool by lightly blowing on them (too hard and you might blow the components off if the solder is still "wet&quot, not just let them cool in the oven.

This is pretty much the routine I follow:
http://www.seattlerobotics.org/encod...6/oven_art.htm

Also, you must not be too liberal with the solder paste. Too much and things will tend to float around on the board during reflow, too little and you'll end up with poor bonds (mechanically and electrically).
__________________
Laser drivers and Test Loads - rkcstr.com

Enter discount code "LPF" during checkout to save 10% off of the regular prices!
rkcstr is offline   Reply With Quote
Old 10-03-2008, 12:13 AM #4
Class 2M Laser
 
Join Date: Aug 2008
Location: Canada
Posts: 711
Rep Power: 62
digital_blue has a reputation beyond reputedigital_blue has a reputation beyond reputedigital_blue has a reputation beyond reputedigital_blue has a reputation beyond reputedigital_blue has a reputation beyond reputedigital_blue has a reputation beyond reputedigital_blue has a reputation beyond reputedigital_blue has a reputation beyond reputedigital_blue has a reputation beyond reputedigital_blue has a reputation beyond reputedigital_blue has a reputation beyond repute
digital_blue digital_blue is offline
Class 2M Laser
 
Join Date: Aug 2008
Location: Canada
Posts: 711
Rep Power: 62
digital_blue has a reputation beyond reputedigital_blue has a reputation beyond reputedigital_blue has a reputation beyond reputedigital_blue has a reputation beyond reputedigital_blue has a reputation beyond reputedigital_blue has a reputation beyond reputedigital_blue has a reputation beyond reputedigital_blue has a reputation beyond reputedigital_blue has a reputation beyond reputedigital_blue has a reputation beyond reputedigital_blue has a reputation beyond repute
Default Re: New to SMT soldering

Thanks for all the info guys.

What would be the easiest way to solder a "10SON" QFN package? Should I be using reflow or should I solder it manually? Also, what do you guys use to dispense your solder paste? From what I've seen, it's applied with a needle of some sort... I've also heard that flux can be made from violin rosin dissolved in isopropyl alcohol. Any truth to this?

thanks
digital_blue is offline   Reply With Quote
Old 10-03-2008, 12:16 AM #5
JLSE's Avatar
A.R Coated Madman
 
Join Date: Dec 2007
Location: ɯɐǝq ssɐ-ǝʇıɹq ǝɥʇ puıɥǝq
Posts: 3,587
Rep Power: 716
JLSE has a reputation beyond reputeJLSE has a reputation beyond reputeJLSE has a reputation beyond reputeJLSE has a reputation beyond reputeJLSE has a reputation beyond reputeJLSE has a reputation beyond reputeJLSE has a reputation beyond reputeJLSE has a reputation beyond reputeJLSE has a reputation beyond reputeJLSE has a reputation beyond reputeJLSE has a reputation beyond repute
JLSE JLSE is offline
A.R Coated Madman
JLSE's Avatar
 
Join Date: Dec 2007
Location: ɯɐǝq ssɐ-ǝʇıɹq ǝɥʇ puıɥǝq
Posts: 3,587
Rep Power: 716
JLSE has a reputation beyond reputeJLSE has a reputation beyond reputeJLSE has a reputation beyond reputeJLSE has a reputation beyond reputeJLSE has a reputation beyond reputeJLSE has a reputation beyond reputeJLSE has a reputation beyond reputeJLSE has a reputation beyond reputeJLSE has a reputation beyond reputeJLSE has a reputation beyond reputeJLSE has a reputation beyond repute
Default Re: New to SMT soldering

Quote:
Originally Posted by digital_blue
Thanks for all the info guys.

Also, what do you guys use to dispense your solder paste?

thanks

I use my index finger :-/ or the old dip the solder in the paste. But I dont use any other method of soldering other than a decent iron
__________________
Recent Projects:
-----
JLSE is offline   Reply With Quote
Old 10-03-2008, 02:07 AM #6
rkcstr's Avatar
Class 3R Laser
 
Join Date: Dec 2007
Posts: 1,368
Rep Power: 142
rkcstr has a reputation beyond reputerkcstr has a reputation beyond reputerkcstr has a reputation beyond reputerkcstr has a reputation beyond reputerkcstr has a reputation beyond reputerkcstr has a reputation beyond reputerkcstr has a reputation beyond reputerkcstr has a reputation beyond reputerkcstr has a reputation beyond reputerkcstr has a reputation beyond reputerkcstr has a reputation beyond repute
rkcstr rkcstr is offline
Class 3R Laser
rkcstr's Avatar
 
Join Date: Dec 2007
Posts: 1,368
Rep Power: 142
rkcstr has a reputation beyond reputerkcstr has a reputation beyond reputerkcstr has a reputation beyond reputerkcstr has a reputation beyond reputerkcstr has a reputation beyond reputerkcstr has a reputation beyond reputerkcstr has a reputation beyond reputerkcstr has a reputation beyond reputerkcstr has a reputation beyond reputerkcstr has a reputation beyond reputerkcstr has a reputation beyond repute
Default Re: New to SMT soldering

Never tried a QFN, but some people here use them. I know IgorT uses a chip like that on his drivers, you could ask him how he does it.

As for reflow, I'm sure it would work. If the pins are small, you can just spread a thin layer of paste across the pads and it should conform to the pad shape when reflowed, though you should always check for shorts afterward (especially when using a PCB without soldermask).

For me, I use a syringe with a short, blunt needle tip. I typically use a 23ga needle, though it does get difficult to get out occasionally and requires cleaning. In the US, you can buy these items from here:

http://www.smallparts.com/

For flux, I would suggest getting an electronics formulated paste. NEVER use plumber's flux or any acid-flux! I particularly like the "rosin flux pen" I have from MG Chemicals. It's a thin flux that comes in a pen style dispenser with a fibrous tip which allows you to apply a thin layer where needed.


__________________
Laser drivers and Test Loads - rkcstr.com

Enter discount code "LPF" during checkout to save 10% off of the regular prices!
rkcstr is offline   Reply With Quote
Old 10-03-2008, 02:31 AM #7
JLSE's Avatar
A.R Coated Madman
 
Join Date: Dec 2007
Location: ɯɐǝq ssɐ-ǝʇıɹq ǝɥʇ puıɥǝq
Posts: 3,587
Rep Power: 716
JLSE has a reputation beyond reputeJLSE has a reputation beyond reputeJLSE has a reputation beyond reputeJLSE has a reputation beyond reputeJLSE has a reputation beyond reputeJLSE has a reputation beyond reputeJLSE has a reputation beyond reputeJLSE has a reputation beyond reputeJLSE has a reputation beyond reputeJLSE has a reputation beyond reputeJLSE has a reputation beyond repute
JLSE JLSE is offline
A.R Coated Madman
JLSE's Avatar
 
Join Date: Dec 2007
Location: ɯɐǝq ssɐ-ǝʇıɹq ǝɥʇ puıɥǝq
Posts: 3,587
Rep Power: 716
JLSE has a reputation beyond reputeJLSE has a reputation beyond reputeJLSE has a reputation beyond reputeJLSE has a reputation beyond reputeJLSE has a reputation beyond reputeJLSE has a reputation beyond reputeJLSE has a reputation beyond reputeJLSE has a reputation beyond reputeJLSE has a reputation beyond reputeJLSE has a reputation beyond reputeJLSE has a reputation beyond repute
Default Re: New to SMT soldering

The package for the chip im using is the 6 llp. It has no legs only small concealed pads. Its the small black IC in the pic below. I solder just fine with a fine tip, and regular paste. The only changes I had made, was to add extentions to the traces on the board where needed.

__________________
Recent Projects:
-----
JLSE is offline   Reply With Quote
Old 10-03-2008, 02:56 AM #8
lasersbee's Avatar
Class 4 Laser
 
Join Date: Sep 2008
Location: Quebec, Canada
Posts: 15,694
Rep Power: 39627
lasersbee has a reputation beyond reputelasersbee has a reputation beyond reputelasersbee has a reputation beyond reputelasersbee has a reputation beyond reputelasersbee has a reputation beyond reputelasersbee has a reputation beyond reputelasersbee has a reputation beyond reputelasersbee has a reputation beyond reputelasersbee has a reputation beyond reputelasersbee has a reputation beyond reputelasersbee has a reputation beyond repute
lasersbee lasersbee is online now
Class 4 Laser
lasersbee's Avatar
 
Join Date: Sep 2008
Location: Quebec, Canada
Posts: 15,694
Rep Power: 39627
lasersbee has a reputation beyond reputelasersbee has a reputation beyond reputelasersbee has a reputation beyond reputelasersbee has a reputation beyond reputelasersbee has a reputation beyond reputelasersbee has a reputation beyond reputelasersbee has a reputation beyond reputelasersbee has a reputation beyond reputelasersbee has a reputation beyond reputelasersbee has a reputation beyond reputelasersbee has a reputation beyond repute
Default Re: New to SMT soldering

Nice clean job wannaburn... and only with an Iron... :P
Old school is a good thing. ;D ;D ;D
__________________

J.BAUER Electronics Home Page

LaserBee Laser Power Meter Products meet your needs
at affordable Prices:
See them all here on LPF

LaserBee Power Meter products ALWAYS in Stock
and ready to ship

Also available on eBay:Check availability here..

Subsidary: Pharma Electronic Solutions


This banner is available to and can be copied/used FREE by any LaserBee owner
lasersbee is online now   Reply With Quote
Old 10-03-2008, 03:03 AM #9
JLSE's Avatar
A.R Coated Madman
 
Join Date: Dec 2007
Location: ɯɐǝq ssɐ-ǝʇıɹq ǝɥʇ puıɥǝq
Posts: 3,587
Rep Power: 716
JLSE has a reputation beyond reputeJLSE has a reputation beyond reputeJLSE has a reputation beyond reputeJLSE has a reputation beyond reputeJLSE has a reputation beyond reputeJLSE has a reputation beyond reputeJLSE has a reputation beyond reputeJLSE has a reputation beyond reputeJLSE has a reputation beyond reputeJLSE has a reputation beyond reputeJLSE has a reputation beyond repute
JLSE JLSE is offline
A.R Coated Madman
JLSE's Avatar
 
Join Date: Dec 2007
Location: ɯɐǝq ssɐ-ǝʇıɹq ǝɥʇ puıɥǝq
Posts: 3,587
Rep Power: 716
JLSE has a reputation beyond reputeJLSE has a reputation beyond reputeJLSE has a reputation beyond reputeJLSE has a reputation beyond reputeJLSE has a reputation beyond reputeJLSE has a reputation beyond reputeJLSE has a reputation beyond reputeJLSE has a reputation beyond reputeJLSE has a reputation beyond reputeJLSE has a reputation beyond reputeJLSE has a reputation beyond repute
Default Re: New to SMT soldering

It just seems less complicated this way
And the more you make, the less time it takes
It would be nice if these IC's had legs, I would be scratching my head a lot less
__________________
Recent Projects:
-----
JLSE is offline   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








Green Laser Pointers by Category Blue Laser Pointers by Category Red Laser Pointers by Category
Yellow Laser Pointers by Category Violet Laser Pointers by Category Orange Laser Pointers by Category
Top Laser Pointers by Power - 1 Watt+ Top Laser Pointers by Power - 500mW+ Top Laser Pointers by Power - 250mW+
Laser Pointer Database High Power Laser Pointers Laser Pointer Diodes






Privacy Policy | Advertising Disclaimer | Terms of Use


 


All times are GMT. The time now is 09:39 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