Electronics Forum | Sat Feb 04 23:09:00 EST 2012 | jorge_quijano
Thanks for the info, I will check tolerances and the quadaling option. As an update I ran this past week and machine was arround 5% for a very small lot size, for a larger size lot it was less than 2%, Now I know it still higher than our newest machi
Electronics Forum | Fri May 15 08:04:32 EDT 2009 | rwyman
higher temp/shorter time). Solder mask may be a factor as well. I've seen parts get knocked off where the glue is still affixed to the part, along with a nice piece of solder mask from the board. If you can knock a part off with casual contact, th
Electronics Forum | Mon May 11 16:23:08 EDT 2009 | jorge_quijano
Yes, this is for a double sided board, (bottom) the issue is that the board has a lot af hand ion components before wave soldering, and some components are falling off within this process, even if I hit the 0603s with my finger It falls.
Electronics Forum | Fri May 15 09:41:58 EDT 2009 | cyber_wolf
Use loctite chipbonder and forget about all this pull testing. I know that Loctite works good because it pulls a chunk of solder mask off the board when you push a part off.
Electronics Forum | Mon May 11 12:50:55 EDT 2009 | stepheniii
What is the purpose of glueing it? If it is glue the bottom side parts followed by reflowing the top side parts followed by wave soldering the bottom side parts, then it's easy to measure. Hold the board with the 0603s facing down. If they don't f
Electronics Forum | Sat Nov 08 07:05:12 EST 2008 | davef
Often, your solder paste supplier provides guideline on handling their solder paste. For instance: http://www.aimsolder.com/techarticles/tech%20sheet%20paste%20handling.pdf We have no relationship, nor receive benefit from the company referenced ab
Electronics Forum | Fri Nov 07 23:40:41 EST 2008 | padawanlinuxero
I have been working on the SMT area for a while now, must of my experience is on programming and pick and place, now in my new job I have to control a complete SMT line and I have a little knowledge on working with solder paste but I like to read mor
Electronics Forum | Tue Aug 12 19:18:34 EDT 2008 | arminski
Hi davef, couple of questions: clarifying costing of direct labor against overhead cost: an operator loading PCB onto the reflow oven is a direct cost, how about the reflow process time of the PCB while travelling inside the reflow, is that an ove
Electronics Forum | Thu Jun 02 07:13:43 EDT 2011 | cyber_wolf
Things of this nature make us raise an eyebrow. Something along the lines of automatic solder paste mixers......
Electronics Forum | Mon Sep 22 04:59:10 EDT 2008 | fadzil66
I have concern about cleaning solder ball after misprinting paste on PCB, currently use vigon 200 with ultrasonic generate but only 70% solder ball able to remove, Any other method or equipment can help to clean solder ball.
