Electronics Forum | Fri Sep 02 09:02:10 EDT 2005 | dougs
you tell me, the customer has started to pull at some of the leads of some IC's with tweezers while de-bugging boards that had failed in the field, he was able to pull some of the leads away from the solder joints, we feel he may be over-doing it a
Electronics Forum | Mon Aug 04 23:25:28 EDT 2014 | madhuranatha
Let me thank you for the reply. We are manufacturing products which are fitted on the aircraft. We are using SN63Pb37 solder paste for PCB assembly. Of late one of the solder paste supplier recommended SnPbAg for better solder-ability & reliabi
Electronics Forum | Mon Aug 04 23:27:05 EDT 2014 | madhuranatha
Let me thank you for the reply. We are manufacturing products which are fitted on the aircraft. We are using SN63Pb37 solder paste for PCB assembly. Of late one of the solder paste supplier recommended SnPbAg for better solder-ability & reliabi
Electronics Forum | Wed Sep 07 10:41:24 EDT 2005 | D.B. Cooper
We've seen the same thing - leads of QFPs not as strong as we'd like them to be. In the past 4 years no problem, this Spring they start failing. Touch a solder iron to it and it solders fine. After crunching some data, we found that both QFPs fail
Electronics Forum | Wed May 29 08:43:12 EDT 2002 | zanolli
Various solder metal supplies sell pre-forms as loose individual shapes, usually donuts. The loose performs then are placed on the connector leads. If you have any volume at all, you would want to look at a �shake table� that would vibrate a batch of
Electronics Forum | Thu Feb 08 09:07:22 EST 2001 | Hussman
OK, without knowing the specifics, why does everyone blame the oven? Most solder balls occur around R's and C's in almost every shop I've been to. The best place to start looking is the screen printer - not the oven. Sure the oven is the last proc
Electronics Forum | Thu Jul 12 10:32:59 EDT 2001 | Hussman
Wow, what a string of answers and nobody brought up the easiest way to eliminate solder balls. Yes, the paste being squished under the part does reflow and work it's way out to the side during reflow. I did a 5 week study on this (when I was a bori
Electronics Forum | Tue May 09 09:07:46 EDT 2006 | eyryren
C/O general manager Dear Sir This is Shenzhen comofaje Tech.co.,Ltd from China mainland We are the Associator of Hi-tech industry Association, so I think we can become your supplier in China. Now we have Four series products:1 SMT stencil wiping ro
Electronics Forum | Mon Jul 14 22:40:45 EDT 2008 | edmaya33
hello Dave, thanks for the references. i will try to compare the results in 3 months interval.