Electronics Forum | Fri Feb 18 11:14:07 EST 2005 | russ
I would be willing to bet that you are ramping up way too fast and possibly too hot/long of a soak and killing your flux activity. this will give the appearance of "no reflow" due to non-coalescence of the solder balls. check this board with the hel
Electronics Forum | Thu Nov 17 03:34:51 EST 2005 | cangly
Hi, We have a board with over 100 chips (mixed size) and some long Connector DIP through out Wave solder with many issues of no solder and solder bridge, (using clean flux with bubble fluxer and Kester solder bar). Currently we tried to reduce the de
Electronics Forum | Fri Dec 02 08:57:39 EST 2005 | russ
You hit it on the nose Pavel, the fluxes in paste are formulated to have 2 activating points if you will, one at low temp and one at high temp. when the low temp flux gets killed this is what you will see. This is the main reason we opted out of K
Electronics Forum | Wed Jun 14 05:05:27 EDT 2006 | bk
Yes it's definately possible to have too much flux. You'll see a white residue film on the board. In the past we have had hipot issues cause of too much flux residue ,left on the boards. You defininately don't want to be using a no clean flux and sti
Electronics Forum | Fri Oct 06 04:23:06 EDT 2006 | David
What is the solder finish of the board?. If this is gold, maybe you should check the reflow profile and max temperature which can easely kill your gold coating so problems with bonding. Also we are using Prozone Multicore with ultrasonic to clean
Electronics Forum | Fri Jul 13 12:20:33 EDT 2007 | jdumont
There are a lot of areas that could be leading to this problem. We have some of these issues on some boards with this solder as well but the hole fill still meets IPC class 3 requirement of 75% vertical hole fill. Through hole diameter is important.
Electronics Forum | Thu Aug 02 15:15:52 EDT 2007 | realchunks
Yes I have. Leaded toys, anti-freeze toothpaste, cardboard biscuits, glue-less tires... the list goes on. And it's only about 1/1000th of what is caught. But in China's defense, why not sell this stuff to the U.S.? They boost their economy and ki
Electronics Forum | Tue Jan 29 09:41:52 EST 2008 | d0min0
Hello, we use DataPAQ 6 slots - but after tech guys finally killed their profiler on wave its theirs now last year we used SolderStar neptune, 3-9 slots, but it is too easy to destroy it (4 times in repair...) so finally I started to use SlimKIC 2
Electronics Forum | Mon May 17 16:09:03 EDT 2010 | davemacnemo
Is there anyone out there still using TDK RX11s and interested in sharing experience with a guy that has the dubious distinction of owning 2 of the beasts. They have great potential but stoppages due to parts inspection errors are killing me. Not a
Electronics Forum | Wed Sep 01 11:51:01 EDT 2010 | horvath83
It's a very small series. There's already a decision to redesign the board to get rid of QUAD BGA transformers. We'll replace them with 2x transformers in other packages. We'll also try to order lead-free smaller BGA's on the other side to unify th