Electronics Forum | Wed Jun 25 11:24:20 EDT 2008 | namruht
I do not have a lot of specs at the moment. I just wanted to get some opinions and some of you thinking. I will get some part specs and add to this post later. WE are running a pretty big PCB and ther are some connectors on the edge of the board. T
Electronics Forum | Fri Apr 10 15:59:51 EDT 1998 | Justin Medernach
| We are having a bridging problem with SOIC 14,16 and 20 pin devices during flow solder of the bottom side of our boards. This bridging occurs about half way up the lead between the board and the body of the IC. The chip parts are no problem. The
Electronics Forum | Sat Jun 25 09:26:43 EDT 2005 | mskler
What is stencil thickness & what is the pitch of your component.What is your cleaning processor for stencil.
Electronics Forum | Mon Jun 27 09:35:24 EDT 2005 | russ
What is the viscosity of your lead free paste vs. your lead paste?
Electronics Forum | Tue Jun 28 10:01:24 EDT 2005 | mskler
What is your stencil cleaning procesor.It sould not be wet after cleaning & what is room tempreture.?
Electronics Forum | Mon Dec 06 06:06:44 EST 1999 | Glen brian
Recently, my plant met the problem of bridging, a metallic link, lying on the solder mask and joining nearby joints. It is very diffcult to observe by our inspector and may be only discovered with ICT testing. This defect ocurrs randomly around the
Electronics Forum | Mon Dec 06 09:28:11 EST 1999 | Dave F
Glen: So that's this metal? Is it in the area of PTH or SMT solder connections? Etc, Etc. Assuming its near connections where pasted is reflowed ... Reflow defects, bridging: misplaced components, high placement force mushrooms paste, too much p
Electronics Forum | Thu Dec 09 04:53:36 EST 1999 | Glen brain
Hi, It is wavesoldering defect, in single- sided copper board, using alcohol-based rosin flux. It is not a bridging between the protruding leads but a metallic (I think, it is solder) link, varies in dia./thickness, connected the basement of solde
Electronics Forum | Thu Aug 12 18:43:49 EDT 1999 | Wayne S.
Hello Having a problem with bridging on 20mil pitch qfp, only on the lead groups where squeegee goes over width of apertures. Using MPM sp-200 semi-auto, chem-etch stencil, 9-10mil width opening 100 durometer blade. Getting "tails" on deposits. Trie
Electronics Forum | Sat Jun 25 00:52:31 EDT 2005 | ktron
Hi all, Recently I had problem with printing the lead free solder paste, almost every board has bridging especially on the fine pitch locations. Anyway this problem never happens when we use leaded solder paste. So I would like to ask if there are a
