Electronics Forum | Fri Feb 17 14:11:32 EST 2012 | tkotwal
I'm also looking for tips for SMT hand soldering with Sn05Pb93.5Ag1.5. Our technician is quite good with standard SMT hand soldering, but hasn't worked with HMP solder. Some specific questions: - If the iron tip is hot enough (consistently), can we
Electronics Forum | Mon Sep 12 05:43:53 EDT 2011 | aungthura
Hi All We have run the Hast Burn-in-Board into 2 soldering Process,first-Reflow and second-Wave. After wave soldering, there are many insufficient solder in the via holes.The via holes are wide as 15mil. Then, as customer's request, we have to cover
Electronics Forum | Thu Mar 29 02:46:25 EDT 2012 | johndoe0222
My company is doing a project with a lot of QFN. The question that we are not sure is how to properly solder a QFN on a PCB. QA says The alignment tab on the side of the QFN should have a physical solder from the board, like a leaded chip. After refl
Electronics Forum | Mon Apr 02 17:25:53 EDT 2012 | tombstonesmt
Just PM'd our Pillarhouse Jade Mark II this morning and found excessive solder balls all over the solder pot as well as the bottom of the machine. While removing all the dross it's very obvious that the dross is a REAL fine powder unlike any of the o
Electronics Forum | Mon Jun 11 17:47:54 EDT 2012 | tombstonesmt
Pete B *We do lines of soldering @ 10mm/sec *Similar solder balls were present on product after soldering. *UPDATE SOLUTION* We began using topside preheat while fluxing the board to reduce the thermal shock factor in addition to replacing the "fi
Electronics Forum | Thu May 10 22:16:51 EDT 2012 | davef
It's bad practice to remix used solder paste with new solder paste in the jar. Further, some would argue that it's bad practice to reuse solder paste period. If economics force you to reuse solder paste, store it for reuse in an empty jar. When rea
Electronics Forum | Wed Jun 13 06:42:14 EDT 2012 | brettrenishaw
We have a problem with our Unleaded wave solder machine only randomly soldering some pads. I have looked at the flux level and that appears fine aswell as cheking the preheat and solder height in the bath. The probelm is not exclusive to one perticul
Electronics Forum | Tue Dec 11 11:59:00 EST 2012 | sarason
The issue is surface tension around the connector. Your tip needs to have more surface tension than the pins of the connector as it forms a cluster when being soldered. When I used to solder superfine connectors with a metcal iron it had a horses hoa
Electronics Forum | Mon May 06 12:20:09 EDT 2013 | davef
Gold in solder alloys can be brittle. We always used to talk about keeping gold LT 3% in order to avoid embrittlement. Some military contracts require removal of gold from soldered contacts. Adding gold to a solder alloy that you're familiar with wi
Electronics Forum | Mon Jun 10 13:31:29 EDT 2013 | emeto
Is there anything on the other side of the board? If not the process will be very standard. 1. SMT - place the small parts on your board. It is called surface mount technology. Basically one machine applies solder paste on the board, another machine
