Electronics Forum | Wed Aug 20 10:27:25 EDT 2003 | Dan Gosselin
Do any of you guys have a list of parts that cannot survive hanging upside down during reflow soldering. As our board designs become increasingly dense and higher speed, we need to use all available pcb real estate. This means locating parts we hi
Electronics Forum | Thu Sep 11 16:50:18 EDT 2003 | davef
Sure it's conceivable that thin HASL can cause tombstoning. Harkening back to the ample discussion in the fine SMTnet Archives, tombstoning is caused by an imbalance in solder surface tension between the two pads of SMT component. The source of thi
Electronics Forum | Tue Sep 09 20:32:10 EDT 2003 | davef
The maximum ratio of gold weight to solder alloy weight can be calculated, to help prevent a problem from excessive gold-tin intermetallic compound (i.e., AuSn4). For the equation and its derivation, please refer to "The Use of Capillary Action Measu
Electronics Forum | Fri Sep 26 11:38:14 EDT 2003 | slthomas
I'm not sure if I'll get to this next week, and since I'm gone after Tuesday I thought I'd get this out of the way. The Global Economy has gotten the best of this guy. I don't know where I'll land when the dust settles, but you can be sure that if I
Electronics Forum | Mon Oct 06 11:13:32 EDT 2003 | marmotzj
Dear All, I'm encountering a problem on mounting Intel E7501 and P64H2 FC-BGA chips. After the SMT process, these two BGAs were defected. Both had power-to-ground short circuits on the die package itself, and also the die resin had cracking tracks
Electronics Forum | Mon Oct 13 14:30:56 EDT 2003 | jsherrow
Our customer is starting to see some solder joint > failures during their extensive testing > proceedures. Specifically with an SMD/DIP device > that has a very small foot in relationship with > the pad on the PCB. (By SMD/DIP device I mean a >
Electronics Forum | Mon Nov 03 03:20:25 EST 2003 | magdelectronics
Hello Cal, I have left Tempo and started my own business. We manufacture a carrier tape like that of Surftape. Mag-D Electronics Adhesive Back Carrier Tape has a punched Blue Nitto Tape Gap and not two rails. Our Punched Nitto carrier is more acc
Electronics Forum | Fri Oct 24 13:35:11 EDT 2003 | cnotebaert
Ok, I have been trying to purchase a magazine unloader (front of line to load brds into smt equip) from 3 different used equipment manufacturers. I have been hounding them for 4-5 weeks to get me a quote. They all tell me they have them but I have no
Electronics Forum | Thu Dec 04 07:12:00 EST 2003 | ex maintain leader
Hi Mark, I'm ex Fuji smt service engineer, now I'm leading a a team wich repairs pc-boards in Europe. During replacing P4 processor socket I use an old srt-bga rework staion and an mimistencil wich can be placed abowe the bga pads. My 5 Y experience
Electronics Forum | Mon Nov 24 13:45:08 EST 2003 | cyber_wolf
Hello all, We recently implemented a Fuji CP642 into one of our SMT lines. We have a TON of problems with the overlay tape sticking.I have tried everything. I have put on brand new tape covers, bought a tape cover flatness jig, and verified station o
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