Electronics Forum | Wed Jan 21 13:48:16 EST 2009 | smt_guy
hi davef, good idea! run one sample and see waht happens with the solderability. yeah we received them good and just happened after 45 days in our stock room. I suspect that during the HAL process some parts of the vias with epoxy fillings were no
Electronics Forum | Tue Mar 25 12:08:53 EDT 2008 | ludee_circuits
My factory produces Printed Circuits Boards.Today, my customer says they encounter problem with solder ability issue. Some of the boards have difficulties during SMT solder flow. Could not stick to the pads and the components fell off. Those boards
Electronics Forum | Tue Jan 20 11:54:12 EST 2009 | smt_guy
Is this Corrosion? We found our boards with this issue 45 days after they were delivered to us from supplier. The board finish is HAL Leaded. But I noticed that the corrosion like issues are coming form the tiny via holes with SILVER EPOXY FILLING.
Electronics Forum | Tue Jan 20 17:51:24 EST 2009 | davef
We'd guess that since your board fabricator could not remove this stuff with it's HAL-leaded process, you're unlikely to remove it with your soldering process that is likely to be pansy-ass compared to your fabricator HAL process. Hey, why not run a
Electronics Forum | Tue May 20 07:55:27 EDT 2014 | andrzej
Hi, I am facing an issue with PB-free HAL on our boards (270 pcs of 800pcs lot). I look for a root couse for this issue and I guess it is strongly related with PCB manufacturing process. In attachment you can see PCB with dark pads. They turned grey
Electronics Forum | Fri Mar 10 14:44:22 EST 2000 | NickMata
Stuart, Pathway Sales Group 408) 779-0358 Hal Hendrickson Also SurPass Technologies Limited Declan Kennedy 353 91 773274 declan.kennedy@Surpass-tech.com Hope this helps
Electronics Forum | Fri Mar 10 14:44:22 EST 2000 | NickMata
Stuart, Pathway Sales Group 408) 779-0358 Hal Hendrickson Also SurPass Technologies Limited Declan Kennedy 353 91 773274 declan.kennedy@Surpass-tech.com Hope this helps
Electronics Forum | Sun Oct 11 13:45:21 EDT 1998 | Vincenzo Longobardo
Dear Park Kyung Sam, your problem can be solved asking to your PCB supplier to cover all the via holes with solder mask before the HAL. Usually this is possible and doesn't produce extra cost. Vincenzo Longobardo vinlong@tin.it
Electronics Forum | Mon Apr 04 22:07:15 EDT 2005 | Dhanish
Questions and answers - what Column pitch do your CCGA have ? a) 1,27 mm?b) 1.00 mm? 1.27mm - how are the PCB pad finisched ? OSP Enig? HAL? OSP - Are you using Clean or NC solder paste? Clean
Electronics Forum | Tue May 31 10:58:31 EDT 2005 | davef
There are a host of possibilities. Virtually any fabrication process prior to outer layer manufacturing prior to HAL could contribute to dewetting. That goes all the way to excessive brighteners in the copper plating line. Anything that prevents the
