Electronics Forum | Mon May 10 16:37:01 EDT 2004 | davef
First some definitions, the two main types for solder masking near BGA pads are: 1 Pad, Non-Solder Mask Defined. In circuit board design, pads with spacing that does not allow solder (usually bumps) on the pads to contact the adjacent solder mask. [
Electronics Forum | Wed Mar 22 01:24:54 EST 2006 | Joseph
Dear all, Referring technical report from Vitronics Soltec, "Pad lifting, fillet lifting and fillet tearing issues in LF soldering". The use of LF solder alloys today has brought about a recurrence of this crack formation, called fillet tearing. The
Electronics Forum | Thu May 08 10:16:17 EDT 2003 | davef
Observations are: * Center most lead of the fuse on the top right of the assembly looks like it has excellent solder flow, but this is PTH. From the amount of solder, it must have been wave or hand soldered. * Center most lead of the fuse on the bot
Electronics Forum | Fri Feb 20 18:00:35 EST 2015 | hegemon
We have this Robot. We have the large table model from Fancort. We have incorporated the machine into a process where it finishes up the through hole soldering that the selective soldering machine cannot reach effectively. About 2200 joints done wit
Electronics Forum | Fri Feb 20 18:01:02 EST 2015 | hegemon
We have this Robot. We have the large table model from Fancort. We have incorporated the machine into a process where it finishes up the through hole soldering that the selective soldering machine cannot reach effectively. About 2200 joints done wit
Electronics Forum | Sat Jun 04 12:11:49 EDT 2011 | davef
Q1) How to identify on good or bad RF shield that could contribute to dewetting? A1) We use Alloy 770 and 752 [German silver] for our RF shields. We have never seen a solderability issue, even aged stock solders well. * Nickel Alloy 752, Nickel Silv
Electronics Forum | Wed Apr 03 04:08:20 EDT 2013 | ericrr
Yes well, now we used to add a bit of flux to our leaded paste to make it slightly runny, But when we went to unleaded paste the joker who came in from another company to set the temperature on the oven said "you dont add anything to unleaded paste!.
Electronics Forum | Mon Sep 11 09:43:14 EDT 2006 | C.K.
So, your scenario is: * Lead Free Solder Paste * Lead Free Reflow Profile * RoHS Components * Non-RoHS (Sn-Pb HASL plated)PCB If that's the case, you should be just fine running your Lead-Free process. There is literature on the topic of lead
Electronics Forum | Fri Aug 04 08:28:20 EDT 2006 | Rob
Hi Joe, Try: S03X7C-56M from koki - http://www.ko-ki.co.jp which has cobalt in it to extend tip life or: SN100C from Nihon Superior, which is a nickel stabilised alloy that also extends tip life. The Koki solder flows better that any other leadfr
Electronics Forum | Thu Jul 27 09:03:18 EDT 2000 | Wilson
Dear all, Does anyone know where I can purchase a wave soldering machine that must be well-known and can support 24" x 24" PCB size? Or much larger than this size is required. Any suggestion will be appreciated in advance. Best Regards, Wilson
