Electronics Forum | Tue Mar 20 20:14:40 EST 2001 | davef
Electroplating [electrolytic] and dipping [HASL] are the two methods for applying solder coatings to features on boards. Disadvantages of electroplating lead / tin are: * "Weak knees" created at the edge of plated through holes. [I used to get weak k
Electronics Forum | Tue May 01 20:36:03 EDT 2001 | davef
Sorry to disappoint, bud. Believe it or not, this guy's for real. It'll be sad when his investors find out that returns on contacting are something akin to pass book accounts. I'd do something like the prank that you imply, but this is a lame topi
Electronics Forum | Wed Sep 10 02:47:49 EDT 2003 | Dennis O'Donnelll
This is a problem of contamination in the plating bath. Most prominent with white tin and some gold over nickel plating processes. Rather than argue with your vendor over the issue, and to avoid future recurring problems, I use either HASL or elect
Electronics Forum | Wed Oct 12 04:29:38 EDT 2005 | rlackey
We've seen issues with Elco's for years on boards with a lot of copper (higher than normal temperatures. We found that the 250C caps failed on the "burn in" tests as they has lost a lot of electrolyte in the reflow process. On some brands you could
Electronics Forum | Fri Jan 27 17:23:10 EST 2006 | muse95
Watch the solder profiles allowed for these caps. Most electrolytics cannot withstand high heat. Even RoHS compliant Electrolytics are often rated for peak 245C, 3 secs max, for example. Nowhere close to the 260C 10-20 sec you usually like to see.
Electronics Forum | Mon Jul 30 16:34:45 EDT 2007 | John S.
We're seeing shorting from the lead of an electrolytic cap to the can. It appears to be solder wicking up the lead, through the boot, and then shorting to the can. Has anyone else experienced this? It is a very cheap cap from China of course, but
Electronics Forum | Mon Feb 09 16:55:28 EST 2009 | cuperpeter
Hi Sachin, thanks for your feedback. According to our supplier, surface plating is electrolytic gold over Nickel(not ENIG), but I think that is a still improper thickness for Au. (according to 3rd Working Draft from September 2008 of IPC 2221B "0.4
Electronics Forum | Mon Nov 19 06:06:28 EST 2012 | ericrr
Hi ENIAC That table is part of a mush bigger article I was putting together, and will post somewhere at this website soon, as a one stop complete information. The hold up was Electrolytics and Tantalums code is different but there is no way to t
Electronics Forum | Fri Sep 22 15:12:36 EDT 2000 | John Thorup
Hello Jon (?) Sounds like it's just plain too hot. The Panasonic VA series specifies a maximum preheat temp of 160C for
Electronics Forum | Mon Jul 29 09:32:49 EDT 2002 | pjc
Are you doing a reverse leakage test? Also, some electrolytic caps require two (2) cap tests and should always have a leakage test last. The UIC verifier programming manual should explain this. Otherwise, contact UIC's tech. tele. support.