Electronics Forum | Tue Aug 13 12:22:03 EDT 2002 | dragonslayr
A bit of gray area for you. consider the application over the specmanship. Why are the stiffeners there in the first place? Is the rigidity requirement a high function i.e. very necessary due to potential shock and vibration , etc.? The soldering is
Electronics Forum | Wed Aug 08 21:18:15 EDT 2001 | davef
Get-out the razor blades, bud. You could run that sukka for 6 sec dwell, cook breakfast on it, and you still will not get fill. [Hole file that is, breakfast will go along ways if peckish, though.] You could fire-up the depleted ozone rework gun [
Electronics Forum | Wed Nov 05 18:39:06 EST 2008 | joeherz
Hello, We have recently installed a selective soldering machine and are seeing some voiding/cratering in random locations. We have done some basic experimenting with fluxing parameters, preheat and dwell times but haven't been able to eliminate it.
Electronics Forum | Wed Oct 15 17:40:42 EDT 2008 | bandjwet
Dear SMTNetters: What are some favorite techniques for getting all of the solder from a plated throughhole on a heavy ground plane area? We are using a SAC 405 alloy. Regards BWET
Electronics Forum | Tue Jul 30 14:51:38 EDT 2013 | dyoungquist
How full is the barrel actually getting? Per IPC-A-610, 100% fill is the target but 75% fill is acceptable for Class 1, 2, and 3.
Electronics Forum | Sat Jan 10 09:04:47 EST 2015 | jandon
class 3 requires 100% barrel fill Class 3 requires 75% vertical fill of solder for component with less or more than 14 leads. Not 100% fill.
Electronics Forum | Tue Nov 07 08:01:10 EST 2006 | davef
We/ve never heard of "glass wicking failure" in regards to board fab. Boat fab, yes. Look here: http://www.boatdesign.net/forums/showthread.php?t=13321 Barrel cracking appears after thermal stress during soldering, because epoxy expands in the "z"
Electronics Forum | Fri Jun 04 11:31:27 EDT 1999 | Tony
| I'm encountering a new problem at my new company that I haven't encountered before in my past life - and that's Wave Soldering VIA holes. | | We've been getting a rash of defects that we call in this company, "insufficient solder in VIA hole." The
Electronics Forum | Wed Dec 10 08:30:20 EST 2008 | rgduval
Are you using no-clean solder, or just no clean flux? If you're using a solder with WS flux in the core, and a no-clean flux; we'd suggest switching to a WS flux to help during the soldering. If you are using a no-clean solder/flux combination, you
Electronics Forum | Thu Jun 03 20:09:56 EDT 1999 | C.K.
I'm encountering a new problem at my new company that I haven't encountered before in my past life - and that's Wave Soldering VIA holes. We've been getting a rash of defects that we call in this company, "insufficient solder in VIA hole." These def
