Electronics Forum | Thu Apr 17 14:14:17 EDT 2003 | davef
Takfire Questions are: * Why does your customer think the capacitor is the issue? [What are we thinking? Of course the capacitor is causing this voiding problem. What else could it be?] * What are the type, construction, end-cap material and plati
Electronics Forum | Fri Mar 02 08:52:20 EST 2001 | markkrmp
Are your voids looking like blow holes also? Is this only occurring on the solder joints of the Thru Hole components and Via's? Or does this happen on SMD pads? My experience is that we have seen this but only with some of our older PCB's which are
Electronics Forum | Sat Aug 18 11:23:10 EDT 2007 | Learn From U
Hi All, Via X-rays, we found solder voids appear on PTH location, especially on Dimm connectors area. We think this should be related to PCB issue as we found solder unable to fill up the PTH hole during bare board testing at wave soldering machi
Electronics Forum | Thu Mar 01 10:29:00 EST 2001 | davef
If the soldering process is not controlled, the results are variable, regardless of the flux type. Tell us more about your concerns, process, solder, etc
Electronics Forum | Tue Mar 06 03:29:05 EST 2001 | daled
Hello I am looking for any data that confirms the long term reliabilty of no clean paste as opposed to water soluable. Does anyone have any past experiences of problems when changing over from water soluable to no clean in the SMT prcocess?? Thanks i
Electronics Forum | Tue Oct 06 16:50:51 EDT 1998 | Manish
Hello Everybody Would anyone of you know about the impurities in the Ni/Au pad metallurgy (board side metallurgy) affecting the assembly of the chip on the board. I was told that impurities in gold may lead to void formation in the solder bumps.
Electronics Forum | Thu Apr 17 16:41:37 EDT 2003 | davef
60% ||||36% of ball area|| >36% ||Class2|| Accept|| Reject ||||45% of ball diameter|| >45% ||||20.25% of ball area|| >20.25% ||Class3|| Accept|| Reject ||||30% of ball diameter|| >30% ||||09% of ball area|| >09%
Electronics Forum | Thu Apr 17 17:41:13 EDT 2003 | Takfire
Dave, I truly appreciate your efforts in providing information. Excellent input with the fishbone data. I will put together a presentation later tonight. I hope to return the favor in the future in regards to MLCC manufacturing or application.
Electronics Forum | Thu Apr 17 22:20:39 EDT 2003 | davef
Q1: Industry standard detailing solder joint quality? A1: ANSI/J-STD-001 - Requirements For Soldered Electrical & Electronis Assemblies is the mutha of industry standard detailing solder joint quality.
Electronics Forum | Tue Feb 19 22:57:38 EST 2008 | davef
Duno. What's the diameter of: * Finished connector lead * Finished through hole We reckon: Lead size plus ~0.25mm [0.010"] is normal.
