Electronics Forum | Fri Mar 06 10:46:35 EST 2009 | davef
First, we agree with Loco that your QFP is nonwetting, rather than dewetting. Your sceen-shots look like ol' timey SnPb paste recipes. Turn-up the heaterometer dial. Second, on nitrogen: * We kinda think your O2 needs to be around 100ppm with 99.99%
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
Industry News | 2018-10-18 08:21:10.0
How to Prevent Non-Wetting Defect during the SMT Reflow Process
Industry News | 2018-12-08 03:29:29.0
SMT Dictionary – Surface Mount Technology Acronym and Abbreviation
| http://etasmt.com/cc?pageID=newsList&ID=te_news,0&pNum=19
), an intermetallic of ... Show Details Circuit Board Voids & PCB Delamination Circuit Board Voids Show Details PCB Nonwetting Printed Circuit Board Nonwetting is a condition whereby a surface has contacted molten solder but has had part or none of the solder adhere to it
