Electronics Forum | Tue Jul 15 22:50:12 EDT 2003 | iman
We have an internal engineering study on blowhole solder joints and had helped reduce the problem to pinholes symtoms. The pinhole occurs in solder joint of a Land-Grid-Array (LGA) side-wall (external perimeter of package) fillets. Our customer is a
Electronics Forum | Sun Jul 18 21:11:03 EDT 2004 | Thomas
Hi all, Need some advice on wavesolder pinholes issues. The PCBs are stored in a warehouse for 6 months and not vacuum packed. Before wavesodlering, boards are baked 2 hrs at 110 deg. But every piece of it has pinholes at random locations. PCB i
Electronics Forum | Sun Jul 18 21:15:05 EDT 2004 | Thomas
Hi all, Need some advice on wavesolder pinholes issues. The PCBs are stored in a warehouse for 6 months and not vacuum packed. Before wavesodlering, boards are baked 2 hrs at 110 deg. But every piece of it has pinholes at random locations. PCB i
Electronics Forum | Sat Jul 31 23:17:48 EDT 2004 | Bryan Sherh
Hi,Please 1.X-ray your board where you found pinholes.perhaps you'll found much voids in your joints,but not only the pinhole.this must be caused by the poor solderability of PCB mostly...or components. 2.Cross-section the pin hole or void in the joi
Electronics Forum | Thu Dec 12 17:39:14 EST 2019 | davef
When I hear "pinholes" in solder connections, I think of two sources, depending on the situation, which can be either: + Entrapped air and process chemicals develop during reflow soldering to cause the pinholes in and around the intermetallic layer
Electronics Forum | Thu Oct 17 05:16:44 EDT 2013 | vincentdesilva2003
Anyone can help me how many percentage of blowholes and pinholes if i do the followings: 1. Increase copper plating thickness more than 25 microns. 2. Pre Baking of PCB to remove gassing by drying out the PCB's
Electronics Forum | Wed Jul 23 05:47:53 EDT 2003 | iman
Yo Thanks! right on the money pad, the pinhole occurs mainly in the (fillet's) top-surface central of the whole solder (fillet surface) area. Like you said, large surface area, lowest surface tension. that's a possible cause, that the potential voi
Electronics Forum | Wed Mar 10 18:42:34 EST 2010 | 89jeong
Hello Sir. We also encountered the same pin-hole issue but there was around MLCC.I also looked for some information in technical report and internet, But i failed to get an answer. As you know this pin hole or blow hole is caused by the solder boilin
Electronics Forum | Fri Mar 28 13:22:19 EST 2003 | ksfacinelli
Could you be having outgasing from the melf?
Electronics Forum | Sun Mar 30 20:13:39 EST 2003 | iman
MK, this is a bad link, can help re-verify this link pls?
