Electronics Forum | Fri Mar 23 15:33:53 EDT 2007 | ppcbs
Does anyone know where to purchase 90/10 & Lead Free solder balls and kits for BGA Reballing? I'm having service problems with my current vendor who decided that they no longer wish to sell 90/10 balls, can't take in an order without a quote, and ca
Electronics Forum | Sat Mar 24 07:50:04 EDT 2007 | davef
It's possible that 90/10 is being replaced by LF in many ball suppliers' [Alpha Metals, Kester, AIM] inventories.
Electronics Forum | Mon Mar 26 10:40:14 EDT 2007 | solderiron
WaveroomPlus can offer the following Sn95.5 Ag3 Cu0.7 Sn95.5 Ag4 Cu0.5 Sn96.5 Ag3.0 Cu0.5 Sn97 Ag2.5 Cu0.5 Steve@waveroomplus.com
Electronics Forum | Mon Mar 26 06:10:54 EDT 2007 | RH
Dennis: Have you considered Asahi as a solder ball source? Asahi Technologies has helped produce over 90 million Lead Free PWB assemblies worldwide and has extensive experience in Lead Free solder processes at Sony, Hitachi, and Thompson. Solutions
Electronics Forum | Fri Jul 06 18:17:34 EDT 2001 | davef
We find no solder balls after washing our boards. It works GREAT!!! ;-) Probably more to the point, look at "Circuits Assembly" 7/01, p 40, "Eliminating Solder Beads In No-Clean PCBs". "Solder mask type & composition are the greatest contributor t
Electronics Forum | Mon Jul 16 19:27:27 EDT 2001 | eliishee
I have no choice, as per customer's request to remove the solder balls. Can i use water to clean away the solder ball since i'm using RMA solder paste not the water soluable paste.
Electronics Forum | Mon Jul 16 19:36:09 EDT 2001 | steven
I hv no choice as per customer's request to remove the solder balls. Can i just use water to clean away the solder balls since i'm using RMA solder paste and not the water soluable paste?
Electronics Forum | Wed Feb 07 16:14:54 EST 2001 | Antonio
I've recently read a posting here which said that the person was trying to reduce solder balls. One of the things the person had done was to adjust the reflow profile so as to be hotter and longer in the reflow state. Am I wrong here? I thought th
Electronics Forum | Mon Jul 16 09:04:00 EDT 2001 | Hussman
No argument here. But I've don't think I've ever seen solder balls on 0402s. Even when they're placed on narrow G dimension pads, where there is little toe fillet, I've never seen a solder ball. But your idea of reversed homeplates would work grea
Electronics Forum | Mon Jul 16 15:49:33 EDT 2001 | Steve
The solder balls you are talking about are caused by too much paste. Reduce the size of the stencil aperatures. Concerning removing the solder balls, the first thing you need to ask yourself is, do I need to remove them. IPC-610, 12.4.10 states, "Ac
