Electronics Forum | Mon Aug 25 16:48:14 EDT 2008 | petep
Any tips out there for effective LGA rework? How is solder best re-applied? Can these parts be sent out like BGA's for "re-balling"? Like all of you, we build, profile place and solder for reliability, but the time will come when one of these co
Electronics Forum | Wed Sep 24 13:12:31 EDT 2008 | snsmt
hey steve, thanks for that document, it helps a lot! is there a way you can send me a sample of how the .txt or .xls file is supposed to look like in order for it to be loaded into cad2cad? im not sure how it is supposed to look like. if you can th
Electronics Forum | Fri Sep 26 07:26:33 EDT 2008 | realchunks
Looks like lack of wetting. What is the BGA ball material? Could be high temp. Could be improper profile. Could be paste sat on board too long / flux dryout. Could be co-plane mount and this ball touched at the end of reflow curve. Could be cont
Electronics Forum | Thu Nov 20 09:49:25 EST 2008 | slthomas
"Jeez, how do people like this make it to power?" lol...there goes Hussman, saying what everyone else is thinking. I do like robgd3's line of thinking. If you want to spend money, why not spend it on a machine that replaces* stencils instead of one
Electronics Forum | Wed Dec 24 20:11:43 EST 2008 | xianhua_tang
hi,brettc! Our stencil openings no more than 4mm * 4mm, you have a larger component of the pads is more than a 4*4? At the same time, with the thickness of the stencil, I would like to increase the printing speed can be improved to reduce the thickne
Electronics Forum | Wed Jan 14 17:31:24 EST 2009 | swag
Doesn't sound like we use it exactly like your application. Similar to what davef says we use it for smaller to medium size or dense parts (sigle dot under the center of the part) that have potential to fall off on 2nd side processing. I can say it
Electronics Forum | Wed Feb 18 07:09:14 EST 2009 | glynnhamer
Thanks Dave, I have the correct part number from 3m, but like I said they want to only sell it buy the case, and it's expensive. I was hoping someone might know of a distrubutor that might sell in lesser quanities, or a different brand. It sounds lik
Electronics Forum | Thu Apr 09 10:28:09 EDT 2009 | winndom
We are looking to buy an AOI and 2 SPI machines. 3 AOI vendors we had one hour demo with at are MVP, VISCOM and CyberOptics. Before making our decision, we would like your feedback and experiences with those vendors. We would like info regarding how
Electronics Forum | Sat Jun 06 15:14:35 EDT 2009 | ysutariya
If the concern is the increased moisture absorption associated with lead-free capable materials, you probably have the most experience with phenolic materials like Isola IS410 or 370HR. The best move would be to switch to an IPC 4101/99 or /124 mate
Electronics Forum | Wed Sep 02 11:36:22 EDT 2009 | kpm135
Is this an established process that is just now exhibiting these problems, or is this a brand new process you're just setting up? What is the rest of your process like? What is done to the boards before you coat them? Water washed? Solvent washed? Sa
