Electronics Forum | Wed Nov 28 20:03:36 EST 2007 | chs
Hi, Thanks for the info. You mentioned about TQFP, how about QFN, which is leadless and one sided package compared to TQFP ? Actually, we are component manufacturer. Recently we have multiple customer come back with issue of electrical failure on par
Electronics Forum | Sat Dec 01 12:05:52 EST 2007 | slthomas
"...but does the Quad have any sensing of what is going on in the feeder?" Not with the feeders we use. Same deal as the Topaz, i.e., the machine knows if the nozzle has a part on it, but doesn't know what is happening in the feeder. There are "smar
Electronics Forum | Thu Jan 10 03:19:49 EST 2008 | chrispy1963
I have read all the replies here and have yet to see this one which I know works when our fids are HASL and distorted, thus unable to seem uniform enough for the vision systems on our MPM's or MyDatas to see them clearly. Using a stainless steel nee
Electronics Forum | Thu Dec 13 10:44:37 EST 2007 | slthomas
Since no one has responded I'll give you what little I know. My last place of employment used MSH-IIs and an MPAV-2B. As far as I know there is no optimisation capability at the machine like there is with your Topaz. The programmer used Panasonic
Electronics Forum | Thu Dec 06 20:35:14 EST 2007 | davef
First, let us pause for a moment, bow our heads, and say a small prayer for Ill. Second, the only thing that is absolutely necessary is to do some things that make your customer feel that you're smart and did a comprehensive job of assessing your ne
Electronics Forum | Tue Dec 11 12:15:36 EST 2007 | swag
We just got a contract to build a board with 1400+ SMT placements. This thing is 16" x 12" and the PCB thickness is 0.142". Dead center is a 580+ pin BGA that costs about $600. I'm a bit intimidated... I've done lots of mole profiling on BGA's bu
Electronics Forum | Fri Dec 21 04:52:36 EST 2007 | andy1975
Thanks for the posts everybody. I thinks this is all or nothing, I mean set up my own business doing this stuff or forget it. I've been involved in SMT for about 5 years now and feel pretty confident with the process stuff. Just curious to know how
Electronics Forum | Sat Jun 28 13:53:07 EDT 2008 | sleech
Fowler: Thank you for your documentation. Your finding roughly coincide with our own. We also found that 70 degree baking removes 50%/60% of the ingested moisture from moisture conditioned MSD packages We ran an additional experiment that compared
Electronics Forum | Thu Dec 20 07:50:12 EST 2007 | realchunks
Good to know there are a few smart people left in this industry like Darby. I love how everyone assumes the original poster was only talking solder paste. We use screen printers for five different materials. Some of which we triple print by design
Electronics Forum | Thu Dec 20 12:05:46 EST 2007 | realchunks
Not you Steven. Blanket comments like "Double pass printing for solder paste is not needed and will cause defects. Redesign your stencil thickness or aperture sizes, change your paste mesh size or type, go to 45 degree blades." are so way off base.
.gif)
