Electronics Forum | Sat Feb 15 15:01:06 EST 2014 | dexter11233
At my company we have to capture centroid data from gerber information on almost a daily basis, so tinkering and toying with quicker and easier methods of getting the job done are fairly common place with us. As stated by Richard Larue UniSofts cad
Electronics Forum | Mon Feb 28 12:01:30 EST 2005 | Bob R.
We use QFNs in automotive products and have done a good bit of experimenting with pad designs, paste patterns, stencil thickness, and thermal via patterns. All of them have an effect on assembly and thermal cycle reliability. There is not a yes or
Electronics Forum | Thu Mar 16 03:45:51 EDT 2017 | rob
It's the same thermal issue whether it's a die or package. It's different if it is just a signal trace, but if it's a heatsink pad (LED, FET, Motor driver, PSU IC etc). I think the voiding issue boils down to what the part is actually doing. The or
Electronics Forum | Tue Jul 31 04:45:42 EDT 2018 | robl
Depends on what sort of outfit you are working for, and what you are building. A lot of CEMs are doing Flying Probe or ICT on the boards ahead of investing time building into units or adding parts that prevent access to rework. We have a combination
Electronics Forum | Tue Apr 02 22:52:38 EST 2002 | davef
Tks BT Can't be many places tougher than automotive, 'cept maybe oil field, down pipe. We use Dexter Hysol flow underfills for both 1 thou and 3 thou gaps, but they wouldn't come close to filling under a BGA. Most BGA are sitting about 16+ thou fr
Electronics Forum | Fri Aug 24 17:30:40 EDT 2007 | jmelson
Oh, for a second there I thought it was 257 C, not F. Solder temperature! Still, one WEEK at 257 F seems way extreme. Maybe this is to bake out a part that has been underwater for a week. Is this a military part? I can't imagine any commercial-g
Electronics Forum | Thu Sep 23 01:46:57 EDT 2021 | auriga2001
Are you asking what manufacturer and type of machine to use for your production needs? It depends on the complexity of what you are making. Is it high quality for medical or military? Automotive? Commercial? How small are the components you typically
Electronics Forum | Tue Aug 27 04:32:45 EDT 2024 | BobbyWang
Having worked in the automotive industry and used machine from Kohyoung, SAKI, and parmi, while all three manufacturers offer high-quality machine, I've found that parmi stands out in terms of software stability and programming flexibility. Its nice
Electronics Forum | Thu Oct 31 16:40:01 EST 2002 | dragonslayr
Steve- I was once an auto body repairman in an automotive assembly plant. We used lead for dent filler instead of bondo. It was much faster to use. No cure time like a plastic filler needs. Lead was absorbed through my skin from hand filing the lead
Electronics Forum | Wed Dec 06 08:29:50 EST 2006 | David
Hi Pavel, We regularly use over printing on a multitude of problem parts including fine pitch QFP's. In an Automotive Environment the only thing you can change without a mountain of paperwork is the stencil. best way to work out how much you can get
