Electronics Forum | Mon May 24 09:52:06 EDT 1999 | john thorup
| | | Has anyone had any experience or data using vibration during the reflow process. | | | We introduced a vibration device attached to the fixed rail on a Vitronics reflow oven. The reason was to prevent skewing on large PLCC devices. The process
Electronics Forum | Fri Jul 24 12:12:52 EDT 1998 | smd
200 boards/Hr and oven will reflow ~180 boards/Hr but the P&P machine will only place 700-950 CPH | | when setup is taken into account. Minimum pitch is normally .020" and we place an Avg. of 491 TSSOPs and 217 BGAs a month. | | We don't even bother
Electronics Forum | Fri Jul 24 16:02:13 EDT 1998 | Justin Medernach
200 boards/Hr and oven will reflow ~180 boards/Hr but the P&P machine will only place 700-950 CPH | | | when setup is taken into account. Minimum pitch is normally .020" and we place an Avg. of 491 TSSOPs and 217 BGAs a month. | | | We don't even bo
Electronics Forum | Sat Jul 17 15:22:17 EDT 2004 | rohman23
Thanks for all the responses. I do agree with what was said, and can certainly see reasons not to try. I'll write a little more about what we do. We are a defense contractor, and as I mentioned very high mix, low volume. We only have 1 SMT line.
Electronics Forum | Fri Nov 20 08:23:13 EST 2009 | jeffreyj
MikeS - Thanks for the tips. Coombs book has been on my "to buy" list for awhile now... Guess I better buck-up and get it. EMPF is an old gem, for sure, but one I had forgotten about, so thanks for that reminder. I couldn't find the SMT 101 guide at
Electronics Forum | Thu Aug 24 15:30:33 EDT 2000 | Steve Thomas
On your last point, Wolfgang, I agree big time. Not that I disagee with the rest, but it's pretty much all been said. The layout of the forum is showy, which is OK by me as long as they've got the hardware to support it. Unfortunately they don't, a
Electronics Forum | Tue Oct 12 03:48:46 EDT 1999 | Chris May
| In a cost-reduction effort, our Design group is attempting to eliminate silk-screen (legend ink) on some new products. By the elimination of this process, there will be a slight decrease in the cost of the bare board. | | Presently, the silk scre
Electronics Forum | Fri Apr 10 03:39:50 EDT 1998 | Frank J. de Klein
| Cpk's on top flight ovens (e.g., Conceptronics, Heller, Electrovert, Vitronics) vary wildly, from 1 to 2+, between different supplers. The suppliers don't seem to understand Cpk's. A supplier's rep whose oven has a Cpk of 1.0 told me: | 1. Cpk's
Electronics Forum | Wed Aug 21 18:24:24 EDT 2002 | dragonslayr
surely, a big picture perspective is in order to keep from charging off, tilting at windmills and waning Quixotic. Just to tic ya off a bit more (come on now, smile), would those 2 boards in rework have just one defect each or are there multiple def
Electronics Forum | Wed Jun 11 16:45:09 EDT 2003 | jgregory
I do not agree. We were even told that if we do not pay, and we need to order parts, that there is no guarantee of receiving the right part number (since we didn't/couldn't use phone support for correct part numbers) and if the wrong part was receive
