Electronics Forum | Tue Apr 27 09:31:45 EDT 1999 | Robert L. McCallum
On circuit board assemblies first pass yields need to be above 98%, if a supplier is below this level it is a indication that: he has poor control of the manufacturing process; Poor component selection (price over quality; excepted a poor design from
Electronics Forum | Tue Apr 27 07:20:34 EDT 1999 | Richard Marks
I'm a mechanical engineer and we buy electronic pressure sensors and switches. In doing quality audits, I need to understand what "best practice" will yield in terms of conforming product first time through the manufacturing process? Any data out t
Electronics Forum | Wed Sep 12 08:22:52 EDT 2001 | pr
Last I heard DEK was coming out with a new Revision of Form Flex to address some of the problems seen on the old revs. You should contact Dek and see if they will replace your old ones with the new rev. When ot works it's a great tool.
Electronics Forum | Thu Feb 22 21:52:43 EST 2007 | vshan
but the problem is the stopper comes down only after the board pass thru rgd vshan
Electronics Forum | Fri May 05 03:20:06 EDT 2023 | abhishek10
Yes everything is Yes,IT was passed on tester as well . i Doubt some intermenternt contact was available at the time but still it got passed.
Electronics Forum | Thu Dec 17 15:53:32 EST 2020 | dwl
for option 3, if you place the connectors on the first pass then flip the board, won't the protruding leads interfere with second pass stencil printing? My vote would be to overprint onto the solder mask. you can print pretty far and still have it w
Electronics Forum | Wed Feb 20 09:05:38 EST 2008 | tonyamenson
We had a similar problem with lead-free through-hole components. We baked those baords to remove the residual moisture and everything went to 100% pass - defect was gone. Couldnt hurt to try a sample run while you decide if the PCB holes need to be
Electronics Forum | Mon Aug 18 10:42:04 EDT 2008 | floydf
We are in the process of preparing for a new board that requires paste in hole processing. The hole is a .020" via, and our customer wants it filled with solder, but not bulging past flush. For printers,we use a DEK 249 with a squeegee, and a DEK 260
Electronics Forum | Thu Jun 14 11:26:30 EDT 2007 | mumtaz
It may be your screen printer my friend. You are using a MPM aren't you? I knew it. Try a DEK to rid yourself of these pesky problems.
Electronics Forum | Fri Jul 04 21:09:04 EDT 2003 | ramanandkini
I have a CEM-1 PCB board with 35 microns copper. This is PCB is finished with SMOBC+HALS. We do solder SMT LEDs, but till date we do not have problems that you have listed. The LEDs are good & bright. It even passed high & low temp cycle tests (-40 t
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