Electronics Forum | Thu Aug 23 16:28:14 EDT 2007 | grics
I want to get a collective opinion from the forum... I was always under the impression that Humidity at SMT can be a disaster and can cause solder balls... But what about at the Wave/Selective solder? If every board or almost every board has solder
Electronics Forum | Wed May 20 17:00:56 EDT 2009 | dyoungquist
We just placed a 56 pin QFN, 1 per board, on 10 boards and had zero defects. A good paste job, proper placement and a correct oven profile are the keys. If these are set up correctly, on larger runs your defects won't be zero but they should be le
Electronics Forum | Thu Mar 31 15:53:23 EDT 2022 | stephendo
And pin outs of both. Once I saw a SOT-6 replaced with a miniSOT-6 (IIRC) The pin outs of the two parts were different. We did make an adaptor board and it wasn't too bad. We populated a panel of the adaptor boards, depanelized them and put them in t
Electronics Forum | Wed Aug 23 14:59:32 EDT 2006 | bill
I�ve been lurking on the forum for a while so I will take a stab at this, mainly because there is no answer I take it that you have a variety of boards being produced at the same time and are in fixtures so the conveyors don�t need to be adjusted, a
Electronics Forum | Mon Mar 06 17:17:13 EST 2000 | gary
I need a little help with RF and Rogers 4003 board material. My background was in digital and now I need to set up a new line to make small RF products (.5" x .5" or smaller). I want to find out about board platings, finishes/maskings and reasonable
Electronics Forum | Mon Mar 06 17:17:13 EST 2000 | gary
I need a little help with RF and Rogers 4003 board material. My background was in digital and now I need to set up a new line to make small RF products (.5" x .5" or smaller). I want to find out about board platings, finishes/maskings and reasonable
Electronics Forum | Fri Jul 23 10:47:31 EDT 1999 | Mark D. Milward
There is a practise within the industry of an Inspector inspecting a board, and that same Inspector performing touch-up. My opinion is that the Inspection and Touch-up operations should be separate functions whereby the Inspector is not performing th
Electronics Forum | Wed Sep 24 08:34:57 EDT 2003 | stefwitt
Even when you run a board several times, the machine may not make the same travel path every time. This in itself does not create a problem, but the vacuum on the nozzles could be different, dependent on the configuration of components on the heads.
Electronics Forum | Tue Mar 01 10:50:32 EST 2005 | pr
I think the 1st option would be the best. I have found that a touch up person WILL TOUCH UP SOMETHING, regardless of the electrical needs of the board. This leads to a lot of unnecessary rework of joints. I would hope QC is tracking the defects and t
Electronics Forum | Sat Jun 03 03:35:16 EDT 2006 | mika
Yes we do have a problem with this. We have by now investigate numerous lead/RoHS PCBA:s The RoHS boards are by far the most difficult one's to probe and test. Our people at the "test area" including Flying Probe and ICT they spend a lot of time to t
