Electronics Forum | Tue Jul 21 17:06:55 EDT 1998 | Jerry
I have some general questions about new product introduction: 1. How much capacity on the average is committed (line shifts) are committed by your factory to NPI? ie. We commit one line on 8 hour shift per day to NPI. 2. How many NPI's would you com
Electronics Forum | Tue Jun 13 12:00:15 EDT 2000 | Brian Larson
How long and at what temperature to you bake through-hole boards for moisture? I am getting blow holes after the wave solder. Everything points to the drilling of the board, but I need to prove that it is not moisture.
Electronics Forum | Tue Apr 23 09:52:57 EDT 2024 | tommy_magyar
Hi there, As long as there is a standard procedure (choosing a so called bad-board-sensor [BBS], machines being taught in with this option, and operators trained) the impact should not be high. True that you have to push more panels through. The t
Electronics Forum | Thu Dec 09 13:37:35 EST 1999 | Mike F
Does anyone have a suggestion for soldering boards with 1 inch long leads sticking out the bottom? Our vendor is using a drag solder machine, but I'm not happy with the preheat and controls on it. We assemble boards with numerous LED's( 200 to 700 pe
Electronics Forum | Thu Dec 09 17:29:15 EST 1999 | Russ
Mike, It sounds like you have a serious problem, I don't know much about drag soldering or what your specific soldering problem is with your present supplier. I do know that with a conventional solder machine these leads won't even make it through
Electronics Forum | Thu Mar 15 07:04:59 EDT 2007 | chrissieneale
Hello Just wondering if anyone has done trials on how long you can leave paste (tin-lead or pb free) on a board after you have printed it before it starts going 'off'? Thanks Chrissie FYI - have searched and found the 'pasting ahead' thread - jus
Electronics Forum | Fri Mar 16 07:10:53 EDT 2007 | davef
1 Print paste on a bare board or laminate. 2 Place components in the paste. 3 Gently invert and support the board above a table. 4 At one hour intervals, record the number of components that have fallen from the board.
Electronics Forum | Mon Mar 19 12:25:11 EDT 2007 | slthomas
This test nicely demonstrates the bond between parts and paste over time, but what about tack of paste on unpopulated boards? It seems she would also need to be testing by placing parts on boards that have been printed for 15 minutes, 30, 1 hour, 2
Electronics Forum | Thu Dec 09 23:57:41 EST 1999 | Jeff Sanchez
Mike, A drag solder system is not so bad. If it's not discoloring the silk screen , damaging your parts or blistering your boards than it looks like a safe bet. I am not sure what other components you have on the boards besides the LED's? But the
Electronics Forum | Fri Mar 16 02:20:09 EDT 2007 | Wayne
Have to check with paste manufacturer. paste on the stencil should be at least 12 hours paste on the board before mounting should be at least 4 hours.
