Electronics Forum | Sun Jan 31 03:28:24 EST 1999 | Jeff Sanchez
| Hello Netters, | | I need some info, Earl or Dave, I have a PCB that exhibits a white layer on solder side. It does not appear to be surface residues (IPA has no effect), but looks like its under solder mask. My first guess is that the LPI solde
Electronics Forum | Fri Jan 29 07:55:52 EST 1999 | Wayne Bracy
| | | | | | Greetings, | | | | | | | | | | | | Can anyone tell me what temperatures pcb's should have when coming out of a forced convection reflow oven and out of a wavesoldering machine. | | | | | | Also, is there any danger of the pcb's giving of
Electronics Forum | Fri Jan 15 09:11:28 EST 1999 | Steve Gregory
| Due to an foul up on my part, a circuit board ECO snuck up on me and I have a solder paste stencil that doesn't quite match the board. Two pads are off by about half a pad each. | | Can the solder paste stencil be modified? If so, what is the tec
Electronics Forum | Fri Jan 08 13:22:11 EST 1999 | Earl Moon
| This is a question for those of you who actually assemble components onto a board. | Any idea what the "industry standard" is for fall out on assembled PCB's? I realize that the controls put in place in your processes will effect your overall qua
Electronics Forum | Fri Jan 08 21:46:49 EST 1999 | Dean
| | This is a question for those of you who actually assemble components onto a board. | | Any idea what the "industry standard" is for fall out on assembled PCB's? I realize that the controls put in place in your processes will effect your overall
Electronics Forum | Wed Sep 23 20:42:10 EDT 1998 | Steve Gregory
Boy Chrys, aren't you lucky? Too busy to mess with that stuff huh?...must be nice!! Ya' know, it doesn't say much for the design, or the design-er when you see a bunch of wires on board, but if the person who does the jumper wires is good, and take
Electronics Forum | Tue Jul 28 17:35:07 EDT 1998 | Brian Stumm
Steve, I know it is tempting to go for the cheapest method of applying conformal coatings but I must warn you. If you are a contract manufacturer then you don't want to limit yourself in the types of coatings you can work with. Just as soon as you se
Electronics Forum | Tue Jul 28 17:44:03 EDT 1998 | Brian Stumm
| Steve, | I know it is tempting to go for the cheapest method of applying conformal coatings but I must warn you. If you are a contract manufacturer then you don't want to limit yourself in the types of coatings you can work with. Just as soon as yo
Electronics Forum | Thu Jul 02 15:23:15 EDT 1998 | Justin Medernach
| | I'm having a problem getting good reflow on gold sufaced boards. The profile looks good and I have adjusted it both hotter and colder and adjusted the various times ( soak, reflow ) to no avail. What realy gets me Is that a month ago we built som
Electronics Forum | Tue Apr 21 20:58:11 EDT 1998 | Steve Gregory
Mike wrote: ...I did buy "Surfboards" built for this purpose but they averaged about $5.oo a piece, and when your running 20 trainers, and they still have to be soldered in place. $5 a test is kinda high when evaluating a 32 cent chip...(snip) Hi