Electronics Forum | Fri Jun 18 11:37:10 EDT 1999 | Earl Moon
| | | | first of all what is the technical term for the small amount of solder on a plated pad. we are getting poor screen printing gasketing on a 20 mil qfp due to this solder not being even or too high in spots and not covering the length of the pa
Electronics Forum | Fri Jun 18 15:04:19 EDT 1999 | Scott Cook
| Scott, | | I do hurt easy. Be gentle, at least that's what I tell all the women in my life though quickly diminishing supply - oops. I do not happen to believe this statement. I have seen you dodge many a penned "dart" on this very forum. Since I
Electronics Forum | Fri Jun 18 15:54:29 EDT 1999 | M Cox
| | Scott, | | | | I do hurt easy. Be gentle, at least that's what I tell all the women in my life though quickly diminishing supply - oops. | | I do not happen to believe this statement. I have seen you dodge many a penned "dart" on this very foru
Electronics Forum | Mon Feb 11 21:57:03 EST 2002 | davef
Cal: What's a "sniffer"? No-Cleaners: * How do clean your board handling racks / carriers? * How do determine the level of residues on your boards? How often do you do that process?
Electronics Forum | Fri Feb 08 08:00:48 EST 2002 | caldon
Yet Again Dave spills his pearls of wisdom. Dave is correct in the moisture content wood absorbs. I know we have all visited factories with wood board holders and such. I have actually seen wood carts with drag chains. Also, keep in mind static can b
Electronics Forum | Thu Aug 24 15:54:13 EDT 2006 | davef
It depends. What is: * Storage environment and period * Board laminate, epoxy, and copper thickness of PTH * Down stream process * Etc FR4 0.062" thick boards absorb between 0.08 to 0.1%Wt of moisture within a 24 hour period, and 0.2 to 0.23%Wt in
Electronics Forum | Tue Apr 12 22:23:05 EDT 2005 | Al
The way we do this, is to tape a transparent film to the PCB. The printers and chip shooters can read fiducials no problems. Once it has been run through SMT, simply remove the tranparency film and the PCB is ready for use, no mess no cleaning and yo
Electronics Forum | Mon Mar 12 08:00:14 EDT 2007 | rgduval
It sounds like you may be thinking of two different test methodologies. What is required? Bare-bard testing, to verify pcb fabrication? Or populated board testing, to verify manufacturing? If it's bare board testing, the fab house should advise a
Electronics Forum | Fri Jun 18 10:24:12 EDT 1999 | John Thorup
| first of all what is the technical term for the small amount of solder on a plated pad. we are getting poor screen printing gasketing on a 20 mil qfp due to this solder not being even or too high in spots and not covering the length of the pads. an
Electronics Forum | Sat Mar 17 04:50:58 EDT 2007 | tanemmirt
thanks davef, your help was really segnificant.
