Electronics Forum | Fri May 21 04:03:46 EDT 1999 | Joe Manzur
John, Were doing an intrusive reflow process on a single sided board, where all the conventional parts are on the "top" of the board. Due to the nature of the board, and the kind of componets on it, we couldn't wave solder it. To keep it contai
Electronics Forum | Mon Apr 19 02:45:31 EDT 1999 | Brian Sloth Bentzen
| | We process both tin/lead plated boards and gold plated boards in our surface mount group. I have used Sn62/Pb36/Ag2 solder paste on all gold plated boards to help prevent gold scavaging. To reduce the amount of different solder pastes we have t
Electronics Forum | Tue Apr 13 04:54:53 EDT 1999 | Charles Stringer
| | DOES ANY ONE KNOW HOW I CAN STRAIGHTEN | | BENT PINS ON A FINE PITCH QFP WITH OUT DAMAGING | | THE CHIP. AT $300 A CHIP I CAN'T SCRAP THEM. | | | I use tweezers and picks. I place the component down on it's backside (legs up) and manually twe
Electronics Forum | Tue Apr 13 12:36:57 EDT 1999 | Scott McKee
| | | DOES ANY ONE KNOW HOW I CAN STRAIGHTEN | | | BENT PINS ON A FINE PITCH QFP WITH OUT DAMAGING | | | THE CHIP. AT $300 A CHIP I CAN'T SCRAP THEM. | | | | | I use tweezers and picks. I place the component down on it's backside (legs up) and ma
Electronics Forum | Wed Apr 07 11:53:59 EDT 1999 | Dave F
| Could somebody send me some information about the SMT Beginning? | I mean, when, where, why, SMT starts. | | Thank you, | | Roberto. | Roberto: There�s lots of reasons for getting into SMT. Some of which follow: 1 Manufacturing engineers thi
Electronics Forum | Wed Apr 07 12:54:13 EDT 1999 | Roberto Cardozo
| | Could somebody send me some information about the SMT Beginning? | | I mean, when, where, why, SMT starts. | | | | Thank you, | | | | Roberto. | | | Roberto: There�s lots of reasons for getting into SMT. Some of which follow: | | 1 Manufac
Electronics Forum | Thu Mar 25 19:19:08 EST 1999 | Graham Naisbitt
| I am looking into replacing another business division's Acrylic coating process with our Urethane coating process. Unfortunately, MIL-I-46068 doesn't differentiate AR/UR's performance, and the MFR data sheets don't match up at all (they each spec
Electronics Forum | Fri Mar 26 13:02:18 EST 1999 | Scott McKee
Sorry, in the following message I'm agreeing with Graham - not Greg... | | I am looking into replacing another business division's Acrylic coating process with our Urethane coating process. Unfortunately, MIL-I-46068 doesn't differentiate AR/UR's p
Electronics Forum | Thu Mar 25 02:22:32 EST 1999 | P.L. Sorenson - Technical Consultant
| | | Your problem may be related to silver migration (leaching) into the solder. I had what seems to be a similar problem. The solution was using solder with 2% silver content. See these pages for a bit more information: | | | | http://www.ferr
Electronics Forum | Thu Nov 19 11:06:40 EST 1998 | Earl Moon
| We have some PCB�s in our warehouse in Manaus - Brazil. They are stored for more than 2 years , in a condition of 25 degrees centigrades and a humidity ranging from 60% to 90%. | Do these conditions cause the PCB�s to deteriorate over time? If so ,
