Electronics Forum | Tue Feb 25 10:32:09 EST 2003 | davef
I don't know the precise scheme, but it goes something like this ... WHAT TO DO * Use the general work instruction that applies to all boards. It goes into dimension and hole checking processes. It talks to visual instection of solder mask, solder
Electronics Forum | Fri Mar 07 14:46:16 EST 2003 | caldon
Technical Devices Also has a nice machine. Please goto www.technicaldev.com
Electronics Forum | Mon Oct 11 15:23:03 EDT 2004 | Phil
Hi Kevin Please also see my website http://www.solderrecovery.com
Electronics Forum | Tue Mar 11 09:49:59 EST 2003 | MGARCIA
DO YOU KNOW? WHAT KIND OF SOLDER PASTE IS BETTER IN ORDER TO AVOID THE TOMBSTONE DEFECT IN SMT PROCESS.
Electronics Forum | Tue Mar 11 10:19:00 EST 2003 | yngwie
We ran doublesided SMT thru Glue and Wave process before and but faced a lot of skip solder. Then the customer told us that they have similar problem when they ran the board so what they did was they print the paste-dispense the glue- place the comp
Electronics Forum | Wed Apr 02 09:25:32 EST 2003 | davef
RDR The most common cause of dewetting is from a fabricator using any form of abrasive (e.g. pumice, abrasive brushes etc.) on copper. With this process, abrasive particles get implanted into the copper (often actually swaging copper over some of th
Electronics Forum | Fri Apr 04 09:26:21 EST 2003 | ksfacinelli
What paste are you utilizing?
Electronics Forum | Sun Apr 13 19:55:21 EDT 2003 | yukim
Just some more info: PCB is HAL finished we are using Sn63 solder paste.
Electronics Forum | Mon Apr 14 09:39:49 EDT 2003 | davef
Consider: * Sn has a higher melting point than Pb. So the liquidous temperature of this new, non-Sn63 is going to be higher than 183*C. What was the thermal recipe measured on this solder connection? * Next thing we'd do is take problem devices and
Electronics Forum | Mon Apr 14 08:05:47 EDT 2003 | pjc
What 2D inspection? Solder Paste deposition perhaps? Transmission X-ray?
