Electronics Forum | Wed Dec 31 08:55:09 EST 1997 | justin medernach
| Has anyone had any experience with thermal shocking | and cracking of SMD capacitors during the rework process? | My company was advised to preheat capacitors to 125 C | at a rate of 2 C/sec before replacing them onto boards. | Would this maybe
Electronics Forum | Mon Dec 29 14:42:00 EST 1997 | justin medernach
| Hello all, | I have experienced broken ceramic SMT parts. Most of the time, | we have found fractured inductive beads. Once in awhile, we find | broken Ceramic Caps. All parts we use are 1206 form factors and | we use tape and reel... | Michael
Electronics Forum | Tue Dec 30 20:31:11 EST 1997 | Jon
I suggest that you look at a few things: 1) The SMD pads may be too small for the part. Try to conform with the IPC standards in pad design. 2) The parts may be misplaced during the placement process. Tweek the placement program and if that doesn'
Electronics Forum | Wed Dec 24 22:46:58 EST 1997 | Scott McKee
| Can anybody give me feed back on the pro and cons of | using Pace, OK, Hakko, Metcal, etc... equipment in | their rework processes? I need to set up a low volume | rework station for mixed technology boards. | Would appreciate any suggestions. I
Electronics Forum | Mon Dec 22 16:09:02 EST 1997 | Justin Medernach
| I am designing an SMT pad for a ss metal switch. | Finished copper thickness is .0014 and nickle-plating | originally is 150 millionths. Initial testing yields 100,000 to 150,000 switches before intermitent failures (copper is reached.) I want 50
Electronics Forum | Fri Dec 12 10:28:30 EST 1997 | David Syracuse
I am interested in locating a water soluble resist mask that does not leave a residue after wash and is easy to work with during the screen printing process. I have tried the Alpha Metals 110 and 220 solder mask and have found that it does not leave
Electronics Forum | Wed Dec 31 23:16:13 EST 1997 | Scott McKee
I'd like to inform you that CIMBridge is a Mitron product, whom was recently bought by GenRad... UniCam is their competitor... | UniCam. You go to their web site www.unicam.com | | | If your a CIMBridge user with HP-UX as your operating | | system
Electronics Forum | Wed Dec 10 14:03:56 EST 1997 | Scott Cook
| I would appreciate hearing views on vapour phase soldering particularly in respect to BGA's. | I know that they used to use CFC's but apparently this is no longer the case? | Can anyone help with some info? | Thanks, Alan Brewin Alan, Unfortunately
Electronics Forum | Thu Dec 18 14:44:59 EST 1997 | Scott Cook
No problem..... > No; the last time I used the process was 1983. > Yes, and in your neck of the world, I'd bet you're looking at Flutec products.....(I used PP11 juice way back in 1979). > I would dispute this. I did EXTENSIVE testing for thermal eff
Electronics Forum | Mon Dec 08 14:40:08 EST 1997 | Rin Or
| First Responses Lost: Please Repost | | Looking for info on process flow for 2 sided SMT with PTH | | on the top side. | | Both sides have large SMT ICs. I don't know what the best approach is; | | Epoxy, Paste in Hole, High temp paste. | | Any in
