Electronics Forum | Thu Apr 15 16:27:33 EDT 1999 | Nancy V
I had someone suggest that they weren't really necessary as long as your process is good. Is this just a way to help you keep an eye on your process? I was thinking, as we set up our line, our money would be more well spent with controlling the pro
Electronics Forum | Fri Apr 16 01:19:10 EDT 1999 | Wiratsr
Hi Jeff, I didn't have experience with Pansert MV2-E, but I have MV2-F. The machine running in high speed, but very noisy. I have other machine Sanyo TCM-3000 Same speed with MV2-F. Sanyo is original design turret system, a stable mounting machine,
Electronics Forum | Tue Apr 13 17:44:29 EDT 1999 | Christopher Lampron
| 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 to
Electronics Forum | Sat Mar 13 14:39:01 EST 1999 | Earl Moon
Finished profiling this morning for a particularly obstinate board. Couldn't raise the nozzle as many of you suggest, and SRT promotes, because of dense population around every associated rework part. However, we did get good removes (TC'd and verifi
Electronics Forum | Thu Mar 11 16:44:34 EST 1999 | Earl Moon
| | For Dean and the rest of you interested, | | | | I have reconciled many of my thermal issues with this machine and its peculiarities. The bottom side heater seems adequate, at 750 watts (not going to spend 10 grand extra for 500 more watts no ma
Electronics Forum | Fri Feb 05 09:22:25 EST 1999 | Dave F
| | | Joni: What is it about your situation with the board/component/process that makes you want to explore alternatives? Dave F | | Dave: In our case the component is placed on metalled footprint which has via holes to transfer the heat via hole
Electronics Forum | Wed Feb 03 18:32:07 EST 1999 | Earl Moon
| I'd like to find some technical papers on the reliability of reworked BGAs. If you know of any, please let me know. | | I have a concern about this because our current rework process does not apply solder paste to the pads prior to placing the pa
Electronics Forum | Thu Feb 04 15:44:04 EST 1999 | Michael Allen
Actually, solder paste adds about 12% to the joint volume for PBGAs, or about 31% for MicroBGAs -- assuming standard (recommended) pad sizes and stencil thicknesses, and paste with 90% metal content (50% metal by volume). | | I'd like to find some t
Electronics Forum | Wed Jan 20 10:03:10 EST 1999 | Earl Moon
| I need some opinions (And I know everybody has one). | I am mounting a board into a case, after mounting the board | I am loading it with stress in the middle causing it to bend around .030 inch. The board is 4" X 6" and is Bending in the 4" dire
Electronics Forum | Fri Jan 15 09:36:20 EST 1999 | Earl Moon
| Folk's, | | I'm looking for information of how long you cna store a gold finish PCB before building it. I know there are problems with the gold disappearing into the underlying nickle over time / temperature etc but exactly how long do you have be
