Electronics Forum | Wed Oct 04 18:21:04 EDT 2006 | stepheniii
We have a board we run screwed to a fixture. There is no warping that way. If you go for reheating the BGA's make sure there is no time for the BGA's to absorb moisture.
Electronics Forum | Thu Oct 05 16:06:33 EDT 2006 | cw
Thanks! What's your ramp rate?2 - 3C/sec? What's your time above 217C. What's your peak temp?
Electronics Forum | Thu Oct 05 16:41:53 EDT 2006 | flipit
This is from 1995/96 time frame. I believe they sold their business to Philips and now Assembleon. Good luck! Comtra Systems, Inc. 2585 North Fairview Ave. Roseville, MN 55113 612-633-4084 800-936-6286
Electronics Forum | Tue Oct 10 09:39:14 EDT 2006 | blnorman
Does anyone have experience with electrically conductive adhesives? We're looking to try one (don't know whose), but I'm concerned with degradation of the adhesive over time or thermal cycling. Any success or horror stories would be appreciated.
Electronics Forum | Mon Oct 16 07:53:59 EDT 2006 | realchunks
Hi Larry, Typing in all caps is consider yelling in forums. As for your stones, have you tried soaking the old ones in iso to clean them? This should make them last a long time. You may be paing a higher price for stones since they a no longer
Electronics Forum | Tue Oct 17 14:41:23 EDT 2006 | slthomas
Actually I'd gotten tired of waiting on hold, but the last time I called I left a message. Great customer support once you get someone. Got a driver and a .pdf for a 17 year old ISA card!
Electronics Forum | Thu Nov 23 09:41:36 EST 2006 | Jon
The DPMO is a far better measure - first pass yield doesn't give you any indication on quality or effectiveness of test step. If you want 100% first pass yield, test nothing - works every time - you see where I am coming from..........
Electronics Forum | Sun Nov 12 09:40:47 EST 2006 | Andrew
Can someone help me to advise the best profile for a board with the combination of both Lead Free and Non-Leaded part?If possible,pls advise the best preheat and reflow time and temprature.
Electronics Forum | Tue Nov 21 19:23:15 EST 2006 | greg york
Had exactly the same problem the other week. Baked some boards did improve slightly but not convincingly. Washed bare PCb and found excessive HASL fluids left on board from improper rinsing and problem disapeared. Baking HASL fluid out is impossible
Electronics Forum | Sat Nov 25 21:18:03 EST 2006 | callckq
Dear all, I would like to learn from all regarding purpose of each profile stages, such as preheat, soak, peak cooling. At what stages, flux start to be activated? Thanks for your time,
