Electronics Forum | Fri May 04 02:17:48 EDT 2007 | clusogreg
Are you sure the BGA is not Leadfree and the proces you are using is a leaded process? If so then the Balls will not reflow and there will be cracking. Likewise the other way around
Electronics Forum | Sat May 05 08:00:54 EDT 2007 | davef
Continuing with CF's point on mixed alloy processing of BGA, look here: http://www.aciusa.org/leadfree/LFS_SUMMIT-PDF/09_HILLMAN_Rockwell_Collins_BGA.pdf
Electronics Forum | Fri May 11 03:55:22 EDT 2007 | lupo
Hi everybody, Please could anyone shed any light on the subject: resistance laser cutting with flux- calibration of LEDs during electronic assembly phase. Should special equipments be used? What is exactly the process? Thanks and Regards,
Electronics Forum | Mon May 14 10:05:12 EDT 2007 | d0min0
hi, i'd like to know how do you maintain cleaness of your solder frames after production - we use both SnPb and leadfree process, we clean in alcohol and ultrasonic but the frames look white and i wonder if we do not damage the structure??? best re
Electronics Forum | Fri May 18 05:51:22 EDT 2007 | d0min0
I must improve rinsing for sure (no filtering of the water) but also a question - where do You buy/produce frames/carriers for both SnPb and LF wave processes we have just one supplier in France, we tried local ones but they lacked in precision...
Electronics Forum | Mon May 21 10:21:39 EDT 2007 | aj
Hi all, Can anyone share the revised spec that they now recommend for PB-FREE Processing ? I have been told to request High TG rating ? should this suffice. any replies appreciated. aj...
Electronics Forum | Fri Jun 08 14:33:39 EDT 2007 | jdumont
Perhaps his processing time is very lengthy which could cause issues with leaving water sol residues on the circuit so long. Thats my reason anyways...
Electronics Forum | Thu Jun 14 04:08:33 EDT 2007 | d0min0
we had same problems with heavy loaded boards (40 x 10 leg transformer each side) we placed 2 glue dots (Fuji GL)under trafo and played with profile bottom side (thermateh lcv4 - 6 zones, SnPb process) that did the trick
Electronics Forum | Thu Jun 14 20:03:42 EDT 2007 | davef
If you're concerned, consider reducing the period used to monitor pot temperature in your process monitoring. Then, if you observe temperatures that ramp out of control more often than you expect, it might confirm the suspicion about damage to your
Electronics Forum | Fri Jun 22 23:06:06 EDT 2007 | glennster
Brad, Our company does PCB failure analysis. I would like to discuss this with you. Glenn Robertson Process Sciences Inc
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