Electronics Forum: check (Page 182 of 632)

detecting BGA micro cracks

Electronics Forum | Mon Feb 08 17:11:34 EST 2010 | woodsmt

Thanks Dave and Glenn, I have setteled on Dye for the destuctive checks, and was thinking about impedence testing at intervals during ESS. Based on the research I have been doing the last several days, this seems like a method that should identify

Topaz - New to me - L305 SoftLimit... ??

Electronics Forum | Tue Feb 09 12:15:14 EST 2010 | rajtaware

Check if the feeder position is out of picking area mentioned in manual. Change the feeder position.

Epoxy damaging SMT Components

Electronics Forum | Thu Feb 11 09:12:46 EST 2010 | blnorman

Have you checked to make sure the mix ratio is correct? My experience with epoxies is that if the mix ratio is off with too much hardener you will get a much higher exotherm than expected. Modulus is high too, pretty stiff material.

Strange things ocuring during reflow...

Electronics Forum | Thu Feb 18 11:37:25 EST 2010 | dcell_1t

thanks for your replies, I will check about oven integrity (calibration) and any exhaust issue... as fas as I know there's not change or addition to exhaust system but I need to confirm.

MPM Accuflex Camera not initializing

Electronics Forum | Mon Mar 15 18:03:21 EDT 2010 | smt_guy

hi, check the home sensors if they are working specially on the right side rail of the camera where you had the failure.

BGA

Electronics Forum | Mon Mar 01 09:36:29 EST 2010 | duanebrayton

Good morning Chris, We had discussed surface tension but were not sure if that alone would be enough, so I reduced the bottom side temperature in the oven by 20 degrees to see if that would help. I will be checking results this morning. Thanks f

X-Ray Inspection

Electronics Forum | Tue Mar 23 10:57:14 EDT 2010 | oeidave

Have you checked out YESTech X-Ray systems? Their 2D X-ray systems to fit your requirements and they are usually at a very reasonable price point for what you get. Good Luck

QFP Coplanarity Error

Electronics Forum | Fri Mar 12 12:11:20 EST 2010 | mikesewell

Dave's mirror should work. If you're not up to building it, check out http://www.fancort.com/smt/aids_mirror.html Regards, Mike

Large Area Wire/Wedge Bonder

Electronics Forum | Tue Mar 16 20:45:51 EDT 2010 | r_nelson777

check out DIAS in HongKong. They may have what you need. website. http://www.diasautomation.com email. sales@diasautomation.com

ICT and specifying PCBA testing

Electronics Forum | Tue Mar 30 02:19:17 EDT 2010 | jooh

Regarding X-ray I was referring to ssager's comment "...X-Ray is only as good as the human eye that is operating it...". I thought x-ray images could be checked by software algorithms to find defects, not only human eye?


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