Electronics Forum | Wed Jan 03 09:59:52 EST 2007 | Jim
Hi, I was looking for information on failure rates for BGA components. I am analyzing our BGA rework rates and find it difficult to define a root cause when a remove and replace of the BGA component corrects the test errors. Inspection prior to re
Electronics Forum | Wed Jan 03 10:34:18 EST 2007 | dphilbrick
Your failure rate should be as good or better than any other leaded part on your board. Have you done a reflow profile on this board. We typically sacrifice a board and drill a hole from the bottom and then imbed a probe under the part to get the tem
Electronics Forum | Tue Jan 16 18:18:46 EST 2007 | greg york
Sorry that answer never really gave you the reason and ways to resolve. Reason - most composite pallets are only good up to 180C so thermal excursions at 250 or even 270c lead free kill them. Try to stay on top of cleaning as well and some pallet mat
Electronics Forum | Wed Jan 24 21:29:43 EST 2007 | davef
Board fabricators commonly use Barco AOI to inspect film. The AccuMatch compares pixel-to-pixel of the Gerber data to the image seen by the AOI camera. It's slower than design rule checking, but has definite advantages [like lower falsing]. Unfortu
Electronics Forum | Fri Feb 02 12:37:16 EST 2007 | Derek W
We've had the same issues with silver. We also ran into shelf life issues but that's specific to our business. We've moved to ENIG with good success, our board vendors were also very happy to move away from silver though I'm not sure why. As long as
Electronics Forum | Thu Jan 25 09:45:54 EST 2007 | SWAG
You might consider installing a noise kit as it sounds like you've tried almost everything else. Electrical interference on these machines causes erratic problems, especially as they get older. I would call Speedline tech. and see if they think the
Electronics Forum | Wed Feb 07 17:05:48 EST 2007 | dsoohoo
Thanks Russ and Dave. Russ- I was planning on thoroughly cleaning out the remainder of the low temp solder and going back to 63/37 for re-installation of a new device (our company does not ever re-use a device). Given these circumstances, would you
Electronics Forum | Tue Feb 27 18:26:21 EST 2007 | jmelson
The machine is 2000 miles away, and the eBay auction has not closed yet. I'm working from what pictures and spec sheets I can find on the net right now. If I do win the bidding, I will need to be sure there is an opening wide enough for the machine
Electronics Forum | Fri Mar 02 15:09:21 EST 2007 | jmelson
21 hours to go, then I find out whether I own the boat anchor or not! Ahh, going down from 1300 to 960 mm is a great reduction! (Of course, that's a different machine, so it may not apply.) Maybe I'll try to get some more detailed pictures to figu
Electronics Forum | Wed Feb 28 14:25:33 EST 2007 | Bill
We have a board that uses a solder pad for one of the contacts of a button battery and had no problems when we were washing the boards. We are now using a no-clean flux and find that on a bunch of boards there is a coating of flux covering the pad s
