Electronics Forum | Mon Feb 12 01:09:49 EST 2007 | Wayne
I think the best way is to the following: - to use the low temp solder paste, or - asks semi-con use low temp solder sphere to make BGA
Electronics Forum | Wed Feb 21 15:35:22 EST 2007 | wavemasterlarry
BGA open? Isn't some golf outing? Can't wait for the golf season so all the engineers here go away.
Electronics Forum | Wed May 02 06:56:52 EDT 2007 | Rob
Has anyone experienced deformed balls on BGAs - especially very low volume build to order devices? I'm looking into a possible hidden pillow defect and think I have eliminated most of the other factors I believe could cause it. Cheers, Rob.
Electronics Forum | Mon Jan 15 18:20:11 EST 2007 | greg york
are you using composite pallets in the wave or oil/wax around the pump impellar? cheers greg
Electronics Forum | Mon Jan 22 02:23:47 EST 2007 | adamp
Thx guys, I'll check everything you mentioned, including solder pot, and solder feeder sensors.
Electronics Forum | Tue Jan 16 07:11:24 EST 2007 | tk380514
I cant touch the pre-heat as it would affect all other products or so i am told by the Qaulity manager. Maybe they think i am Mickey Mouse and the pcb�s jump around the factory like a scene from Fantasia :) if this was only the truth.
Electronics Forum | Mon Jan 15 18:58:50 EST 2007 | leemeyer
Set the conveyor to run at 1 foot/minute and the conveyor moves 1 foot in 1:11. Set the conveyor to move 2 feet per minute and the conveyor moves 2 feet in 1:11. etc...
Electronics Forum | Mon Jan 15 19:21:08 EST 2007 | SWAG
Not sure if this has any bearing on the problem but did you check to see that T2 and T3 are jumped on the speed control board per the first note in the prodedure?
Electronics Forum | Tue Jan 16 07:44:48 EST 2007 | jdengler
This 11 seconds is constant? Seems like it's a clock issue. The machine thinks a minute is 71 seconds. Jerry
Electronics Forum | Wed Jan 17 21:19:08 EST 2007 | Jnet
I believe the drive of the conveyor whether rail or belt is the same so the sprocket choice in the software would effect belt or rail conveyor speed. I would make sure the number of teeth match the sprocket selection in the software.
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