Electronics Forum | Thu Jan 17 11:49:54 EST 2008 | wayne123
HI, I have ran into this a time or two, and what I did before we got the BGA rework station was to run some flux under the component, and since the flux that was in the solder on the other solder joints has at least part of the way burned off in the
Electronics Forum | Wed Apr 28 12:20:41 EDT 2004 | mrmaint
Paul, It is hard to tell with the bridge the shape of the shere. The balls that are not bridged look very symetrical as far as the sphere. It does not appear to be over compressed.
Electronics Forum | Fri Sep 07 11:46:29 EDT 2018 | dleeper
Air gap on the PCB is determined the pad spacing which in turn is governed by the component. As long as the PCB designer is following the typical BGA layout best practices; i.e no open via in pad, non-solder mask defined pads, solder mask covered tra
Electronics Forum | Wed Apr 28 16:07:32 EDT 2004 | davef
In rework, your thermal recipe needs to better mimic the recipe that your use in your reflow oven. Oh, that and proper preheating of the board and BGA. [Yano, if you get bored fighting this, rereflowing the board is within reason.] That you are hi
Electronics Forum | Mon Feb 28 19:36:39 EST 2000 | Tony
I work for a contract manufacture of PCB's, we are also in the BGA rework business. We see all kinds of different size boards, as well as different types of BGA's and micro BGA's. We selected the Conceptronics Freedom 2000 over the Air Vac and SRT. T
Electronics Forum | Mon Feb 28 19:36:39 EST 2000 | Tony
I work for a contract manufacture of PCB's, we are also in the BGA rework business. We see all kinds of different size boards, as well as different types of BGA's and micro BGA's. We selected the Conceptronics Freedom 2000 over the Air Vac and SRT. T
Electronics Forum | Wed Apr 28 12:17:51 EDT 2004 | mrmaint
Russ, The bridges tend to be on the 2 outside rows. But we have seen a few near the center.
Electronics Forum | Mon Oct 08 23:17:48 EDT 2001 | Brad Arnold
We are trying to produce a PC Card bus assembly with a 672 pin BGA on one side. These pcb's are .015 thick. I believe the ball pitch is .5mm. The pcb's are plated with white tin. The pcb's are in a 1 X 3 array. We had 2 plates with appropriate cutout
Electronics Forum | Wed Jul 09 16:00:04 EDT 2008 | grics
Obviously you wouldnt perform the most difficult rework tasks till last... Sorry. I should have clarified. We rack our units to keep good units flowing and fall out are held for rework. The line never stops. Inspection is inline and it is the deci
