Electronics Forum | Mon Aug 25 06:43:37 EDT 2008 | callckq
Dear All, Recently, we found a strange defect called "Head-in-pillow" defect at CPU socket BGA. The strange thing here is that this problem only appear on that CPU socket BGA and not on the others BGA which were also mounted on the PCB. We suspect
Electronics Forum | Thu Sep 04 03:27:52 EDT 2008 | akareti
All, Does anyone have experience with underfill 300balls BGA connector? We have a component with 300balls BGA connector that connectorize with Flex. Customer wants to have an underfill Questions - Possibility for underfill 300balls BGA connector -
Electronics Forum | Tue Nov 04 04:00:38 EST 2008 | Martin
Hi All, Anybody knows good, repetable method of dispensing flux for micro BGA rework? 6x6 mm(0.5 mm pitch) The flux dispensing amount by brush may vary depending on operator etc. If operator dispense too much flux the BGA "swim".Around the BGA compon
Electronics Forum | Mon Jan 18 14:01:47 EST 2010 | cl
Good Afternoon, Is this by chance a Pb BGA on a RoHS board? We had an issue with a Pb BGA on a RoHS board where we experienced "ball drop" on the Pb BGA. This was due to the heat required to reflow the RoHS paste. It was more than the Pb BGA could
Electronics Forum | Fri Nov 19 10:23:07 EST 2010 | adetuc
Hi, Does anyone know what the placement success percentage is for lead components And the placement success percentage for lead free BGA components. We place many varieties of BGA devices, over 100 different size parts, from 1000 pin BGA to small 4mm
Electronics Forum | Tue Jul 10 19:30:15 EDT 2012 | gaz
We do SMT now, but might need to do some BGA. I assume we need: xray or some way to inspect bga workstation bga reballing system Does this look ok? Can anyone give me a rough idea of what it costs to get the basics needed for very low volume BGA?
Electronics Forum | Mon Jul 23 14:44:22 EDT 2012 | hegemon
If your pick and place can handle the part placements, you are most of the way there. X-Ray for Inspection of BGA and other bottom terminations = $60K(USD) and up. BGA Rework Station $40K and up. You can reball most any BGA with your Rework station.
Electronics Forum | Wed Jul 08 16:28:25 EDT 2020 | duchoang
OSP board finish is the issue. With OSP microBGA board, we need to have enough paste (enough flux) on pads (small pads on BGA), also we need to have strong, more activate flux to get rid of Preservative layer on top of pads. In this case, the OSP did
Electronics Forum | Wed Nov 29 00:43:45 EST 2006 | callckq
Dear all, Recently, we run 2 models with heat sink attachment on top of this BGA(on top of this BGA, there is flip chip attached at the center of the BGA). Hence, the center of the BGA is higher than corner/side. We used conventional way to attach
Electronics Forum | Sun Sep 05 12:59:48 EDT 1999 | Dean
| Could someone shares their experience on the causes of 'Open' in the BGA after reflow. | | Single sided BGA assy? Or double sided BGA assy (BGA's on both sides)? I have processed double sided (MIrror assy.) bga assemblies and can tell you it is
