Electronics Forum | Thu Sep 02 11:50:58 EDT 1999 | ScottM
| Could someone shares their experience on the causes of 'Open' in the BGA after reflow. | | Insufficient solderpaste. "No flux" (sat too long after print). Those are what I've experienced. Cheers, Scott
Electronics Forum | Fri Oct 06 08:22:05 EDT 2000 | jackofalltrades
BGA's are not difficult, but should be inspected no matter how careful you are. Here we have been doing bga's forever and x-ray 100%. Without an x-ray there is no good way to ensure the BGA is placed properly, without bridging or insufficients. If yo
Electronics Forum | Mon Feb 21 08:33:53 EST 2000 | Tony Di Mauro
Kurt, When I was working in a captive manufacturing house we had been to migrate toward tenting all vias under the BGA to eliminate not only shorts but insufficient (Starved) joints. Tony
Electronics Forum | Mon Feb 21 08:33:53 EST 2000 | Tony Di Mauro
Kurt, When I was working in a captive manufacturing house we had been to migrate toward tenting all vias under the BGA to eliminate not only shorts but insufficient (Starved) joints. Tony
Electronics Forum | Thu Sep 02 21:19:25 EDT 1999 | NAZEEH CHAUDRY
| | Could someone shares their experience on the causes of 'Open' in the BGA after reflow. | | | | | Insufficient solderpaste. "No flux" (sat too long after print). | | Those are what I've experienced. | cbga or pbga if pbga check thermal prof
Electronics Forum | Thu Dec 07 00:55:51 EST 2006 | billylim
As you are aware the common method to rework BGA is : 1. Remove BGA with hot air reflow machine ( SRT as current practice) 2. Clean the BGA pad using solder iron and solder wick. 3. Replace BGA with SRT rework machine. The problem we have with
Electronics Forum | Wed Jun 26 11:44:06 EDT 2002 | jseagle
Steve, We do not currently run BGAs, but I have been told by a CM we use that does BGAs, that our Heller 1500 (5 zone) oven has an insufficient number of zones to properly reflow a BGA. Anyone else have an opinion about this it would be appreciated
Electronics Forum | Mon Feb 21 11:22:21 EST 2000 | K. Ckak
Hi Kurt, I agree with Dave F. I had exact same problem with PBGA placement. We requested our PCB vendor to plug/tent via (button printing) after HASL with SR1000 which worked well in the long run. There are couple of failure modes associated wit
Electronics Forum | Mon Feb 21 11:22:21 EST 2000 | K. Ckak
Hi Kurt, I agree with Dave F. I had exact same problem with PBGA placement. We requested our PCB vendor to plug/tent via (button printing) after HASL with SR1000 which worked well in the long run. There are couple of failure modes associated wit
Electronics Forum | Thu Nov 07 15:55:30 EST 2002 | Debi Musante
The XRAY looked okay with minimum voids throughout. Customer reports insufficient contact causing intermitten failures.
