Electronics Forum | Thu Jun 17 10:25:43 EDT 1999 | Brian Wycoff
| | We are a medium sized PCB assy. house manufacturing about 2000 motherboards a day. There is a major problem we are facing at the wave soldering stage, i.e. warpage of the PCB. As soon as the PCB touches the wave it warps severely from the centr
Electronics Forum | Wed Aug 19 08:00:55 EDT 1998 | Earl Moon
| Hi there, | I'm actually facing a lot of trouble with PCB's presenting up to 3mm of bow /twist at reception i.e. before assembly. The PCB size is 220 by 230mm. The boards are to be assembeled SMD double sides with 05.mm pitch on both sides. In orde
Electronics Forum | Fri Aug 20 14:51:47 EDT 1999 | Tony
| | | Yesterday as I was creating a profile on a plastic BGA using Conceptronics freedom 2000 rework station, I happend to discover that I was able to remove solder bridging from a plastic BGA. | | | | | | This is what I did. | | | | | | Created a
Electronics Forum | Fri Aug 20 14:51:55 EDT 1999 | Tony
| | | Yesterday as I was creating a profile on a plastic BGA using Conceptronics freedom 2000 rework station, I happend to discover that I was able to remove solder bridging from a plastic BGA. | | | | | | This is what I did. | | | | | | Created a
Electronics Forum | Fri Aug 20 17:17:14 EDT 1999 | K.T
| | | | Yesterday as I was creating a profile on a plastic BGA using Conceptronics freedom 2000 rework station, I happend to discover that I was able to remove solder bridging from a plastic BGA. | | | | | | | | This is what I did. | | | | | | | |
Electronics Forum | Thu Aug 10 13:12:10 EDT 2000 | Bob Willis
You may care to review the following from my Circuits Assembly page on line. "HOW FLAT IS FLAT AND DO WE NEED FLAT CIRCUIT BOARD, YES WE DO ? As production problems go there is one that keeps reoccurring time and time again. The blame is usually di
Electronics Forum | Mon Mar 16 09:07:14 EST 1998 | Justin Medernach
| We have just go another batch of PCB's from our loaders, and some of the boards are severely warped. | The boards are PCI cards and one of the boards is 9mm out at one end. The PCB is 210mm long and 4 layers. | I am wondering if anyone knows what
Electronics Forum | Mon Jun 14 15:59:16 EDT 1999 | JohnW
| We are a medium sized PCB assy. house manufacturing about 2000 motherboards a day. There is a major problem we are facing at the wave soldering stage, i.e. warpage of the PCB. As soon as the PCB touches the wave it warps severely from the centre
Electronics Forum | Wed Jun 16 07:46:45 EDT 1999 | Glynn Technologies and Manufacturing
| We are a medium sized PCB assy. house manufacturing about 2000 motherboards a day. There is a major problem we are facing at the wave soldering stage, i.e. warpage of the PCB. As soon as the PCB touches the wave it warps severely from the centre
Electronics Forum | Mon May 27 12:14:35 EDT 2002 | arcandspark
I use the exact same paste flux that we use in our solder paste for SMT manufacturing with great success. I have also had great success using the Air Vac DRS Hot Gas units with the same size BGA's. If to much heat is applied to fast to the BGA be it
