Electronics Forum | Tue Mar 13 16:05:30 EST 2001 | rob_thomas
Hi, can you definitely attribute the 30%yield to poor bga soldering? What is your high flyer defect encountered on the failed boards.Is this ICT ,flying probe ,functional test yield? Can you determine a defect pattern? Did your subcontractor provided
Electronics Forum | Tue Jan 18 12:36:11 EST 2000 | Dave F
Dave: I haven't located something to support your contention, yet, and I'm not going to comment on the factors that drive reliability beyond component selection, because I know that you've got some sweaty-palmed sales type wringing his hands waiting
Electronics Forum | Fri Oct 08 10:08:48 EDT 1999 | Glenn Robertson
| | | | I have a board, 4 spacers needed to be soldered on the board | | | | first with the normal 62Sn37Pb alloy. Then, capacitors are manually soldered on the boards. The density of the board is quite high. If we wave soldered capacitors first,
Electronics Forum | Thu Sep 16 12:06:29 EDT 1999 | Scott S. Snider
| | | Hi, | | | | | | Can someone pls suggest to me the best reflow temperature setting | | | for a force air convection oven. The details is as follow. | | | 1) Heller 1700s | | | 2) 12 zone---6 top and 6 bot | | | 3) Solder paste --- Qualitek 691
Electronics Forum | Sun Apr 25 11:50:08 EDT 1999 | Earl Moon
| | | We are just starting to manufacture a PCB with a .039" fine-line PBGA. We are currently seeing voids, mainly in the center, that are as much as 45%. We also intermittently see the corner balls of the PBGA smaller than the center balls. We are u
Electronics Forum | Mon Mar 08 20:17:41 EST 1999 | Michael Larsen
| | I'm having a fun time between BGA rework/repair using an SRT 1000 and SPC efforts (much easier) using DEK stencil printing processes and BTU reflow with 6 Fuji lines in between. | | Concerning the BGA stuff, I'm getting about 60% success using
Electronics Forum | Tue Jul 28 09:15:49 EDT 1998 | Justin Medernach
| We are about to run our first BGA devices and would appreciate some confirmation on a few points. | First some details: | PCB & Device: | ============= | 1) 16 layer (4 power, 4 gnd, 8 signal) | 2) gold on nickel finish | 3) ceramic BGA with eutec
Electronics Forum | Wed May 27 09:56:39 EDT 1998 | Chrys
| | | We recently made the switch to no-clean and the wurface mount is turning out beautifully. However, the wave solder process continues to put up a fight; we are getting a white residue on the surface of the PCB. The residue is not localize
Electronics Forum | Wed May 27 15:09:30 EDT 1998 | Dave F
| | | | We recently made the switch to no-clean and the wurface mount is turning out beautifully. However, the wave solder process continues to put up a fight; we are getting a white residue on the surface of the PCB. The residue is not locali
Electronics Forum | Fri Aug 17 06:40:27 EDT 2001 | nifhail
Thanx Dave/Hussman.. We normally store our solder paste in the refrigerator at 0-10 Deg C as per what the supplier recommanded. Our floor temperature is controlled at 22 +/- 5 Deg C and Humidity is at 55 +/- 5%. Recently we have customer asking fo