Electronics Forum | Sun Apr 16 14:37:25 EDT 2000 | Roberto Navarro
Hi, I work for Nortel and here rework BGA'S we use DRS22 rework station and CRT 2000 X-ray inspection. The main problem is put again the BGA on the PCB because you need reboling the PCB and you could damage the soldermask. Talking about Air-vac is ve
Electronics Forum | Wed Mar 01 17:09:51 EST 2000 | Dave F
Gwen: Failures occur during a products life cycle, as you say. According to Reliability Analysis Center, overall factors affecting reliability are: � Maintenance shop (17%) � Hardware reliability (16%) � Retest OK (28%) � Design (21%) � Quality (18
Electronics Forum | Wed Mar 01 16:58:03 EST 2000 | Dave F
Robert: On your balls: Solder suppliers make several "standard balls" and can advise you. On your cleaner: Recycling water / direct to drain? Most batch cleaner suppliers can advise you on recycling and filtering systems to keep you out of troub
Electronics Forum | Wed Feb 23 21:37:31 EST 2000 | Morris
Michael: I would agree with Jason. It seems your analysis has pointed you to one specific brand of part. I've also seen this phenomenon. The part was Palladium plated and when we switched to a nickel/tin plated part, the problem went away. Some o
Electronics Forum | Tue Jan 30 12:03:15 EST 2001 | slthomas
Pete, I'm wondering how much optimisation you needed (or were allowed) to do with respect to connector design. The first one we evaluated had a row of leads that I can only describe as "crescent" shaped in cross section. Impossible to get even 50%
Electronics Forum | Tue Mar 13 13:13:39 EST 2001 | cebukid
Not to toot my own horn, but ever since I came on board at my company, wave solder defects have gone down by 35%. This was due mainly to a new flux and a process control system that I implemented back in '99. Now, the metric used was DPMO. How do
Electronics Forum | Thu Mar 15 16:49:16 EST 2001 | mparker
Whew, what set you off, amigo? You're absotively on target. Those book authors are writing to their own peer group audience, therefore all you get is techno geek jargon. It takes a seasoned (basted lightly)veteran to interpret. You know, the battle h
Electronics Forum | Wed Jul 04 14:22:51 EDT 2001 | davef
I just rooted through an analysis that we did five or six years ago [so current it aint] and finally found the goods. We talked to Vitronic, Heller, Electrovert, IR, and Conceptronic. Only Electrovert had a 2.75" throat [rail to top of board cleara
Electronics Forum | Sat Jan 15 13:13:33 EST 2000 | Mark Wiegold
Steve, Basically in answer to your question, there is no real set number for defects. Defect rates will vary between products and companies. If my company was running the same product as yourself then there is no reason to suggest that the defect ra
Electronics Forum | Fri Oct 01 14:16:15 EDT 1999 | Rick
I know there are a ton of variables that affect the overall height of a BGA after soldering to a PWB but... I'd like to know if anyone has done an analysis of (or if it's documented) as to what the pre and post reflow height dimension as measured fr
