Electronics Forum | Thu Nov 30 13:51:33 EST 2000 | Michael Parker
Thanks for the details. Next question- where is your first time pass rate measured? Is this at test? Do you have inspection gates at the end of each process step? To get to the root cause, you need the earliest detection. Collect attribute data by a
Electronics Forum | Thu Nov 16 06:13:16 EST 2000 | Adam Seychell
I am currently building a home PCB etching tank based on the ammonia/ammonium sulfate chemistry. The etching system consists of a etching tank, and an electrolytic copper recovery tank. The result is a infinitely replenishable etching system without
Electronics Forum | Wed Nov 01 13:44:50 EST 2000 | Thomas Ballhausen
Using convection type reflow we observed following problem: One ball of a 313-PBGA appears to be dewetting. This happens randomly, i.e. no specific ball location, failure rate is rather low (3-4%), but since there are 12 PBGAs on one board the failu
Electronics Forum | Wed Jul 19 17:34:25 EDT 2000 | Deon Nungaray
Craig, I'd be really hesitant in pursuing this method for a TQFP. Remember, most SMD's are rated for a maximum rising slope of around 4C/Sec. Immersing a fragile TQFP in a hot wave of molten solder will probably exceed this ramp up rate. Besides thi
Electronics Forum | Tue Apr 03 17:15:34 EDT 2001 | jdtpfacreate
Ryan, It is a must that you try to get a partner in Japan that can help you market your product. Japan is not a very open marketplace. Many of the companies will only deal with other Japanese companies. I used to work at a company that was suc
Electronics Forum | Wed Jan 26 02:18:18 EST 2000 | k.s park
Hi. man what's your opinion about buying the inspection machine. we have a lot of models but a few of b'ds to produce. the outputs of screen printer was good when i checked with centry 2000 lent. it was almost 6 sigma with the range of LSL &USL i ma
Electronics Forum | Fri Jan 21 05:39:58 EST 2000 | Scott Davies
Hi ZJJ, I know exactly where you're coming from on this one! We have a similar situation here with a SiPlace 80S-15, rated at 15K max per hour. In practice, we achieve about 11K. The reason is fairly straightforward. The quoted maximum placements pe
Electronics Forum | Wed Dec 29 15:42:34 EST 1999 | Mike Naddra
Justin, I would be currious as to your customers application, and if the temperature delta and rate are great enough to cause solder joint failures as a function of mismatched Tce then you may want to consider that even if you are able to identify
Electronics Forum | Mon Dec 06 00:22:41 EST 1999 | Greg H
Hi All, I have this problem sorting out the percentage of allowance that we need (per component) for our SMT machine attrition rate. When you say 1%. Say I have a PCB with 3 types of SMD components, type X is using 30 components, type Y is using 5
Electronics Forum | Thu Nov 11 11:33:30 EST 1999 | Brian E. Steelglove
Charley, I dont know what you define as durable but the one thing that I know about the QP 242 made by Fuji is that its slow and a very clumsy machine. The QP 242 is what Fuji calls there modular concept machine. I dont know about you but when I hea
