Electronics Forum | Fri Oct 17 14:33:05 EDT 2003 | AXL
Wait a minute I thought I said Celestica and a few others have done the Engineering evaluations on a list of 10 top solder paste's and Indium SMQ92J and Kester's R560&562 came out on top. First you say 'don't trust all of the so called experts on thi
Electronics Forum | Mon Nov 24 11:24:34 EST 2003 | Bill
Sorry for the long delay in response.. As it turns out, the float switch on our transfer station was gummed up (probably by the defoamer residue) and allowed the transfer station to get behind (backing up the gravitational flow of the wash system).
Electronics Forum | Sat Nov 08 09:42:22 EST 2003 | ethercom
Hi: I have seen this problem before. It is caused by improper curing of solder mask by the fab manufacturer. When you run the board thru' wave solder, and then wash the board, you see the problem of white residue. However, when you apply heat, you c
Electronics Forum | Tue Nov 18 07:37:35 EST 2003 | Chris Lampron
Good Morning Everyone, Recently we have received a directive from one of our customers regarding processing of ceramic chip caps. The directive states that soldering irons shall not be used to process or rework any ceramic chip cap anywhere in the p
Electronics Forum | Mon Nov 24 13:45:08 EST 2003 | cyber_wolf
Hello all, We recently implemented a Fuji CP642 into one of our SMT lines. We have a TON of problems with the overlay tape sticking.I have tried everything. I have put on brand new tape covers, bought a tape cover flatness jig, and verified station o
Electronics Forum | Sun Nov 30 08:53:15 EST 2003 | davef
IPC-6012A finds "circuit repairs" as acceptable in Class 1, 2, and 3 only "As agreed by user and supplier." So, it is your call, basically. Generally these repairs, if done properly, are reliable. See IPC-7721, 5.2.3, for conductor repair by welding
Electronics Forum | Thu Dec 04 07:30:50 EST 2003 | ex maintain leader
Hi Grant, I'm ex Fuji Service Engineer, Fuji GP 6xx is the best but for companies in ultra high tech (2 side cleaning+ long life operating, BUT not easy to teach the technicians). Ask Panasert create series is also well durable, but I newer use yust
Electronics Forum | Mon Dec 22 19:43:43 EST 2003 | Dean
I have seen this affect on Immersion Tin and OSP. 70 to 90 % of the solder wicks to the lead and forms a "single" homogenous solder mass. This even though the pad was 100 % covered with paste... Evaluated different solder paste...did find variatio
Electronics Forum | Sat Dec 20 02:35:27 EST 2003 | tommy
My boss who always like to read smt related mag,pick up what he can or don't understand from the article and blame all quality issue on engineering. We are seeing solder paste residue all over Juki printer equipment,on the floor,etc.This is mainly du
Electronics Forum | Mon Dec 22 08:20:34 EST 2003 | kauerr
Hi,I am a Mfg. Engineering Tech. and do Maintenance on all of our Equipment. 4796 HSPs, Dek 265 LT screen printers, GSMs, ect. We have 6 lines of equipment with certain operators assigned to each line, and you can really tell which operators do or do
