Electronics Forum | Wed Oct 10 13:49:12 EDT 2001 | stepheno
I recently started at a new company. They have a variety of bare PCB's and most have aprox. 20 variations. Maybe about 1/3 of each board on average are non-populated locations. They buy one stencil for each PCB but then use scotch tape to block of
Electronics Forum | Thu Jan 24 19:58:58 EST 2002 | davef
for regular eutecticish solders, keep the pot temperature between 230�C [446�F] and 290�C [554�F]. If you polled us on our pot temperatures, we�d be all over the map, but with more lower than higher than you. High pot temperatures tend to generate
Electronics Forum | Sat Feb 02 23:16:17 EST 2002 | caldon
STIMPMAN- Dave is correct Teflon has to be going somewhere. Solder is also expensive and to be dragging it around the fingers on your machine is not cheap either. (I am sure Debbie could recomend a reclain system ). Some times the pain is either fron
Electronics Forum | Mon Apr 01 15:46:35 EST 2002 | stepheno
Do you have double "sign-offs"? I.E. two operators look at each reel that gets changed? That helps a lot. One place I worked had labels made up that had the operator put down what the part was and the time and two sets of initials. What I have nev
Electronics Forum | Wed May 08 09:49:17 EDT 2002 | Hussman69
Hello, We are experiencing a little problem of cutting feeder tape. When ever we place two or more 24 mm feeders together, the cutter on the machine will partialy cut the adjoining tape, or pull it out of sequence. The machine is a Panasonic MSR,
Electronics Forum | Fri May 10 14:02:05 EDT 2002 | pjc
First off what bone-head designer put them there in the first place. Vias in solder lands is a big time no no. I had this problem at a CEM I worked at. I had the customer change the design but had to run the 6 samples they supplied. I ended up fillin
Electronics Forum | Wed May 22 17:16:11 EDT 2002 | russ
We currently have two samsung CP20 CVs unfortunately I have no experience with the MyDatas The Samsungs are pretty good machines, They seem to be pretty solid all around but have experienced placement problems with 216 pin 16mil pitch QFP. The soft
Electronics Forum | Wed Jun 19 14:44:11 EDT 2002 | kenbliss
It sounds like your inspector improved quality and pre-staging your feeders dramaticaly increased uptime on your machine, thats great to hear. One cautiionary note, be careful not to flood your production area with parts off of your SMT line. With
Electronics Forum | Mon Jul 29 21:45:13 EDT 2002 | davef
Your board fabricator can tell you how they want you to specify boards that do not have solder on the fiducals on the rails. They probably do not need some BIG stinking drawing change, but can operate from a letter. [And even if you run the change
Electronics Forum | Tue Aug 27 13:52:24 EDT 2002 | Mike Konrad
MK, In most cases, if the machine is completely closed-looped (prewash, wash, prerinse, rinse, final rinse etc), then the water should not require changing. As with most inline cleaners, there should be a considerable amount of water loss in the cl
