Electronics Forum | Wed Dec 19 18:41:33 EST 2007 | darby
You printer is not solely designed for printing solder paste. This is why some of the options you would never use for paste appear in the menu. You may actually be printing overlays or yes, even t-shirts. This is why you may want to flood/print, prin
Electronics Forum | Wed Dec 19 15:43:23 EST 2007 | cdsullivan
Hi, I was just wondering what the most common process is for silkscreen/legend removal and/or rework? Scenario: Fab house had a registration issue on some SOT-323 packages where the silkscreen encroached or was actually printed on the surface pads
Electronics Forum | Fri Jan 04 09:44:59 EST 2008 | philkaz
Hello, I am Philip Kazmierowicz and I work with KIC, a Thermal Profiling company. We have done many lifetime experiments on Printed Circuit Boards over the years. The key thing to understand is that if the primary material of the board in FR4 fiber
Electronics Forum | Tue Jan 01 22:50:53 EST 2008 | fastek
To get beyond the 36,000 cph threshhold the turret manufacturers had to focus on ways to get the boards in and out of the machine faster. This also included loading more boards inside the worknest. The end result in Fuji's case (CP-643), was a table
Electronics Forum | Fri Dec 28 14:31:42 EST 2007 | clampron
RC, I agree. I have tried to educate management as to the real benifits of height measurement. Our President attended a CEO meeting of some sort and was told that solder paste height measurement will solve all of the worlds problems. She then inquir
Electronics Forum | Fri Dec 28 15:37:06 EST 2007 | realchunks
OUCH! The ol' boss went to a seminar clich� eh? That�s a killer. Especially if it�s salesperson driven (which most are). Almost as bad as when they pick up Circuits Assembly or Assembly Magazine. OK so you�re stuck doing this process. I would
Electronics Forum | Fri Jan 04 07:54:24 EST 2008 | benzy1961
My experience has been very different from the other responders. We put an in-line system in place about 3 months ago and the results have been pretty eye-opening. We were astounded to see how many prints were actually bad once we started inspectin
Electronics Forum | Mon Jan 07 13:07:11 EST 2008 | chef
All must be cautioned when messing with acids. Of course, neutralization is required. ("ADD ACID TO WATER", says the wise mans daughter). But at what cost to do the job right? Theoretically, anythings possible. Have messed with acids for soldering an
Electronics Forum | Fri Jan 04 09:01:35 EST 2008 | davef
Here's a link to the article that Loco references in the above post: http://www.smtnet.com/library/files/upload/DevelopingaReliable.pdf The table seems to be taking a simplistic approach. J-STD-020C, Table 4-2 lists nine catagories of MSL classific
Electronics Forum | Mon Jan 07 09:25:55 EST 2008 | pjc
One per operator is the optimum for obvious. 3 to 4 per operator is more typical. The number is not as important as the type and time. Like don't have someone handle 2 different TO92 part nrs., splitting them up to different operators eliminates the