Electronics Forum | Mon Mar 05 11:24:16 EST 2007 | samir
Something the "placement guys" don't tell the customers... Cpk is an easily "massagable" number. You just take some data points and reduce the variation a bit, or even play around with your spec limits, or a combination of the two to get the highes
Electronics Forum | Mon Mar 05 18:20:44 EST 2007 | ratsalad
We buy our paste in Semco cartridges. You don't need a pneumatic gun to administer the paste to the stencil, just use a caulk gun which you should be able to purchase at your local hardware store. The cheap ones are about $2 (US). We have green
Electronics Forum | Thu Mar 08 14:30:45 EST 2007 | ratsalad
If you are in the middle of a run and can't get a replacement stencil there immediately, you can always put a little kapton tape on the bottom of the stencil to mask off a portion of the DPAK pad and reduce the paste deposit. We have had to do this
Electronics Forum | Mon Mar 12 14:30:51 EDT 2007 | Grant
the inquiry was about fast changeover--some people (you, for instance) may > not be aware of some machines capabilities or changeover concepts even with > your vast experience with Mydata and Fuji. I guess if someone asks about soldering flux compar
Electronics Forum | Wed Mar 07 12:57:15 EST 2007 | John S.
Hover Davis makes a feeder that can be fitted to many pick and place machines. Runs about 7k. I've seen print on demand feeders at tradeshows for about 30k. If you've got enough volume, you could also laser etch. There's more capital involved, bu
Electronics Forum | Tue Mar 20 21:49:38 EDT 2007 | davef
Mark there is no need to YELL here. Turn it down, please. While you're waiting for other to reply, search the fine SMTnet Archives to find threads like: http://www.smtnet.com/forums/Index.cfm?CFApp=1&Message_ID=34512 You'll find that the followi
Electronics Forum | Wed Mar 21 11:52:56 EDT 2007 | slthomas
Mark, the only Panasonics I've worked with were MSHIIs and an MPAV2B and at this point I'm foggy on both, but both tracked component inspection errors quite well. You should be able to tell how many parts are rejected for thickness inspection errors
Electronics Forum | Tue Apr 03 01:17:57 EDT 2007 | Haris
Dear all, One of the major reason is that some components have curved shape terminations and thats why their attrition rates are high. So CORRECT THEIR VISION FILES OR IF PROBLEM REMAINS THE SAME THEN INCREASE THE TOLERANCE OF THAT COMPONENT VISION
Electronics Forum | Sun Mar 25 15:38:07 EDT 2007 | Gibbon!
Couple of things. Type T thermocouples are solder friendly. However usually a header with screw terminals poses no problem as the temperature differential is nil. Getting thermocouple leads wet causes problems because two dissimilar metals + condu
Electronics Forum | Mon Mar 26 11:34:31 EDT 2007 | coop
as long as you are not getting recognition errors, and placements look good, go with it. as far as the pattern matching, the only thing I can think of is changing the it from circle or square to sp. shape and giving it the dimension sizes asked for.
