Electronics Forum | Mon Nov 28 20:51:26 EST 2005 | davef
Se�or Tech We use stencils from other suppliers. So, we have no specific problems from Microscreen. Generalizing, most stencil manufacturers recommend that their product not be exposed to temperatures in excess of 110*F (43*C). Our old buddy B S
Electronics Forum | Thu Dec 15 20:57:53 EST 2005 | Ooi
What u meant by change every 1.5 day ( Expose to enviroment 1.5 day) ?
Electronics Forum | Tue Jan 24 11:59:55 EST 2006 | Chunks
Tell your board house/customers you want "non-smobc". hich stands for non-solder maske over bare copper. MPMs love exposed fids in just about any finish. You can always use pads on an MPM too.
Electronics Forum | Thu Feb 23 04:04:46 EST 2006 | Rob
We used durastone, with a profile routed out to expose certain areas & protect others. Durastone costs peanuts, and the tool room uses a small cheap Micromat router.
Electronics Forum | Wed Mar 08 17:06:55 EST 2006 | Chunks
You will not get a "visible" solder joint on this part. The joint is under the part. If you can magnify the part, you'll see the exposed lead is not plated.
Electronics Forum | Thu Mar 30 08:59:46 EST 2006 | Dan
Yes the balls are at the outer edge. The chips we have are not showing exposed copper, but the lead-free finish...
Electronics Forum | Fri Apr 28 12:53:09 EDT 2006 | Chunks
Did you mean "export" "expose" or something else? Does answering a question with a question make the original qustion worse? If I answer my own question with a question does it make the problem go away? TGIF!
Electronics Forum | Sat Apr 29 08:46:02 EDT 2006 | Charles
Dear all: thankx for you replay this thread. I mean how to "expose". That is my wrong. If any one get good comment please free feel to provide.
Electronics Forum | Thu Jul 20 03:00:53 EDT 2006 | reypal
If you are using SMT machine for component placement you may check your nozzle where in some cases solder paste stuck to it and during placement will easily get into gold pad area. otherwise you have use kapton tape in order not to expose those pads.
Electronics Forum | Mon Feb 05 17:39:53 EST 2007 | flipit
Remember, deionized water is very corosive. If the water is too deionized, 10 mega ohm, it will leach the ions from exposed metals. I had a stencil cleaner where the welds completely dissolved. The stainless steel tank was fine but the welds were
