Electronics Forum | Thu Dec 30 23:25:49 EST 1999 | Henry C. Yao
We're using 96.5/3.5 high temp solder paste for our production and we're encountering soldering defects particularly non wetting (tombstoning). A technical document I read mentioned that there is a sort of a problem with the wettability of this paste
Electronics Forum | Mon Dec 13 21:05:34 EST 1999 | Curtis T.
Ken, we always build the bottom side of the board first. That also insures that there isn't any problems with the actives being reflowed and falling off in the glues curing process. By the way we do both paste and glue on the bottom of the boards t
Electronics Forum | Fri Nov 05 14:47:35 EST 1999 | Russ Cutler
We recently came to a cross roads... We have historically baked out ALL of our circuit cards, with a 2 fold purpose 1) to dry the part marking ink, and 2) to eliminate any moisture, which could result in measling further in the process of assembly.
Electronics Forum | Wed Oct 20 16:55:26 EDT 1999 | NickMata
Hello all, I am trying to get some information on ENTEK CU56. I am planning to use 310M flux on ENTEK 56 cards. It will not be a double reflow (top/bottom) followed by wave. I plan to reflow, glue/cure then wave. I am concerned about burning off the
Electronics Forum | Wed Oct 13 12:54:44 EDT 1999 | Dave F
Mikeh: You can't let that stuff get to your carbon bed. Literally, you can watch your bed die. The clay coats the carbon, entombing it. I've heard talk of using a RO filter as a front-end buffer to the recycling system, but know of no one who has
Electronics Forum | Fri Sep 17 18:33:51 EDT 1999 | Michael
| One problem we found was that when more than one person was working on the system at one time we had problems. For example one person working on the line computer, another on the machine computer and another on the VMPS system. That was usually a
Electronics Forum | Tue Jun 08 12:01:46 EDT 1999 | Steve Skinner
I am trying to find out as much information as possible relating to conductive inks. If anyone out there is using them please give some advice. 1) How are you curing the ink? 2) What type of substrates are you using and who supplies them? 3
Electronics Forum | Sat Apr 24 08:23:03 EDT 1999 | Bubba
| Surprisingly enough, ever since the addition of an omega wave, we solder those often-troublesome SOT23's just fine and dandy.. anyways, long-term, well be getting a universal GDM which uses positive displacement pumps..currently we're using fuji g
Electronics Forum | Thu Apr 22 10:57:20 EDT 1999 | Jack Coia
On various PCB's after building processes,such as reflow, flowsolder and wash. The soldermask on the PCB's have become discoloured, like a 'marble' effect all along the solder side of the board, it is lighter in contrast than normal, although when ot
Electronics Forum | Wed Mar 24 15:04:05 EST 1999 | Greg Curler
I am looking into replacing another business division's Acrylic coating process with our Urethane coating process. Unfortunately, MIL-I-46068 doesn't differentiate AR/UR's performance, and the MFR data sheets don't match up at all (they each spec di
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