Electronics Forum | Thu Sep 06 10:58:49 EDT 2001 | davef
If your words imaged correctly, it seems a bit strange to have a trace that is wider than the pad where it connects, because we�re used to seeing a narrower trace connecting to a wider pad. It�s tough to determine what the designer was thinking abou
Electronics Forum | Thu Oct 25 16:48:29 EDT 2001 | Cemal Basaran
We can inspect and measure strain field in anything larger than 320nm with Laser techniques we have. We can do this measurements during fatigue testing. Of course thick intermetallic region as a solid region is a problem due to the fact that you ha
Electronics Forum | Wed Oct 31 18:00:51 EST 2001 | Jonathan Mitchell
Hi All! In the near future we will begin to take on products that require a reflow process on both sides. We will run the backside first (smaller components) to reduce the chances of a part falling off during the second reflow, but my question is abo
Electronics Forum | Sun Nov 25 22:54:20 EST 2001 | ianchan
Hi All, We juz purchased a 2nd hand CyberOptics 3D paste inspection machine (what a mouthful...) and am seeking info : 1) what formulae is applicable, to calculate the deposited solder paste volume onto the pre-defined PCB pads? 1.a) from our obse
Electronics Forum | Tue Dec 11 13:56:38 EST 2001 | Damian Holzmann
Regarding your comment "technology doesn't seem to have improved". Actually, technology has improved significanty. Cyber Optics uses a line measurement, a new unit from Germany uses sine wave differential measurement. The Gridmeter unit captures a vi
Electronics Forum | Sun Dec 09 22:54:20 EST 2001 | dburr
It sound you have already discovered to root cause, flux entrapment in the via holes. Short of changing the desing, here are sone suggestions. The main thing is you have to dry out the via holes of the wet flux. Some things to try are: slow down t
Electronics Forum | Wed Nov 28 18:24:05 EST 2001 | mparker
Back in the days when pots, skillets, etc. were made of cast iron, vegetable oils were used to "season" the iron to prevent rusting and also from the food sticking to the pot during cooking. It would be reasonable to believe that you could use the sa
Electronics Forum | Thu Dec 06 11:01:19 EST 2001 | Carol Stirling
This SMT process certainly makes a body want to win the $$$ and retire! We have been trying to stabalize the process and keep running into new problems. Any help would be appreciated on this issue. All pads on both sides have the same look - partial
Electronics Forum | Fri Dec 07 13:15:45 EST 2001 | slthomas
We've experienced similar problems with film caps, specifically Panasonic's parts that are alledgedly compatible with both reflow and wave soldering. They are identified with either GB or JB p/n suffixes, which become either GX, GC, or JC for the ref
Electronics Forum | Fri Dec 07 15:23:27 EST 2001 | davef
I'm with Brian. TIN COATED 0603 FAILURES Welcome to the lead-free generation. ;-) The Eurolanders are so blanking stupid, it just makes my head hurt. But then again, it doesn�t take much. OK, enough pontification. Your profile is setup incorrec
