Electronics Forum | Thu Nov 07 17:15:19 EST 2002 | slthomas
We have ESD safe velcro hook soled shoes for our operators. It keeps them at their machines. Seriously, everyone I've seen using it just uses heel straps and vacuums the carpet. Granted, many of them looked like they could use a shampooing, but I d
Electronics Forum | Fri Nov 08 09:35:37 EST 2002 | dphilbrick
ESD safe and conductive are 2 totaly different situations. There are ESD safe carpets but I don't think I have seen coductive carpet. For heel straps to work in a carpeted area it would have to be conductive. Don't get the 2 mixed up it can cause dea
Electronics Forum | Wed Nov 06 19:03:33 EST 2002 | broncos
If you are certain that reflow process is good, I would suggest starting checking the following: 1. Check to see if leads / pads are contaminated or oxidized. However, this usually results poor solder quality throughout the board. 2. Check the amou
Electronics Forum | Thu Nov 07 12:35:38 EST 2002 | slthomas
Sounds like you're talking about the "heel" of the lead not being soldered, in other words, no heel fillet, which IS necessary. That problem, for us, was attributed primarily to poor layout (insufficient length of pad extension to provide room for
Electronics Forum | Thu Nov 07 01:47:37 EST 2002 | Bach Huss
Hi all, I plan to measure the placement repeatability and accuracy. Is there any work done to simulate the paste effects on test board without using paste (My measurement equipment is a back lighting equipment). I saw someone placing components on
Electronics Forum | Thu Nov 07 20:46:00 EST 2002 | davef
Most of the printer and dispenser equipment companies job-out this glass plate analysis for the factory, pre-shipment verification of the capability of their equipment. Check with your equipment supplier, find-out the company they use [If they do it
Electronics Forum | Thu Nov 07 15:12:46 EST 2002 | davef
Converting BGA to PGA. Yes!!! Wouldn't want progess in packaging design to slow us down, would we? [Haaaaa. Just kidding. Probably has something to do with legacy designs; form, fit and function; and all that stuff.] Tacky flux only, like a rew
Electronics Forum | Fri Nov 08 17:49:04 EST 2002 | davef
Questions are: * So, what is your thinking on this "insufficient contact causing intermitten failures"? * How do you print the paste? * Where do you place your therocouples when measuring reflow temperature? * What kind of solderability protection is
Electronics Forum | Sat Nov 09 15:13:06 EST 2002 | mjabure
If I understand what you're saying, you are reaching reflow temp's on the top side while soldering bottom side components. You might want to run a glass gauge plate over the wave and make sure your contact pattern isn't too large. If your PCB is in c
Electronics Forum | Sat Nov 09 13:24:12 EST 2002 | soupatech
I recently took over a small SMT department where not only was organization not a prioreity, they didn't even know what the word means. I am preparing for year end inventory and I am finding a lot of loose parts to identify. Is there any way to find
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