Electronics Forum | Thu May 26 16:41:00 EDT 2011 | scottp
Here's what I do: - Test Surface Insulation Resistance (we're in the high reliability market and use a test significantly harder than IPC's). I also test SIR in combination with other assembly materials like conformal coatings and wave solder flux
Electronics Forum | Tue Feb 19 19:36:21 EST 2002 | davef
You weren�t clear but I assume the problem is not widely distributed and affects only a few parts on each board. Do this trick: * Cut a ~1� piece of fairly serious wire, like 18 or 12 AWG. * Strip the insulation. * Gear-up with gloves, glasses, and
Electronics Forum | Thu Oct 20 23:01:12 EDT 2005 | davef
A highly activated flux will allow intermetallics to form, because the hydrogen halide gas that formes at operating temperature will react with the refractory nickel oxide. Refractory nickel oxide is what makes SS "stainless". This will be worse wit
Electronics Forum | Wed Oct 12 20:53:44 EDT 2005 | mderen
We are currently wave soldering connectors that are held in place by stainless steel screws. About 20% of these screws emerge from the process with varying quantities of solder attached to them. We have just had our solder bath checked and no impurit
Electronics Forum | Fri Apr 01 11:04:35 EST 2005 | chunks
A company called BEST makes a thing called Stencil Quik. It's like a stencil that sticks onto your board, you squeegee paste, place component/board and reflow. The Stencil Quik remains on the board. It prevents shorts and in your case could provid
Electronics Forum | Sat Oct 09 03:45:34 EDT 1999 | Brian
| Right now,we have some problem on SMT. Cause of the flux residue | in the connector. Do somebody have the same symptom? By the way, | can i find something to make the flux observe easy or take a photo with the flux. | | | Unfortunately, this pr
Electronics Forum | Thu Jan 07 16:46:05 EST 1999 | Steve Gregory
Hey ya'll!! SUCCESS! I was able to get that monster off!...(Now I just gotta' be able to get it back on right...hehehe) If you remember, the whole reason I had to rework it was because somehow they got the hole positions wrong in the board for
Electronics Forum | Tue Mar 20 09:31:09 EDT 2012 | fredc
Chris, You asked if others are having these issues. I know for sure they are. I am not with Count On, but we make nozzles also. Cree has published drawings of the recomended nozzles in their "Soldering and Handling Guides" for several years. We made
Electronics Forum | Thu Mar 21 21:21:37 EST 2002 | davef
In the beginning, there was TO-5. And it was good. Flushed with success, they created TO-220. It too was good. Then came SMT. It was better than some things, but then again ... In these early days, there was a haze on the horizon that blocked t
Electronics Forum | Fri Nov 02 11:23:52 EST 2001 | dougt
Here's my 2 cents....... I worked for a small company that manufactures pick and place machines and had the task of testing/troubleshooting and the dreaded calibration. These machines used vision for part orentation and have what I considered aweso
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