Electronics Forum | Wed Jun 16 09:45:26 EDT 1999 | Graham Naisbitt
| Could anyone please give me any information or obtainable references concerning proper guidelines for the application of conformal coatings (double comp.type) using both methods of spraying and dipping. Information must also include best instrument
Electronics Forum | Fri Apr 19 15:48:28 EDT 2002 | davef
I don�t know much about zinc either. I can tell you that zinc forms no intermetallics with lead. So, I�m not so sure that �diffusion� is the correct term. Of the following: * Hwang "Modern Solder Technology For � * Wassink "Soldering In Electronic
Electronics Forum | Mon Oct 21 11:49:20 EDT 2002 | sueph
Mike, We are currently wave soldering several assemblies with with a lot of ground plane. The soldering handbook we have in house suggests a preheat temp for metal core multilayer boards of 230 to 270 degrees F' (110 to 130 C'). It was scary at fir
Electronics Forum | Mon Nov 25 20:38:39 EST 2002 | davef
That's basically it. In a wonderful world, the oxides flow on top of the flux during heating through reflow. Obviously when compared to reflow soldering, you create much more dross with your wave by: * Pumping a large volume of very hot solder to h
Electronics Forum | Tue Jun 29 14:42:55 EDT 2004 | davef
You're correct, for every dumpster full of paper written about solder, there's a sentance written about fluxes. There's dribs and drabs about fluxes in most of the soldering books [ie, Manko, Klein-Wassink, Judd, Strauss, etc] and most of that is ve
Electronics Forum | Mon Aug 30 22:48:36 EDT 2004 | davef
Chapter 1 of Handbook of Machine Soldering: SMT and TH [Woodgate, RW; John Wiley & Sons, Inc.; 3e; 1996; ISBN 0-471-13904-1] is titled "A Brief Histroy of Machine Soldering". While a tantilizing title from the perspective of your project, it simply
Electronics Forum | Thu Aug 11 16:24:16 EDT 2005 | Sue PH
The soldering handbook that I use gives a 'rule of thumb' for best preheat temps for wave soldering. For multilayer brds that are metal core it suggests 110 to 130 degrees C topside temp to get the best solder fillet. We do a lot of multilayer meta
Electronics Forum | Thu Feb 16 15:19:38 EST 2006 | Samir
Read Ralph Woodgates', "The Handbook of Machine Soldering." Ralph is a true lead-head from way back, and his expertise is Wave Soldering. I know later editions have sections on that new fangled technique, "Reflow Soldering", but Ralph does a very c
Electronics Forum | Thu Apr 26 08:34:32 EDT 2007 | ck_the_flip
Pavel is right...Your Quality Group, customers, and Management will really appreciate Cpk's. We do Cpk's annually, or whenever a major mechanical change (motor, blower, etc) is made. Pavel is correct in saying that Cpk's on most modern convection o
Electronics Forum | Thu Nov 19 12:29:36 EST 2009 | mikesewell
Regarding more info on equipment - what you need is driven by your product and process requirements and tolerance for rework, labor amt, operator dependencies ..etc. EMPF offers a bootcamp for circuit card assembly, SMT mag publishes SMT 101 guide t
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