Electronics Forum | Fri Aug 07 01:02:51 EDT 1998 | zeek - just wanna to get a word in here
| | I am looking for advice or information from anyone about the possible reliability problems associated with epoxy on solder pads of discrete devices. Will the epoxy expand and lift over time, Will there be adverse reaction between the solder and t
Electronics Forum | Mon Feb 25 21:13:12 EST 2002 | davef
No, none of us can tell you what is the acceptable level of halide content or contamination in flux residue. The level of harmful residues on your product helps determine the reliability of your product. We know nothing of your product, its custome
Electronics Forum | Wed Sep 12 20:46:16 EDT 2007 | Mag10
We've configured SMT and Wave lines such that each line can run either No-Clean and Water soluble process. As we are doing cleanliness study, an observation is there may be cross contamination when we share the Rework benches or PCB trays between No-
Electronics Forum | Mon May 09 13:55:33 EDT 2016 | dyoungquist
Omega Aqua Clean LPH. The flux we use in our selective solder process is Kester 2235. Our process cleans water soluble flux very well if cleaned within 24 hours of the boards being processed. We have sent boards off for cleanliness testing per sta
Electronics Forum | Wed Apr 21 14:38:38 EDT 1999 | Justin Medernach
| Does anyone have any experience with soldering 50mil pitch BGA's that have a via in the pad, the size is .012 The via will be masked off on the bottom side of the board. Need to know what precautions or problems if any I might encounter. The proces
Electronics Forum | Wed Sep 05 17:37:56 EDT 2001 | seand
Hello Jeff, If you have components on your board be careful of how low the frequency is that you will be applying to your board. Ultrasonics are great for cleaning stencils and bare boards at around 40kHz. These frequencies (and Lower)may however
Electronics Forum | Tue Oct 22 16:30:50 EDT 2013 | joeherz
Dear Lord, We have had similar challenges with customer requirements related to ionic testing. You have determined that you cannot get a reliable result from testing at the stage where the adhesive has been applied. That option is out. Assuming
Electronics Forum | Thu Aug 05 13:03:35 EDT 1999 | Dave Weihrauch
| | | | Has anyone out there tried to parylene coat plastic parts prior to soldering them to a pcb? I'm looking at several potential applications where fewer than 5% of my components on a pcb are plastic, yet from a reliability aspect (environmental
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