Electronics Forum | Wed Dec 06 07:24:22 EST 2006 | davef
Successful solder paste overprint is a function of the solder paste rheology, solder mask and through hole component stand off. * Solder mask with a high surface energy will permit a larger overprint than a solder mask with a lower surface energy. In
Electronics Forum | Wed Jan 31 01:41:00 EST 2001 | pjc
Steve, I have no influence over conn design. We paste print-reflow solder two types of connectors. One is a 50 pin IDC w/ 0.5mm lead dia @ 2.54mm lead pitch and a chamfered pointed lead tip. The other is 32 pin DIP w/ 0.36mm lead dia @ 2.54mm pitch
Electronics Forum | Tue Nov 02 23:34:58 EST 1999 | chartrain
You appear to have two problems working against you at once. One is component lead corrosion that the no clean flux isn't aggressive enough to remove. Do a simple dip and look test. Flux the leads of a component and dip it into the molten solder for
Electronics Forum | Thu Sep 12 15:51:29 EDT 2013 | gregp
Hi Dean, Thanks for the feedback. I suppose I should reveal the nature of my query. Contact Systems was founded by my father back in 1970. I worked there from 1983 until we closed the doors back in 2009. I acquired the assets and intellectual pro
Electronics Forum | Thu Sep 12 12:45:56 EDT 2013 | deanm
> manual insert any remaining odd form components >> selective solder or hand solder if needed.
Electronics Forum | Wed Feb 07 11:27:25 EST 2007 | asoe
I just wonder anyone had the idea of solderability test for through hole by using a wetting balance equipment? I read the jstd002/003 however my feel is now our machine (metronelec st60) is not capable of this test?
Electronics Forum | Tue Sep 10 10:17:18 EDT 2013 | gregp
Hi Reese, Thanks for the feedback. So you have a fair amount of assemblies that are new designs with 10% through hole parts. Are these parts inserted manually? What is the soldering process?...wave solder?...selective solder? Do these components
Electronics Forum | Thu Oct 03 04:04:10 EDT 2002 | Bob Willis
SMTNet has a video tape and interactive CD ROM on Intrusive Reflow Soldering that you may want to check out. In addition there are some free inspection standards for pin in hole printing, placement and soldering available at http://www.dpmo-monitori
Electronics Forum | Fri Oct 04 12:02:53 EDT 2002 | mzaboogie
Hi Barry, One consideration that you may want to consider is the lead to hole ratio. The higher the ratio, the less solder is required to fill in the gaps and give you a fillet. Heat is a concern. You will need to ensure components will take the he
Electronics Forum | Sun Nov 23 20:37:36 EST 2014 | gregp
Hi J_Dub, thanks for the continued info...Of course selective soldering would be very time consuming for such a through hole assembly...but 18 minutes, wow...didn't realize selective soldering could take that long. I would like to know the approxima
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