Electronics Forum | Wed Oct 12 03:20:42 EDT 2011 | pinktoh
Any recommendations for a good PIN FRIENDLY PB-Free ROLO solder paste? My process is OSP double-sided reflow with PTH wave soldering.
Electronics Forum | Thu Mar 22 17:38:44 EST 2001 | davef
OK, lemme take a different angle on this, �cuz I forgot to touch on this when I first responded. I mentioned a study ["Evaluation of Low Residue Soldering for Military and Commercial Applications: A Report from the Low-Residue Soldering Task Force"
Electronics Forum | Mon Mar 06 22:30:12 EST 2006 | mainenetservices
We have a customer transitioning slowly to lead free due to necessity rather than a need to comply i.e. some of their BGAs can only be purchased Pb free only. So for this we would want to produce them a leadfree soldered PCB (not necessarly RoHS comp
Electronics Forum | Sun Mar 28 18:49:36 EDT 2021 | mekmat544
Hello, I would like to ask you if there is some formula how to calculate PTH hole and annual ring for pin in paste technology? Thank you. Mekmat.
Electronics Forum | Wed Nov 20 09:27:28 EST 2002 | davef
There's a fair number of issues with lead and bismuth solder alloys: * Lead and bismuth alloys can form a eutectic composition of Bi52Pb32Sn16 in the grain boundaries. Melting point of the eutectic alloy is 95�C [~96�C?]. * Fillet lifting of PTH du
Electronics Forum | Wed Aug 10 16:37:35 EDT 2011 | davef
Yes, there are ways to machine process boards like this. The devil is in the detail. In no particular order, your choices are: Process flow #1: * Print chipbonder on the surface mount side for SMT parts * Mount SMT components * Cure adhesive, if r
Electronics Forum | Tue May 16 21:25:23 EDT 2000 | Dave F
Alek & Ramon: What are we talking about: * Presentation: Feeders / trays / etc * Pick-up: Nozzels / grippers / etc * Reflowing paste for PTH parts Good luck Dave F
Electronics Forum | Thu Jul 20 12:22:33 EDT 2000 | Jeanette
I am just starting to investigate the fesability of this process and have very limited knowledge. Is there any problems inserting components on the same side as the paste on a PTH. When a component is inserted in this way is there a problem with th
Electronics Forum | Wed Mar 16 21:07:50 EDT 2011 | jacki
Hi pls let me know if someone is using dispensing machine to apply solder paste for PTH components. I am facing the test , applying the sufficient amount of sodler paste into 0.4mm pitch holes. in the other hands, pls advise me if you are working for
Electronics Forum | Mon Jan 28 19:58:58 EST 2002 | davef
Well, reflow certainly would increase your preheat, wouldn�t it? On the other hand, some PTH [and SMT] components cannot bear the heat of a reflow oven. Some boards will never see proper barrel fill, because of either: * Design of the board. * Sl
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