Electronics Forum | Wed Nov 30 15:15:34 EST 2016 | warwolf
Any lead free will eat a leaded designed wave soldering machine. But SN100c will eat it the slowest, our soldering tips used to only last 3 months with SAC305 when we changed to SN100c solder wire we are having around 9 months tip life. Our wave sol
Electronics Forum | Thu Aug 24 03:20:36 EDT 2006 | aj
we had problems with fillets and shifting aswell,but the recommended print aperture is reduce thermal pad by 35% and offset the lead print by 3thou...i.e. 3thou over hang on outer edge of lead which also moves the paste 3thou in from the inner edge .
Electronics Forum | Sun Jun 22 13:24:49 EDT 2014 | davef
I don't know. We never had craziness like this before lead-free. You should have the yellowish-metal analyzed to be sure. Guessing: You're seeing this color on the terminations of components, not on the bulk of the SnX solder connection. If that's
Electronics Forum | Thu May 10 16:11:46 EDT 2012 | comatose
I have a rarely used Wenesco that's about 4 years old that I would be willing to get rid of. Its filled with lead free solder. We just bought a full size automatic selective solder machine which arrives next month, so we'll go from using it once in
Electronics Forum | Sun Nov 27 05:04:02 EST 2016 | pmcg
Never used stainless pots as when we converted to lead free we changed all the pots to titanium. Been using SN100C for many years now, very good results, also use it in reel form in our selective solder machines with great results. Bear in mind the
Electronics Forum | Fri Sep 08 11:50:39 EDT 2006 | Rob
SN100C is designed not to corrode your pot, and can be used on standard solderpots (after a proper clean out), whereas SACX is still corrosive and if the coating is compromised then could cause problems. Get it in writing from the supplier that the
Electronics Forum | Tue Jul 21 09:53:13 EDT 1998 | Steve Brown
Here at M/A-Com we use lead free solder pastes for two purposes, environment and prevention of secondary reflow in subsequent processes. The UK engineering journals all report the trends towards lead free alloys, especially in the telecommunications
Electronics Forum | Mon Dec 13 21:11:53 EST 1999 | Curtis T.
Steve, I have done countless board profiling and oven reflow profiles. Here are the critical factors on you need to address. What is your board surface finish, if it is something like an OSP it will need a good amount of an active (aqueous) flux to
Electronics Forum | Wed Jan 14 23:08:19 EST 1998 | Ron Costa
Place your components directly on the PCB without using solder paste,unless your using high temp. solder spheres then you should use paste. If eutectic solder spheres are used try fluxing the BGA area and attach it directly to the board. This will re
Electronics Forum | Thu Jul 10 13:02:18 EDT 2014 | clydestrum
I'm not sure what happened to my post, but we think to have got the situation under control. The solder joints on the boards looked terrible. I can only describe it as unburnt flux, maybe. (like if you took a spoonful of solder and sprayed flux direc
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