Electronics Forum | Mon Jul 16 09:53:36 EDT 2007 | ed_faranda
Yes, you can use lead-free parts in a leaded process. And the other is true as well, no-lead free parts in a leaded process. BUT, you should not use leaded parts through a non-lead wave solder process and of course, your board will not be RoSH.
Electronics Forum | Mon Jul 16 10:17:22 EDT 2007 | realchunks
Yes you can use no-lead parts in a leaded process. Your solder joints will be weaker than they once were unless you change your solder paste. You can try to improve this by running a hotter reflow temp, but be careful since your flux was not design
Electronics Forum | Thu Jul 19 11:59:21 EDT 2007 | hussman
Phil is wrong. In the real world, we know that part mfgers have not changed every one of their parts to make them "high temp". They just changed the plating. Anyone who thinks otherwise, has never run a profile or touched a warm board coming out o
Electronics Forum | Mon Jul 16 10:51:09 EDT 2007 | patrickbruneel
D. Hillman, et al., �The Impact of Reflowing a Pb free Solder Alloy Using a Tin/Lead Solder Alloy Reflow Profile on Solder Joint Integrity,� International Conference on Lead-free Soldering, CMAP, Toronto, Ontario, Canada, May 24-26, 2005, http://www.
Electronics Forum | Fri Jul 20 08:09:09 EDT 2007 | chrispy1963
In passives I dont know if anything changed at all other than the terminal plating. As for Active components there has been much engineering done to allow for the extra heat needed to liquify say SAC305 or other lead free pastes without damage to th
Electronics Forum | Fri Jul 20 11:48:22 EDT 2007 | muse95
I agree with Chris. Not all but SOME components definitely had to change to be able to withstand higher heat. I would watch out for some plastic connectors, possibly some active components, and definitely many electrolytic caps. Older stock compone
Electronics Forum | Thu Jul 19 04:38:33 EDT 2007 | chrispy1963
I took a Lead Free troubleshooting Class at SMTA in Chicago last September taught by Phil Zarrow. He told us during that seminar that its not a good practice to cross contaminate Leaded and Lead Free components but IF it is necesary than using lead
Electronics Forum | Fri Apr 07 14:37:56 EDT 2006 | muse95
Yes, sorry, I have no detailed experience with wave-soldering. Probably if you use Pb components with Pbfree wave, you risk contaminating your wave solder pot. I don't know how much it would take or what all the dangers of that are, other than the
Electronics Forum | Thu Jul 15 07:08:29 EDT 2004 | pcbrown
Basically, it's a tilting problem of certain devices. Usually with axial by-pass caps tilting, which pulls the lead up through it's mounting hole. Other problems with components with leads cut to lenght to eliminate post-wave trimming. All suggestion
Electronics Forum | Mon Jul 19 08:52:02 EDT 2004 | Omega
Try spraying flux on top of the loaded PWB when you put it on the conveyor. The tackiness of the flux does a pretty fair job of keeping the axial leaded parts down to the board. This takes more cleaning, but it has worked wonders for me on assemblies
