Topic:Parts sources; Mouser seems the best first try. Lower prices than "D". also, odd stuff from "All Electronics", Jameco", and "Futurlec". On that last one, make sure you go to the USA one. My son has a chemical engineering degree from Johns-Hopkins, and he is the VP- Sales for a PCB company. He said that hand-soldering lead-free is 100 times harder than lead-tin. One problem is that if you buy a lead-free PCB that has all the surface-mount parts already mounted, and the PCB is lead-free, then you have to add the remaining thru-hole parts by hand. Then you have to pay attention to "Wetting". Forwarned is forarmed!
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