- Use Sn63/Pb37 no-clean, leaded, solder paste. I usually get MG Chemicals brand, in a syringe. Keep it in the refrigerator so it's nice and cold before you stencil it. (obvs don't
maybe we will have some surprise with Sn63/Pb37 alloy, with its low melting temperature point and a relatively hot chip (ASIC miner)....