We have a small surface mount pwb to assemble which is plated with 20-25 microns (0.8 - 1mil) of electroless nickel and are concerned about solderability. Does anyone have any experience of solder paste fusing to electroless nickel without any gold coating? We use no clean so is there a suitable paste which does not require cleaning? Any help or advice would be greatly appreciated. Paul Gould [log in to unmask] Isle of Wight,UK