Patent ID: 8835771

Claim:
A PCB terminal manufactured by die-cutting a copper plate (meaning cupper plate or cupper alloy plate hereinafter) into a predetermined shape and then subjecting the resulting copper plate to a tin plating (meaning tin plating or tin alloy plating hereinafter) and a reflow treatment, the PCB terminal comprising: a fitting portion formed on one end to be inserted in a counterpart terminal; a soldering portion formed on the other end to be soldered to a circuit board; and an intermediate portion formed between the fitting portion and the soldering portion, wherein a Cu—Sn alloy coating layer and a Sn coating layer are formed as a surface coating layer on the fitting portion in this order, the Sn coating layer is smoothened by the reflow treatment, a part of the Cu—Sn alloy coating layer is exposed on an outermost surface, the Cu—Sn alloy coating layer has an average thickness of 0.1 to 3 μm, and the Sn coating layer has an average thickness of 0.2 to 5.0 μm, and the Sn coating layer includes a group of Sn coating layers having a width of 1 to 500 μm that are a plurality of essentially parallel lines, the Cu—Sn alloy coating layer are adjacently formed on both sides of the Sn coating layers each constituting the group of Sn coating layers, the adjacent Sn coating layers included in the group of Sn coating layers have an interval of 1 to 2000 μm therebetween, and a maximum height roughness Rz in a terminal insertion direction is at most 10 μm.