Patent ID: 9728878
Date: 2017-08-08
CPC Classifications: C23C,C25D,H01R

Claim:
1. A press-fit terminal comprising: a female terminal connection part provided at one side of an attached part to be attached to a housing; and a substrate connection part provided at the other side and attached to a substrate by press-fitting the substrate connection part into a through-hole formed in the substrate, wherein at least the substrate connection part has the surface structure described below; the surface structure comprises: an A layer formed as an outermost surface layer and formed of Sn, In, or an alloy thereof; a B layer formed below the A layer and constituted of one or two or more selected from the group consisting of Ag, Au, Pt, Pd, Ru, Rh, Os, and Ir; and a C layer formed below the B layer and constituted of one or two or more selected from the group consisting of Ni, Cr, Mn, Fe, Co, and Cu; wherein the A layer has a thickness of 0.002 to 0.2 μm, and a surface arithmetic average height (Ra) of 0.1 μm or lower; the B layer has a thickness of 0.001 to 0.3 μm; and the C layer has a thickness of 0.05 μm or larger.