Pin terminal, connector, wiring harness with connector and control unit

A pin terminal, comprising:

• a bar-like base material;
• and
• a plating layer covering a predetermined region of the base material,
• wherein:
• the base material is made of pure copper or a copper alloy,
• the plating layer includes a tin-based layer made of metal containing tin,
• one end side of the base material includes a tip covering portion covering an entire region in a circumferential direction of the base material,
• the tin-based layer includes the tip covering portion,
• the tip covering portion includes a thin film portion and a thick film portion at positions different in the circumferential direction of the base material,
• the thin film portion is provided in contact with the base material,
• a maximum wetting force of the tip covering portion measured by a meniscograph tester is 0.25 mN or more,
• the tip covering portion includes an outer layer and an inner layer,
• the inner layer is made of an alloy containing tin and copper, and
• a thickness of the inner layer in the thin film portion is 0.1 μm or more.