Board connecting terminal and holding structure of circuit board

A holding structure of a circuit board that mounts on a holder the circuit board to which a board connecting terminal including a contact which comes into contact with a mate side terminal and an indent which comes into contact with a pad formed on the circuit board is attached, the board connecting terminal further comprising:

• a terminal attaching part connected to the indent to attach the board connecting terminal to the circuit board and
• an engaging piece connected to the contact and having a part held by the holder on which the circuit board is mounted, an engaging piece accommodating groove being formed in the holder which accommodates a part of the engaging piece, wherein in the terminal attaching part, when the board connecting terminal is attached to the circuit board, a part of the terminal attaching part enters a through hole passing through the circuit board in a thickness direction thereof to restrain the indent from moving in a planar direction of the circuit board, when the circuit board is mounted on the holder, the engaging piece is accommodated in the engaging piece accommodating groove to restrain the contact from moving in the longitudinal direction and in the transverse direction of the contact and when the circuit board is mounted on the holder, a part of the contact abuts on an upper surface of the holder and a part of the terminal attaching part abuts on a lower surface of the circuit board to restrain the contact and the terminal attaching part from moving in the thickness direction of the circuit board.