Abstract: A terminal unit includes one or more internal terminal, a dielectric member, and an external terminal. The internal terminal includes a contact portion for contacting a connection target (counterpart side connector), and a press-fit portion for press-fitting together with an inner conductor. The contact portion is provided at an axial direction one side, and the press-fit portion is provided at an axial direction other side. The internal terminal further includes an impedance adjustment section connected to a press-fit portion. The impedance adjustment section projects out to the axial direction other side with respect to the press-fit portion.

Abstract: Each of plural first terminal sets provided to a first connector includes a first signal terminal including a shielded portion-34, and a first ground terminal including a shielding portion. From out of two mutually adjacent first terminal sets, the shielding portion of the one first terminal set and the shielding portion of the other first terminal set are configured so as to be electrically contiguous by direct contact, or electrically contiguous through an electrical continuity interposer portion 82-provided to a second connector.

Abstract: A connector is provided that includes a terminal for which, taking a plate width direction of a first retained portion as a first plate width direction, a plate thickness direction of a second retained portion faces in a direction intersecting with a flat plane perpendicular to the first plate width direction, and that is easy to manufacture and is applicable to high speed transmission.

Abstract: In connectors including a housing having a separation wall, an impedance of a portion of a terminal in close proximity to the separation wall is suppressed from dropping excessively. Housings of the connector include a separation wall positioned between adjacent terminals. The separation wall includes a one-side opposing face and an other-side opposing face. Furthermore, the separation wall is formed between the one-side opposing face and the other-side opposing face, and includes a gap portion positioned between the adjacent terminals.