Abstract: An edge card electrical connector is adapted for receiving an edge of a printed circuit board having contact pads on at least one side of the board adjacent the edge. The connector includes an elongated dielectric housing having a board-receiving face with an elongated slot for receiving the edge of the printed circuit board. A plurality of terminal-receiving cavities are spaced longitudinally of the slot along at least one side thereof and separated by transverse walls. A plurality of first and second terminals are received in the cavities. The shapes of the terminals are such as to provide excellent capacitive coupling between the first and second terminals to improve electrical performance and reduce crosstalk of the connector.

Abstract: A card edge connector for mounting on a circuit board and removeably receiving a circuit card includes an elongated housing defining a card receiving slot. Numerous terminal receiving cavities intersect and extend to both sides of the slot. Alternate cavities include stamped reference (ground or power) terminals and signal terminals, all having downwardly extending board contacts and upwardly extending spring arms. There are numerous similar sets of face to face contacts, each including a reference contact parallel to and substantially overlying an opposed pair of signal contacts. The upwardly extending reference terminal spring arms include oversize pad portions for reducing crosstalk by increasing coupling between the reference and signal terminals. The circuit paths to the circuit board are in an array symmetrical about the centerline of the circuit card, with parallel inner lines of circuits containing only reference contacts and outer lines of circuits containing only signal contacts.