A protective connector includes a core assembly structure, mating pins and a mating coupling structure. The core assembly structure has circuitry mounted therein. The mating coupling structure substantially encases the core assembly structure and mates with another connector such that the mating pins of the protective connector are electrically coupled to pins of the other connector. The mating coupling structure is mechanically free-moving with respect to the core assembly structure such that forces applied to the mating coupling structure to mate the protective connector to the other connector are not applied to the circuitry within the core assembly structure.

A circuit board that is to be mounted in a connector socket includes a plurality of electrical connectors located along a side edge of the circuit board. Retention bosses are formed on first and second opposite sides of the circuit board, each of the retention bosses protruding from a surface of the circuit board and extending parallel to and adjacent to the first edge of the circuit board. When the first edge of the circuit board is inserted into a slot of a connector socket, contact surfaces of the first and second retention bosses contact top surfaces of the connector socket to help immobilize the circuit board with respect to the connector socket. Adhesive layers on the contact surfaces of the first and second retention bosses may adhere to the top surfaces of the connector socket to help hold the circuit board immobile with respect to the connector socket.

A circuit board that is to be mounted in a connector socket includes a plurality of electrical connectors located along a side edge of the circuit board. Retention bosses are formed on first and second opposite sides of the circuit board, each of the retention bosses protruding from a surface of the circuit board and extending parallel to and adjacent to the first edge of the circuit board. When the first edge of the circuit board is inserted into a slot of a connector socket, contact surfaces of the first and second retention bosses contact top surfaces of the connector socket to help immobilize the circuit board with respect to the connector socket. Adhesive layers on the contact surfaces of the first and second retention bosses may adhere to the top surfaces of the connector socket to help hold the circuit board immobile with respect to the connector socket.

A terminal-equipped electrical wire according to a first aspect of the present invention includes an electrical wire having a conductor and an electrical-wire coating member covering the conductor, and a crimp terminal having a crimp-terminal main body electrically connected to the conductor of the electrical wire, and an anticorrosive plating layer provided to a portion of a surface of the crimp-terminal main body, the portion being in contact with at least the conductor of the electrical wire. The conductor is made of aluminum or an aluminum alloy, and the anticorrosive plating layer is made of a NiZn alloy having a Zn content of 69 to 78% by mass.

A wired pipe transmission line for disposal in a wired pipe segment for use in subterranean drilling. The transmission line includes an assembly including an inner conductor and a dielectric layer including silicon dioxide (SiO.sub.2) insulating material surrounding the inner conductor and a protective layer that is formed of a rigid material and surrounding the dielectric layer. Also included is a method of forming a wired pipe transmission line.

A plug connector includes a plug housing coupled to a header connector and holding plug contacts mated with corresponding header contacts of a header connector. The plug connector includes an eCPA assembly coupled to the plug housing having an actuator movably coupled to the plug housing between a retracted position and an actuated position. The eCPA includes a plug eCPA terminal coupled to the actuator and movable by the actuator between a mated position and an unmated position for mating with a header eCPA terminal of the header connector. The eCPA includes an eCPA wire terminated to the plug eCPA terminal and routed to a remote electrical device. The plug eCPA terminal and the eCPA wire form a position assurance circuit with the header eCPA terminal in the mated position.

A plug connector includes a plug housing coupled to a header connector and holding plug contacts mated with corresponding header contacts of a header connector. The plug connector includes an eCPA assembly coupled to the plug housing having an actuator movably coupled to the plug housing between a retracted position and an actuated position. The eCPA includes a plug eCPA terminal coupled to the actuator and movable by the actuator between a mated position and an unmated position for mating with a header eCPA terminal of the header connector. The eCPA includes an eCPA wire terminated to the plug eCPA terminal and routed to a remote electrical device. The plug eCPA terminal and the eCPA wire form a position assurance circuit with the header eCPA terminal in the mated position.

A vibration resistant connector is disclosed. The connector employs a friction member to create a resistance between a coupling nut of the connector and a connector body of the connector that is disposed in a cavity formed by the coupling nut. In some embodiments, the friction member is in the form of an O-ring that encircles a portion of the connector body and that is compressed by the coupling nut.

A vibration resistant connector is disclosed. The connector employs a friction member to create a resistance between a coupling nut of the connector and a connector body of the connector that is disposed in a cavity formed by the coupling nut. In some embodiments, the friction member is in the form of an O-ring that encircles a portion of the connector body and that is compressed by the coupling nut.

An electrical connector includes a heat dissipation module with a first end and a second end opposed to the first end and two receptacle connectors located at the second end. The first and second ends define a transceiver-mating direction such that, when a transceiver is inserted into the first end of the heat dissipation module in the transceiver-mating direction, the transceiver mates with one of the two receptacle connectors, and in the heat dissipation module, air flows parallel to the transceiver-mating direction between the first and second ends and flows between the two receptacle connectors.