An electric connector set having an impedance adjustment function and a mounting structure, and including a first connector that mounts onto a first circuit board, and a second connector that mounts onto a second circuit to be insertable into and withdrawable from the first connector in an insertion-withdrawal direction. The first connector includes a first connection terminal having first mounting portions to mount onto first land portions on the first circuit board and a first insulating member that holds the first connection terminal. The second connector includes a second connection terminal having second mounting portions to mount onto second land portions on the second circuit board and a second insulating member that holds the second connection terminal. In an engagement state of the electric connector set, the first mounting portions oppose the second mounting portions and overlap the second mounting portions as viewed in the insertion-withdrawal direction.

A cable termination that provides low signal distortion even at high frequencies. Conductive elements of the cable are fused to edges of signal conductors in a cable connector or other component terminating the cable. For terminating a differential pair, the conductive elements of the cable may be terminated to opposing edges of a pair of signal conductors in the cable termination. The conductive elements may be shaped such that the spacing between signal paths passing through the conductive elements of the cable and into the signal conductors of the cable termination is uniform.

A cable termination that provides low signal distortion even at high frequencies. Conductive elements of the cable are fused to edges of signal conductors in a cable connector or other component terminating the cable. For terminating a differential pair, the conductive elements of the cable may be terminated to opposing edges of a pair of signal conductors in the cable termination. The conductive elements may be shaped such that the spacing between signal paths passing through the conductive elements of the cable and into the signal conductors of the cable termination is uniform.

An electrical plug-in connector for differential signal transmission, having an external conductor contact element, a dielectric and at least one internal conductor contact element pair for differential signal transmission. The dielectric extends along a longitudinal axis through the external conductor contact element. The internal conductor contact element pair has a first internal conductor contact element and a second internal conductor contact element which extend along the longitudinal axis through the dielectric. The external conductor contact element and/or the dielectric have a compensation geometry in order to compensate for an asymmetry of the internal conductor contact element pair with respect to the longitudinal axis. As an alternative or in addition, it is provided that the internal conductor contact element pair has a compensation geometry in order to compensate for an asymmetry of the external conductor contact element and/or of the dielectric with respect to the longitudinal axis.

An electrical plug-in connector for differential signal transmission, having an external conductor contact element, a dielectric and at least one internal conductor contact element pair for differential signal transmission. The dielectric extends along a longitudinal axis through the external conductor contact element. The internal conductor contact element pair has a first internal conductor contact element and a second internal conductor contact element which extend along the longitudinal axis through the dielectric. The external conductor contact element and/or the dielectric have a compensation geometry in order to compensate for an asymmetry of the internal conductor contact element pair with respect to the longitudinal axis. As an alternative or in addition, it is provided that the internal conductor contact element pair has a compensation geometry in order to compensate for an asymmetry of the external conductor contact element and/or of the dielectric with respect to the longitudinal axis.

An electrical connector is used to electrically connect a first component and a second component, including: an insulating body, having an insertion slot for the first component to insert backward therein; multiple terminals, having at least one pair of first signal terminals. Each terminal has a contact portion and a tail portion provided in the front-rear direction. The contact portion is provided relatively in front of the bottom surface and protrudes into the insertion slot to be electrically connected to the first component. The tail portion is electrically connected to the second component. Each terminal further has a connecting portion located between the contact portion and the tail portion. An insulating block is used to fix the terminal. The connecting portion of each terminal extends forward from the front surface of the insulating block and passes beyond the bottom surface. A portion of the connecting portion of each terminals not passing forward beyond the bottom surface is defined as an adjusting portion. A medium between the two adjusting portions of each pair of first signal terminals is completely a first medium. A dielectric coefficient of the first medium is less than a dielectric coefficient of the insulating body.

A connector assembly for connecting a cable to an electrical component includes a plug unit and a mating plug unit, which each have an outer conductor element, an insulator element and an inner conductor element. The insulator element is disposed within the outer conductor element and includes an inner conductor channel in which the inner conductor element is disposed. The insulator element of the plug unit forms a plug profile that extends around the inner conductor channel and has at least one projection and/or depression. The insulator element of the mating plug unit forms a mating plug profile that corresponds to a negative of the plug profile. The plug unit and the mating plug unit are connectable to one another in such a way that the plug profile and the mating plug profile rest against each other, at least in some areas.

A first inner housing and a second inner housing are combined to form a combined inner housing, in which the first inner housing having a plurality of mutually independent insertion holes is formed of a first dielectric or an electric conductor, and the second inner housing having a plurality of mutually independent terminal-housing chambers is formed of a second dielectric. Terminals of a twisted-pair cable are inserted and housed one-to-one in the terminal-housing chambers of the combined inner housing. The twist-released sections of sheathed cables of the twisted-pair cable are inserted and housed one-to-one in the insertion holes of the combined inner housing. The combined inner housing is covered with a shield member, and the combined inner housing and the shield member are housed in an outer housing.

A terminal module includes: a conductive terminal to be contacted and cooperated with a mating terminal, the conductive terminal including a base and a mating end at a front of the base, the mating end including a contact portion to be contacted and cooperated with the mating terminal and a front end portion at a front end of the contact portion; and a plastic part, wherein the plastic part is arranged at the front end portion so that a gap between the contact portion of the conductive terminal and the mating terminal is less than 0.1 mm after cooperated.

An electrical connector includes: an insulating housing; and plural terminals held in the insulating housing and arranged in terminal pairs, each of the terminals including: a holding portion held in the insulating housing; a cantilever extending forward from the holding portion, a slot being provided on the cantilever; a contact portion at a front of the cantilever; and a mounting portion for mounting on a circuit board; wherein the slot extends to the contact portion; and in each terminal pair, a first distance from a center of the contact portion of one terminal thereof to a center of the contact portion of the other terminal thereof is less than a second distance from a center of the mounting portion of one terminal thereof to a center of the mounting portion of the other terminal thereof.