Contact module having double-sided arranged contacts with insulator and respective equal length differential pair thereof

An electrical connector comprising:

• an insulative housing forming a receiving space therein and defining a front-to-back direction, a vertical direction perpendicular to the front-to-back direction, and transverse direction perpendicular to both the front-to-back direction and the vertical direction;
• a pair of contact modules commonly received within the receiving space, each of said contacts including:
• a vertical insulator defining opposite first and second sides in the transverse direction;
• and
• a group of first contacts and a group of second contacts secured to the insulator, each group of said first contacts and said second contacts including a plurality of grounding contacts and a plurality of differential pair contacts, each of said first contacts and said second contacts including a front mating section extending into a mating slot in the housing, a rear soldering section extending out of the hosing and a middle connecting section retained to the insulator, wherein
• the connecting sections of the first contacts essentially retained to a first side while the connecting sections of the second contacts essentially retained to the second side, and the contacting sections of both said first contacts and said second contacts are arranged in one row in the vertical direction in an alternate manner;
• wherein
• in each group of said first contacts and said second contacts, one differential pair and one grounding contact commonly form a unit, and the units of the first contacts and those of the second contacts are alternately arranged with each other in said one row along the vertical direction;
• wherein
• the first contacts are integrally formed within the first side of the insulator via an insert-molding process while the second contacts are assembled to the second side of the insulator.

An electrical connector comprising:

• an insulative housing defining a receiving space therein and defining a front-to-back direction, a vertical direction perpendicular to the front-to-back direction, and a transverse direction perpendicular to both the front-to-back direction and the vertical direction;
• a pair of contact modules commonly received within the receiving space in an opposite manner, each contact module including:
• a vertical insulator;
• a plurality of contacts secured to the insulator, each of said contacts including along the front-to-back direction, a front mating section, a rear soldering section and a middle retaining section therebetween wherein the connecting sections of all the contacts are located in a same vertical plane;
• and
• the contacts including a plurality of differential pair contacts and a plurality of grounding contact alternately arranged with each other;
• wherein
• in each differential pair of said differential pair contacts, the connecting section of a lower contact extends curvedly while that of an upper contact extends essentially straight differently so as to compensate a total transmission length difference between the upper contact and the lower contact in said differential pair;
• wherein said contacts include a plurality of outer contacts and a plurality of inner contacts respectively located at two opposite outer side and inner side of the insulator, both the outer contacts and the inner contacts have the corresponding differential pair contacts and the corresponding grounding contacts, and only the connecting sections of the outer contacts and those of the inner contacts are spaced from each other in two different vertical planes while the contacting sections of both the inner contacts and the outer contacts are located in a same vertical plane as well as the connecting sections;
• wherein
• in the connecting sections of both said outer contacts and said inner contacts are arranged in sequence as the grounding contact of the outer contacts, the differential pair of the outer contacts, the grounding contact of the inner contacts, and the differential pair of the inner contacts, etc.;
• wherein
• the outer contacts are integrally formed within the insulator via an insert-molding process while the inner contacts are assembled to an inner side of the insulator.