Electrical connector having improved characteristic impedance

An electrical connector comprising:

• an insulative housing defining a mating port for mating with another connector, and a connecting port for connecting to a conductive part;
• a plurality of contacts retained in the housing, each of said contacts stamped from sheet metal having a thickness thereof, each of said contacts having a contacting section in the mating port, a tail section in the connecting port, and a retaining section therebetween;
• wherein
• a cross-sectional area around the retaining section is larger than corresponding cross-sectional areas in both the contacting section and the tail section, and a dimension along a thickness direction around the retaining section is larger than corresponding dimensions along the thickness direction in both the contacting section and the tail section:
• wherein
• the dimension in the thickness direction around the retaining section is at least twice that around either the contacting section or the tail section;
• wherein
• the retaining section is equipped with a pair of prominences, respectively on two sides, laterally facing to each other to form a larger cross-sectional area and a larger dimension in the thickness direction than those in the contacting section and the tail section;
• wherein
• the cross-sectional area around the retaining section is of U-shaped configuration with a gap between main portions of two opposite arms of the U-shaped configuration in a transverse direction, said gap having a width dimension in said transverse direction and said width dimension being similar to a thickness of the contact;
• wherein
• the dimension in the thickness direction around the retaining section is similar to a sum of the dimensions of the contacting section and a mating terminal of said another connector in the thickness direction or a sum of the dimensions of the tail section and the conductive part in the thickness direction.