Electrical connector having improved shielding means

An electrical connector for electrically connecting an IC package with a printed circuit board (PCB), comprising:

• at least one contact unit, comprising an insulating body and a plurality of contacts retained therein;
• and
• at least one housing unit receiving the contact unit, the housing unit comprising a metallic shielding member extending in a longitudinal direction and an insulating member retaining the shielding member;
• wherein;
• the insulating member comprises a first portion and a second portion opposite to each other in a vertical direction perpendicular to the longitudinal direction, the insulating body locates between the first and second portions, both the insulating body and the insulating member are made from plastic, and wherein the dielectric constant of the insulating body is less than that of the insulating member.

An electrical connector comprising:

• a housing unit including shielding structures in matrix along longitudinal and transverse directions angled to each other to form thereof a plurality of chambers each surrounded by said shielding structures;
• a contact unit including a plurality of contacts disposed in the corresponding chambers, respectively, each of said contact defining two opposite contacting ends in a vertical direction perpendicular to both said longitudinal direction and said transverse direction;
• and
• a metallic plate extending along a horizontal plane configurationally defined by said longitudinal direction and said transverse direction, with corresponding through holes to allow said contacts to extend therethrough, without laterally contacting the metallic plate, in the vertical direction so as to divide the corresponding chamber into opposite upper and lower cavities in the vertical direction for reducing EMI (Electro-Magnetic Interference) along the vertical direction.