Shielded electrical connector for mounting on a circuit board with an inner conductor and outer conductor

A shield connector installed on a circuit board, the shield connector comprising:

• a plurality of inner conductors;
• a plurality of outer conductors surrounding the inner conductors;
• and
• a dielectric disposed between the inner conductors and one of the outer conductors, wherein
• each inner conductor includes an extension portion extending from the dielectric toward the circuit board,
• the one of the outer conductors includes (i) a plurality of first opening portions adjacent to each other in a width direction, (ii) a bottom surface where the first opening portions are open and (iii) a back surface facing backward,
• the one of the outer conductors includes a plurality of mounting portions that abut against a top surface of the circuit board, at least one of the mounting portions being between adjacent ones of the inner conductors to prevent crosstalk between the inner conductors,
• each extension portion includes a board connection portion that protrudes from a corresponding one of the first opening portions to be connected to a conductive portion of the circuit board, and is disposed in front of the back surface,
• a plurality of retraction recessed portions is formed in the bottom surface of the one of the outer conductors, and
• each retraction recessed portion extends backward from a back edge portion of a corresponding one of the first opening portions in the bottom surface of the one of the outer conductors and is open in the back surface.