An electrical connector having a contact with an insulator therearound in an opening in a ground plane. A conductive band surrounds the insulator. A spring supports the band in the ground plane opening in a position electrically connected with the ground plane. A semiconductor diode is mounted in a longitudinal notch in the contact in a position electrically connected therefrom to the band. In one embodiment the insulator is slotted at the notch exposing the diode directly to the band. In another embodiment the band has a ground clip extending to the diode from the band and the contact notches spaced from the ground plane opening. This spacing is longitudinal.