Electrical connectors (10-15) including a row of conductive interconnect elements in the form of slugs (52) which extend through openings in a block of insulating material (30) and which are associated with resilient wadded elements (54) to connect conductive pads of circuit boards (17-20). A wall portion (49,50) of conductive material is positioned in parallel relation to the row of elements to provide a ground plane and an air dielectric (86) is provided along the length of each element to cooperate with the dielectric of the block and obtain a desired characteristic impedance. <IMAGE>
