Short length compliant pin, particularly suitable with backplane connectors

An electrical connector comprising:

• a support frame, a plurality of columns of conductive terminals supported in spaced apart relation in the support frame;
• the terminals each including a tail portion for mounting to a circuit board, a contact portion for mating with a mating connector, and a body portion interconnecting the tail and contact portions together;
• the terminals being divided into two distinct sets of signal and ground shield terminals, the signal terminals being aligned in differential signal terminal pairs with the terminal body portions edge-to-edge within a column, the differential signal terminal pairs being separated from each other within a column by a single ground shield terminal;
• the body portions of the terminals having different lateral widths measured in the direction of the columns, the body portions of the terminals in one column having a predetermined transverse spacing with respect to the body portions of the terminals of an adjacent column, the body portions of the terminals in each column having non-uniformly spaced longitudinal center lines;
• the tail portions of the terminals of each column being laterally spaced apart with a uniform spacing, each tail portion including a compliant press-fit mounting pin that has a length which does not exceed about 1.0 mm.