High frequency BGA connector

An electrical connector comprising:

• a housing comprising a surface, wherein the connector is configured for attachment to a printed circuit board with the surface facing the printed circuit board, and
• a plurality of contacts, each of the plurality of contacts having a mating end, a mounting end opposite the mating end and exposed adjacent the surface of the housing, and an intermediate portion that extends between the mating and the mounting end, wherein, for each of the plurality of contacts:
• the mounting end comprises an edge joining a first surface and a second surface parallel to the first surface, wherein the edge has a concave region;
• the contact comprises an anti-solder wicking coating on the first surface and the second surface adjacent the edge, and
• a plurality of solder masses preferentially fused to the concave regions of the plurality of contacts.

A method of manufacturing a connector comprising a housing comprising a surface, a plurality of contacts held by the housing, the plurality of contacts having mounting ends exposed adjacent the surface, wherein the mounting end of each of the plurality of contacts comprises a width in a direction parallel to the surface and an edge spanning the width of the mounting end, wherein the edge has a profile such that a length along the edge is longer than the width, the method comprising:

• applying solder flux to the edges of the mounting ends of the plurality of contacts;
• positioning a plurality of solder balls adjacent the edges of the mounting ends of the plurality of contacts;
• and
• heating the plurality of solder balls such that solder melts to form solder masses attached to the mounting ends of the plurality of contacts.