High-density electrical connectors and electrical receptacle contacts therefor

An electrical connector system for interconnecting circuit boards, comprising:

• a first electrical connector having a first dielectric housing and an array of mating contacts mounted in said first dielectric housing;
• a second electrical connector having a second dielectric housing and an array of electrical receptacles for electrical connection with said mating contacts;
• wherein each of said electrical receptacle comprises:
• a base section;
• two contacts, each contact having a leg section and a contacting section;
• wherein each leg section extends essentially perpendicularly from said base section to a distal end and each contacting section extends from the distal end of a leg section toward the other contact;
• wherein each leg section is wider near the base section than at its distal end;
• and
• whereby said contacts undergo cantilever and torsional deflection upon insertion of a mating contact between said contacting sections.