Electrical connector assembly

摘要

A board-to-board connector assembly for directly connecting a daughter board to a mother board includes a plug connector having an integrally formed dielectric housing with an outer wall, a bottom wall defining a first mating face and six ridges projecting from the first mating face. A number of first contacts are mounted to two sides of each of the ridges and extend through a bottom surface of the bottom wall for being directly soldered to the daughter board. A receptacle connector has an integrally formed dielectric housing with a second mating face, a bottom face opposite the second mating face and six grooves. A number of second contacts are mounted to the housing in side walls of the grooves and extend through the bottom surface for being directly soldered to the mother board. When the plug connector is connected to the receptacle connector, the ridges are received in the grooves, the first contacts engage with the second contacts, the first mating face abuts against the second mating face and the bottom surface of the receptacle connector is flush with a top surface of the outer wall of the plug connector.