Electrical connector assembled component, plug connector, and receptacle connector

A plug connector to be mounted on a circuit board for connecting a receptacle connector, comprising:

• a plurality of terminals having plug contact portions that contact with receptacle contact portions of mating terminals of the receptacle connector;
• and
• a plug housing that holds the terminals along a side direction,
• wherein said plug housing includes a fitting portion that is fitted into a receptacle space of the receptacle connector,
• said terminals include an edge terminal disposed on one end portion of the fitting portion in the side direction, and
• said edge terminal includes a plug side plate portion extending in the side direction, a plug edge plate portion extending in an edge direction perpendicular to the side direction, and a locking portion formed on the plug edge plate portion for engaging with a locked portion of one of the mating terminals.

A receptacle connector to be mounted on a circuit board for connecting to a plug connector, comprising:

• a plurality of mating terminals having receptacle contact portions that contact with plug contact portions of terminals of the plug connector;
• and
• a receptacle housing that holds the mating terminals along a side direction,
• wherein said receptacle housing includes a pair of side walls extending in the side direction, a pair of edge walls extending in an edge direction perpendicular to the side direction for connecting the side walls, and a receptacle space surrounded with the side walls and the edge walls for receiving the plug connector,
• said mating terminals include an edge mating terminal disposed on one end portion of the receptacle housing in the side direction, and
• said edge mating terminal includes a receptacle side plate portion extending in the side direction, a receptacle edge plate portion extending in the edge direction, and a locked portion formed on the receptacle edge plate portion for engaging with a locking portion of one of the terminals.