Plug connector, receptacle connector, and joint-type connector

摘要

A plug connector, comprising a housing 12 comprising a flat plug portion 14 extending in the left-right direction for insertion into a plug accommodation space 54a of a housing 52 of a receptacle connector 50 serving as a joining mate, and a signal contact 22 provided at the upper surface of the plug portion 14 and connected to a signal line (signal terminal on a board), the configuration of the plug connector being such that the signal contact 22 is brought into contact with a signal contact 62 of the mating connector in a state where the housing 12 has been joined to mating housing 52, wherein a power source contact 24 for connection to a power source line (power source terminal on a board) is provided at the lower surface of the plug portion 14.