Pin header is a kind of electrical connector, this connector is widely used in the PCB (printed circuit board) function of electronics or instrumentation, as a bridge between two blocked PCBs, used for current or signal transmission.
Pin header connectors include several different connection methods. Usually, one side is a series of pins soldered to the PCB. They can be at right angles to the PCB surface (usually called "straight") or parallel to the surface of the board (confusingly called "right"). -Angle" pins). This type of connector has a variety of pitches and can have any number of single rows of pins.