Board-to-board connector

Board-to-board (BTB) connectors are used to connect printed circuit boards (PCB), electronic components that contain a conductive pattern printed on the surface of the insulating base in an accurate and repeatable manner. Each terminal on a BTB connector is connected to a PCB.
A BTB connector includes housing and a specific number of terminals.
The terminal is made from a conductive material (mostly copper alloy), and plated to improve conductivity and antirust.
Terminals transmit the current/signal between PCBs connected by BTB; the housing is made of insulating material (mostly plastic).
BTB connectors are divided up into four mounting types:
BTB connectors are selected by considering the mounting method, pin pitch, number of the rows (aka number of the ways), pin length, stacker height etc.