A wire-to-board connector is an electrical connector used to join individual wires or a wire harness to a printed circuit board (PCB). Its main purpose is to create a secure and reliable connection between off-board wiring and on-board electronic components.

This type of connector usually consists of two parts: a board-mounted header that is soldered onto the PCB, and a wire-mounted plug or housing that holds the crimped wires. When connected, they allow electrical signals or power to flow between the wires and the circuit board without the need to solder the wires directly to the PCB.

Wire-to-board connectors come in many sizes and configurations, varying in pin count, pitch, current rating, and locking mechanisms. They are widely used in consumer electronics, industrial equipment, automotive systems, and appliances, where easy assembly, maintenance, and reliable connections are important.

In simple terms, a wire-to-board connector makes it possible to connect external wires to a circuit board safely, efficiently, and in a way that allows for easy installation and removal.