DC Power Jack (DC Barrel Socket)
ELECTRONIC COMPONENTS
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Description
DC Power Jack (DC Barrel Socket) A **DC power jack** is a **panel-mount connector** used to receive DC power from an external power adapter. It provides a secure connection for supplying power to electronic circuits, development boards, and embedded systems. Commonly available in **2.1 mm × 5.5 mm** or **2.5 mm × 5.5 mm** sizes, it is widely used in **Arduino, ESP32, Raspberry Pi power circuits, CCTV systems, and industrial control equipment**. Many versions include a **switching contact** that automatically disconnects an internal power source when an external adapter is plugged in.
