Female DC Jack Connector 2.1mm × 5.5mm (2 Pcs)

The Female DC Jack Connector 2.1mm × 5.5mm (2 Pcs) is a set of panel-mount or cable-mount DC power connectors designed to provide a secure and reliable connection between a DC power adapter and an electronic device. The connector is compatible with the industry-standard 5.5mm outer diameter and 2.1mm inner diameter DC barrel plug, making it one of the most widely used DC power connectors in electronics. It is commonly used in Arduino projects, CCTV systems, LED lighting, routers, robotics, embedded systems, IoT devices, communication equipment, laboratory instruments, and DIY electronics.

Each connector consists of a 5.5mm × 2.1mm female DC barrel socket, metal contact terminals, durable insulating housing, and solder or screw terminals (depending on the model). The internal metal contacts are made from high-quality conductive materials, such as nickel-plated brass or copper alloy, to ensure low electrical resistance, reliable power transfer, and long service life.

The working principle of the Female DC Jack Connector is simple. When a compatible 5.5mm × 2.1mm male DC plug is inserted into the female socket, the internal spring-loaded contacts securely grip the plug, creating a stable electrical connection. The center pin of the connector typically carries the positive (+) voltage, while the outer sleeve carries the negative (−) or ground (GND) connection. This center-positive configuration is the standard for most DC power adapters.

The connector supports a wide range of DC operating voltages, typically from 5V to 24V DC, depending on its current rating and application. It is suitable for low- and medium-power electronic devices and provides a convenient interface for connecting external power supplies.

The connector is compatible with standard DC power adapters, including:

• 5V DC Power Adapters

• 9V DC Power Adapters

• 12V DC Power Adapters

• 15V DC Power Adapters

• 24V DC Power Adapters

The Female DC Jack Connector is commonly used with:

• Arduino Uno, Nano, and Mega

• ESP32 and ESP8266 development boards

• Raspberry Pi accessories

• CCTV cameras

• LED strip lighting

• Routers and networking devices

• Embedded systems

• Robotics projects

• Motor driver circuits

• LCD displays

• Laboratory equipment

• Electronic prototypes

• Industrial control systems

Depending on the model, installation can be performed using screw terminals for quick wiring without soldering or solder terminals for permanent PCB or cable connections. The robust housing provides mechanical protection and helps prevent accidental disconnection during operation.

The applications of the Female DC Jack Connector 2.1mm × 5.5mm include DC power distribution, power adapter connections, CCTV installations, LED lighting systems, robotics, Arduino projects, IoT devices, embedded systems, laboratory equipment, automation systems, communication devices, testing equipment, educational electronics, engineering projects, prototype development, and DIY electronics.

The advantages of the connector include standard 5.5mm × 2.1mm compatibility, secure and reliable electrical connection, durable insulated construction, low contact resistance, easy installation, reusable design, compact size, wide voltage compatibility, strong mechanical retention, long service life, and compatibility with a wide variety of DC-powered electronic devices.

In conclusion, the Female DC Jack Connector 2.1mm × 5.5mm (2 Pcs) is a reliable and widely used DC power connector designed to provide a secure connection between DC power adapters and electronic equipment. Its standard dimensions, durable construction, simple installation, and compatibility with a broad range of electronic devices make it an excellent choice for robotics, embedded systems, IoT applications, educational electronics, automation systems, laboratory equipment, and DIY engineering projects.