5.5mm x 2.1mm DC Male Jack

5.5 mm × 2.1 mm DC Male Jack

The 5.5 mm × 2.1 mm DC Male Jack is a commonly used DC barrel power connector for supplying DC power to electronic circuits and devices. The dimensions refer to the outer diameter (5.5 mm) and inner pin diameter (2.1 mm). It is commonly used with 5 V, 9 V, 12 V, and other low-voltage DC power supplies.

Description:

This connector is designed to mate with a 5.5 mm × 2.1 mm DC female socket. In the most common configuration, the center pin is positive (+) and the outer barrel is negative (−), although polarity should always be verified before connecting.

Main Features:

• 5.5 mm outer diameter
• 2.1 mm inner diameter
• Male DC barrel connector
• Common center-positive configuration
• Suitable for low-voltage DC power connections
• Simple plug-and-play connection
• Compact and easy to install
• Commonly used with adapters, Arduino projects, LED circuits, CCTV equipment, and other electronic devices

Typical Specifications

Common Applications

• DC power adapters
• Arduino and microcontroller projects
• LED strips and modules
• CCTV and security equipment
• Routers and networking equipment
• DIY electronic power supplies
• Battery-powered projects

Important: The 5.5 × 2.1 mm dimension only specifies the physical connector size. Voltage and current ratings vary by the particular jack, so check the manufacturer’s specification before using it in a power circuit.