DC Jack Female 5.5×2.1mm Power Connector
🔌 DC Barrel Jack Connector – Female, Panel Mount / PCB Mount
📝 Overview
The DC Barrel Jack Female Connector is a widely used power input interface for electronics projects and devices. It accepts a standard DC plug (usually 5.5mm outer / 2.1mm or 2.5mm inner diameter) and is commonly found in Arduino boards, Raspberry Pi power circuits, battery chargers, and custom enclosures. Available in panel mount or PCB mount variants.
⚙️ Key Features
Standard barrel size: 5.5mm outer / 2.1mm or 2.5mm inner diameter
Compatible with DC wall adapters (9V, 12V, 5V, etc.)
Available in panel-mount or through-hole PCB type
Center-positive polarity (most common)
Durable metal sleeve and plastic insulation
Threaded body for secure mounting on panels/enclosures (panel-mount version)
📦 Technical Specifications
| Parameter | Value |
|---|---|
| Connector Type | Female DC Barrel Jack |
| Inner Diameter | 2.1mm or 2.5mm |
| Outer Diameter | 5.5mm |
| Rated Voltage | Up to 24V DC |
| Rated Current | Up to 2A (typical), 5A (max for quality connectors) |
| Mounting Type | Panel-mount / PCB through-hole |
| Contact Material | Copper alloy / nickel-plated |
| Center Pin Polarity | Positive (unless otherwise specified) |
🛠️ Usage Tips
For Arduino and ESP32 boards, connect VCC and GND to the jack pins
Use heat shrink tubing or insulation when soldering wires to panel mount jacks
Ensure correct polarity to prevent damage to your circuit
Often used with 9V or 12V regulated adapters for safe powering
🎯 Common Applications
Power input for Arduino and development boards
Custom embedded systems
Robotics and IoT projects
Consumer electronics enclosures
DC power adapters and chargers