5.5 mm × 2.5 mm Male DC Power Plug — Short Type

The 5.5 mm × 2.5 mm male DC barrel plug is a compact, reliable connector ideal for repairing or replacing plugs on mains power adapters and for building custom power leads in electronics projects. Featuring a short 9 mm barrel, moulded strain relief, and solder termination, it’s a solid choice for engineers and hobbyists working with low-voltage DC systems, development boards, and electronics modules.

✅ Key Features

• Standard size: 5.5 mm (OD) × 2.5 mm (ID) DC barrel plug
• Short type: 9 mm barrel length for compact builds 📐
• Moulded strain relief for improved cable durability
• Strong plastic barrel housing for everyday use
• Solder termination for a secure, low-resistance connection

📐 Technical Specifications

• Connector type: Male DC coaxial (barrel) plug
• Outer diameter (OD): 5.5 mm
• Inner diameter (ID): 2.5 mm
• Barrel length: 9 mm (short type)
• Termination: Solder
• Housing: Strong plastic barrel with moulded strain relief
• Polarity: Determined by wiring; verify with your device and power supply

🔧 Typical Applications

• Repairing or replacing plugs on mains adaptors and DC power supplies
• Building custom power leads for electronics components and modules
• Prototyping with microcontroller-based projects (e.g., Arduino-compatible shields or modules using 5.5 × 2.5 mm jacks)
• Powering peripherals and devices in Raspberry Pi and Arduino ecosystems (verify jack size and voltage)
• General low-voltage DC applications: LED drivers, sensor hubs, small enclosures

📎 Compatibility Notes

• This plug fits jacks sized 5.5 mm OD × 2.5 mm ID.
• Many development boards use 5.5 × 2.1 mm jacks; check your device’s connector before purchase.
• Always confirm polarity and voltage to protect your electronics.

🧰 Soldering Tips

• Pre-tin wires and terminals for a clean, reliable joint.
• Observe correct polarity (commonly center-positive on many adapters, but verify).
• Use heat-shrink or insulation as needed for strain relief and safety.

Ideal for building robust DC connections in Arduino and Raspberry Pi projects, custom microcontroller systems, and general electronics prototyping where a 5.5 × 2.5 mm plug is required.