DC Barrel Power Jack Male Connector 2.1mm x 5.5mm

DC Power Jack Male Barrel Plug Connector 2.1mm x 5.5mm

The 2.1mm x 5.5mm DC Power Jack Male Barrel Plug Connector is an essential component for connecting direct current (DC) power supplies to various electronic devices and circuits. Operating as a standard male jack, it features an inner central pin hole of 2.1mm and an outer barrel diameter of 5.5mm. Designed with an unscrewable protective outer casing, the connector exposes dual internal metal terminals for easy wire soldering, along with a integrated crimp strain relief structure. This ensures a stable electrical connection while preventing internal wire damage from bending or pulling. Whether you are assembling power cables for robotics, microcontrollers, LED lighting, or general DIY electronics, this component is a reliable standard in BD for making clean power cable connections without needing pre-molded adapter assemblies.

Specifications

Features

• Standard 2.1mm center pole and 5.5mm outer shell dimensions for widespread compatibility.
• Unscrewable outer jacket for easy access to internal connection points.
• Solid solder tabs for strong electrical contact and durability.
• Built-in metal crimp strain relief to hold incoming wires securely.
• Compact 46mm cylindrical profile with textured grip for easy plugging and unplugging.
• Cost-effective solution for power wire repairs and custom cable production in Biggan Project experiments.

Applications / Use Cases

• Powering Arduino boards, ESP32 microcontrollers, and DIY robotics projects.
• Connecting 12V DC power adapters to LED strip lighting controllers.
• Customizing cable lengths for CCTV camera power distribution systems.
• Repairing frayed or damaged cables on standard DC wall power adapters.
• Constructing portable battery power packs for outdoor science project demonstrations in Bangladesh.

User Guide / How to Use

• Unscrew the black outer sleeve from the connector assembly and slide it onto your power wire first.
• Strip approximately 5mm of insulation from the positive and negative leads of your wire.
• Identify the positive terminal (center pin lead) and negative terminal (outer shield tab).
• Solder the positive wire to the center lug and the negative wire to the outer grounding lug.
• Crimp the metal rear clamp over the outer wire insulation to provide mechanical strain relief.
• Thread the black plastic sleeve back over the terminal assembly and tighten securely.

Frequently Asked Questions (FAQs)

• Q: What is the center pin dimension for this DC jack?
  A: The center pin hole size is 2.1mm, matching standard 2.1mm female DC barrel sockets.
• Q: How do I connect wires to this plug?
  A: Wires are connected by unscrewing the outer cover and soldering the stripped leads directly onto the internal metal terminals.
• Q: Is this connector suitable for AC power?
  A: No, this connector is designed specifically for low-voltage Direct Current (DC) power applications.
• Q: Can this be used with a 5.5mm x 2.5mm socket?
  A: While the outer diameter fits, a 2.1mm center pin plug may fit loosely or fail to make electrical contact with a 2.5mm socket pin.

Challenges and Considerations

• Requires basic soldering equipment and skill for proper wire attachment.
• Correct polarity must be verified with a multimeter before powering devices to avoid reverse voltage damage.
• Avoid applying excessive heat while soldering to prevent melting the inner insulating core.

Compatibility

• Compatible with standard 2.1mm x 5.5mm female DC barrel jacks.
• Fits common 5V, 9V, 12V, and 24V desktop or wall-mount DC power supply adapters.
• Ideal for standard electronic breadboards and prototyping shields using female DC sockets.

Future Enhancement Options

• Adding heat shrink tubing over soldered joints prior to assembling the sleeve for extra insulation.
• Pairing with inline toggle switches to create custom switched power lines.
• Integrating with inline fuses for additional circuit protection against overcurrent conditions.

Benefits

• Provides a neat and professional finish to custom power cabling.
• Ensures strong physical retention through the built-in mechanical crimp relief.
• Allows easy recycling and modification of existing power cables and wall adapters.
• Offers high durability with a compact footprint suited for tight project enclosures.

The 2.1mm x 5.5mm DC Power Jack Male Barrel Connector is a dependable and essential hardware component for anyone assembling or repairing low-voltage power connections. Its simple solder-terminal layout and integrated strain relief make it a practical choice for long-lasting, reliable operation in custom electronic builds and everyday power setups across BD.

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