2x 2.1mm x 5.5mm Male Power Plug Jack DC Connector - 14mm Long

Pack of 2 DC connectors suitable for a wide range of applications including replacing or repairing...

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Full details

This guide is for DIY electronics enthusiasts, repair technicians, and hobbyists looking for reliable DC power connectors. The key benefit is the durable construction and standardized size for easy replacement or integration into projects. A caveat is that these are solder-type connectors, requiring basic soldering skills. This pack of two male DC connectors features a 2.1mm inner diameter and 5.5mm outer diameter tip, a 14mm barrel length, moulded strain relief for durability, and a robust plastic construction suitable for 12VDC at 2A.

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Model Part NumberDOESNOTAPPLY
BrandSwitch Electronics

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FAQs

What is the standard size for DC power connectors?

The most common size, and the one featured here, is 2.1mm inner diameter by 5.5mm outer diameter for the tip.

Can I use this for 24V devices?

No, these connectors are rated for a maximum of 12VDC. Using them with higher voltages can damage the connector and the connected device.

Do these connectors come with a female jack?

No, this is a pack of two male plugs only. You will need a corresponding female jack or a cable with a female end to connect to.

How do I know which wire is positive and negative?

Typically, the center pin of the male connector is positive (+), and the outer barrel is negative (-). Always confirm with the device's specifications or the power adapter's labeling.

What does 'moulded strain relief' mean?

It's a flexible rubber or plastic part integrated into the connector that absorbs stress from bending or pulling the cable, protecting the internal wires and solder connections from damage.

Can I use these for audio or video equipment?

Yes, provided the equipment uses a 2.1mm x 5.5mm DC input and operates within the 12VDC 2A rating.

Troubleshooting

No power after connection

Verify solder joints for both positive and negative connections. Ensure correct polarity is maintained. Check the power source and the device's original requirements.

Intermittent power connection

Re-check solder joints for any cracks or cold joints. Ensure the plug is fully seated in the female jack. Inspect the cable for damage near the connector.

Connector feels loose

The solder joint may be weak, or the female jack might be worn. Re-solder the connection for a more robust bond. If the female jack is the issue, consider replacing it.

Pros and Cons

Pros

  • Provides a secure, permanent connection through solder termination.
  • Standardized dimensions (2.1mm x 5.5mm) ensure broad compatibility.
  • Integrated strain relief enhances durability and prevents cable damage.
  • Suitable for a wide operating temperature range.
  • Cost-effective pack of two for repairs or new projects.

Cons

  • Requires soldering skills for proper installation.
  • Not designed for quick-connect/disconnect applications.
  • Barrel length of 14mm might be too long for some compact devices.

Setup, Compatibility & Care

Setup:

  1. Prepare Wires: Strip a small amount of insulation from the wires of your power cable, exposing the positive and negative conductors.
  2. Solder: Feed the positive and negative wires through the back of the DC connector and solder them to the corresponding terminals. Ensure a clean, strong solder joint.
  3. Strain Relief: Slide the outer housing over the connection, ensuring the moulded strain relief grips the cable jacket securely.

Compatibility:

  • Tip Size: Compatible with 2.1mm x 5.5mm female power jacks.
  • Voltage/Current: Suitable for devices operating at up to 12VDC and drawing no more than 2A.

Care:

  • Keep connectors clean and dry.
  • Avoid excessive force when plugging or unplugging.
  • Periodically inspect solder joints if subjected to vibration.