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Pack of thirty small DC female barrel connectors with alloy contacts and black PVC bodies

eForChina

eForChina 30 PCS DC Female Head 5.5×2.1mm Power Adapter

SKU CH-8PGQ-03Q5K

Pack of 30 DC female power connectors with 5.5×2.1mm and 5.5×2.5mm interfaces, rated 12V 3A for low-frequency power supply use

  • Changer TypePower Adapter
  • 30-piece pack simplifies bulk wiring jobs
  • Alloy contacts maintain reliable conductivity under load
  • PVC insulator resists heat and wear
  • Dual 5.5×2.1 mm and 5.5×2.5 mm fit common DC jacks
  • 12 V 3 A rating covers typical low-power supplies

30-Pack DC Female Power Connectors

This pack contains thirty assembled DC female heads designed for low-frequency power supply applications. Each connector uses alloy contact parts and a PVC insulator for reliable conductivity. The components suit hobbyists, repair technicians and small-scale builders who need a ready-to-solder bulk supply. They are not intended for high-frequency signal or data transmission tasks.

Simple Solder Installation

Each unit arrives pre-assembled so you only need to solder your cable wires to the positive and negative poles. The 5.5 mm barrel accepts both 2.1 mm and 2.5 mm centre pins, reducing mismatch risk. A common error is applying excessive heat, which can deform the PVC insulator. Work quickly with a temperature-controlled iron to avoid damaging the housing.

Verify Polarity and Ratings Before Use

Confirm your power source delivers no more than 12 V and 3 A to stay within the connector ratings. Check that the existing equipment uses a centre-positive wiring scheme matching the positive and negative poles marked on the housing. Ensure the cable gauge you plan to solder can handle the intended current without overheating.

Highlights

  • 30-piece pack simplifies bulk wiring jobs
  • Alloy contacts maintain reliable conductivity under load
  • PVC insulator resists heat and wear
  • Dual 5.5×2.1 mm and 5.5×2.5 mm fit common DC jacks
  • 12 V 3 A rating covers typical low-power supplies

Specifications

Changer TypePower Adapter

Questions about this item

How can I confirm the DC 5.5×2.1 mm female connector is delivering 12 V and 3 A after soldering the wires?

Use a multimeter on the assembled terminals to verify 12 V output and check that current draw stays within the 3 A rating under load.

What comes in the 30-piece pack and do I need to supply my own wire?

The pack contains 30 pre-assembled DC female heads with alloy contacts and PVC insulators; you must provide and solder your own power cable.

Should I choose the 5.5×2.1 mm or 5.5×2.5 mm interface for a standard 12 V 3 A power supply?

Select the 5.5×2.1 mm version, which matches the common centre-pin size for 12 V 3 A supplies; the 2.5 mm variant suits different equipment.

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