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Thirty black barrel connectors with silver tips in a row

eForChina

eForChina 30 PCS DC Female Head 5.5x2.5mm gender changer

SKU CH-G7WQ-DJHR2

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

  • Changer TypePower Adapter
  • 30-piece pack covers multiple devices
  • Alloy contacts maintain reliable conductivity
  • PVC insulation protects against short circuits
  • 5 × 2.5 mm and 5.5 × 2.1 mm fit common power jacks
  • Rated 12 V / 3 A for standard DC supplies

30-Pack DC Female Gender Changers

This pack contains thirty assembled DC female-head adapters with a 5.5×2.5 mm interface that also accepts 5.5×2.1 mm plugs. They are rated for 12 V and 3 A, making them suitable for low-frequency power-supply connections. The contact parts use alloy conductors and the insulator is PVC. Buyers who need a different barrel size, higher current rating or data-transfer capability will not be served by this item.

Replaces Damaged or Missing Barrel Connectors

Use these gender changers to repair cables with worn DC jacks or to convert an existing male plug into a female socket without soldering. The upgrade is worthwhile when the original connector fails or when a device requires a female input but only a male lead is available. They are not intended for high-frequency signals, audio lines or any application above the stated voltage and current limits.

Simple Push-Fit Installation

Each unit is pre-assembled so installation only requires pushing the male plug into the female socket until it seats firmly. The most common issue is a loose fit when the mating plug is undersized or out of specification, which can cause intermittent power. Verify that the plug dimensions match 5.5×2.5 mm or 5.5×2.1 mm before relying on the connection for continuous operation.

Highlights

  • 30-piece pack covers multiple devices
  • Alloy contacts maintain reliable conductivity
  • PVC insulation protects against short circuits
  • 5 × 2.5 mm and 5.5 × 2.1 mm fit common power jacks
  • Rated 12 V / 3 A for standard DC supplies

Specifications

Changer TypePower Adapter

Questions about this item

What is the barrel diameter and pin size of the DC female connector on this adapter?

The connector uses a 5.5 mm outer diameter with a 2.5 mm centre pin, and it also accepts a 2.1 mm pin

How do I attach a wire to the solder terminals, and what mistake should I avoid?

Strip the wire, tin the strands, then solder to the alloy contacts; avoid overheating the PVC insulator so it does not melt

When should I replace one of these gender changers in a 12 V, 3 A power supply setup?

Replace it if the alloy contacts become corroded, the PVC body cracks, or the connection feels loose during use

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