Description
2.1mm x 5.5mm Female DC Power Jack Breakout Module (PCB Mount)
Product Overview
The 2.1mm Female DC Power Jack Breakout Module is an indispensable, prototyping-ready power interface designed to transition standard low-voltage DC barrel connectors into a breadboard-friendly 2.54mm (0.1 inch) pin pitch layout. Featuring the industry-standard 2.1mm center pin within a 5.5mm outer diameter socket, this module allows developers to instantly pipe power from ubiquitous commercial AC/DC wall adapters directly into custom circuits without the need for manual wire stripping, messy splicing, or delicate surface-mount soldering.
Pre-soldered onto a rigid, high-quality printed circuit board (PCB) with clearly labeled terminal pins, this breakout ensures an ultra-low resistance connection capable of handling steady current loads. It is the perfect rapid-deployment solution for powering embedded microcontroller frameworks, custom logic boards, automated sensor nodes, and DIY electronic test rigs requiring a reliable, easily disconnectable main power feed.
Key Features
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Breadboard-Ready Pin Layout: Breaks out the DC power lines to a standard 2.54mm (0.1 inch) header pitch, allowing seamless drop-in integration onto standard solderless breadboards, perfboards, and prototyping grids.
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Universal 2.1mm x 5.5mm Socket: Engineered to establish a firm, snap-fit physical connection with matching 2.1mm male barrel plugs, entirely preventing accidental power dropouts from mechanical vibration or cable tugs.
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Pre-Assembled PCB Design: Eliminates the frustration of hand-soldering tiny, high-thermal-mass connector pins; the jack is permanently flow-soldered to a rigid FR-4 fiberglass backing board.
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Clearly Marked Power Terminals: Features distinct, high-contrast silkscreen labeling for VCC (Positive) and GND (Negative/Ground) routing to ensure safe, error-free wiring during rapid prototyping.
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Integrated Secondary Breakouts: The board layout often includes multi-point pin pads, making it easy to solder multiple output wire trunks or bypass capacitors directly to the incoming power rail.
Technical Specifications
| Parameter | Specification |
| Component Type | DC Power Jack Breakout Module (PCB Mounted) |
| Barrel Socket Size | 2.1mm Center Pin (ID) x 5.5mm Outer Diameter (OD) |
| Output Pin Pitch | Standard 2.54mm (0.1 inch) Header Spacing |
| Pin Configuration | VCC (Positive / Center Pin) and GND (Negative / Outer Sleeve) |
| PCB Material | High-Quality FR-4 Fiberglass with Soldermask |
| Connector Material | Heat-Resistant Thermoplastic with Silver-Plated Contacts |
| Rated Max Voltage | 12V to 36V DC Max |
| Rated Max Current | 3A to 5A Continuous Max (Depending on exact layout thickness) |
| Contact Resistance | $\le 0.03\,\Omega$ ($30\,\text{m}\Omega$) |
| Insulation Resistance | $\ge 100\,\text{M}\Omega$ at 500V DC |
Applications
The universal standard power gateway for solderless prototyping, embedded hardware, and custom control circuitry:
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Solderless Breadboard Prototyping: Serving as the central power node to drop commercial 5V, 9V, or 12V wall brick power directly onto standard 2.54mm breadboard power distribution rails.
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Microcontroller & Development Board Supply: Providing a clean, stable DC voltage input for custom Arduino standalone boards, ESP32 boards, Raspberry Pi Pico nodes, and high-load relay systems.
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Custom Test Bench Rigs: Acting as an easily swappable, modular power feed for hardware validation jigs, logic analyzer frames, and temporary diagnostic circuits.
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Enclosed Hardware Power Input: Perfect for routing power efficiently into space-constrained DIY cases, 3D printed housings, and standalone equipment frames without drilling large panel-mount paths.
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