The DC-022 (DC2) Female DC Power Plastic Connector is an industry-standard, high-isolation barrel jack receptacle engineered specifically for mounting onto plastic project boxes, custom enclosures, and electronic equipment chassis. Featuring the standard 2.1mm center pin within a 5.5mm outer sleeve socket, this component allows your hardware devices to accept direct low-voltage power from ubiquitous commercial AC/DC wall adapters and benchtop power supplies.
The DC-022 model features a compact, space-saving circular profile molded from a high-impact, electrically insulative engineering polymer body that completely eliminates the risk of accidental chassis grounding or short-circuits against panel walls. Designed for clean, front-loading box installation, it secures tightly via an included rear hex locking nut and rubber washer, ensuring a stable, wobble-free interface that withstands repeated plug insertion and extraction cycles.
Universal 2.1mm x 5.5mm Footprint: Precision-machined to form a tight, snap-fit physical connection with standard 2.1mm male barrel plugs, entirely preventing intermittent power drops from cable tugs.
Compact DC-022 Form Factor: Designed with a minimized structural footprint, making it the perfect choice for crowded enclosure panels and ultra-slim plastic project boxes.
High-Isolation Plastic Housing: Molded from premium, non-conductive engineering plastic (Model: DC2) that provides absolute electrical isolation, making it ideal for non-grounded plastic enclosures.
Integrated Internal Shunt Switch: Features a clever three-pin contact layout that automatically disconnects an internal battery circuit when a male DC wall plug is inserted, switching the system seamlessly to external power.
Secure Box-Threaded Mounting: Equipped with a dedicated backing rubber washer and heavy hex nut that locks the socket firmly into pre-drilled box holes, preventing rotation during use.
| Parameter | Specification |
| Component Type | Plastic Panel / Box Mount Female DC Barrel Jack |
| Model Number / SN | DC-022 / DC2 |
| Pin Dimensions | 2.1mm Center Pin Inside Diameter (ID) x 5.5mm Outside Diameter (OD) |
| Pin Configuration (Poles) | 3 Pins (Center Pin, Outer Sleeve, and Internal Shunt/Switch Pin) |
| Mounting Cutout Diameter | Standard 11.5mm to 12.0mm Box Hole |
| Termination Style | Rear Metal Solder Lugs / Tabs |
| Material (Body Housing) | High-Impact, Flame-Retardant Insulative Polymer |
| Material (Contacts & Pin) | High-Conductivity Brass Alloy, Nickel/Silver-Plated |
| Rated Operating Voltage | 12V to 30V DC Max |
| Rated Current Load | 3A Continuous Max |
| Contact Resistance | $\le 0.03\,\Omega$ ($30\,ext{m}\Omega$) |
| Insulation Resistance | $\ge 100\,ext{M}\Omega$ at 500V DC |
The ideal, space-saving power entry interface for small plastic enclosures, custom instruments, and prototyping boxes:
Plastic Project Box Power Inputs: Serving as the primary power entry node on 3D-printed cases, ABS junction boxes, and hand-held device housings to pipe in 5V, 12V, or 24V DC paths cleanly.
Automatic Battery-to-Mains Switching: Utilizing the internal shunt pin to build automatic power-selection circuits that bypass internal AA or Li-ion battery packs the moment an external wall adapter is plugged in.
Smart Home & IoT Sensor Boxes: Providing an easily disconnectable, low-profile power input node for localized ESP32/Arduino smart nodes, relay modules, and environmental telemetry cases.
DIY Bench Equipment Prototyping: Ideal for building or modifying small desktop hardware tools, logic trainer kits, and dedicated battery-charging bays housed in plastic enclosures.
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