5.5×2.5mm DC Power Connector – Jacks, Plugs & Panel Mount Solutions
5.5x2.5mm DC power connector components provide a universal interface for low‑voltage DC power delivery. Designed with a 5.5 mm outer diameter and a 2.5 mm inner pin, these connectors are the standard choice for CCTV cameras, LED lighting, networking equipment, and countless 12V‑powered devices. Available in jack, plug, and panel‑mount styles, they ensure safe, polarized connections for your electronic designs.
Product Overview of the DC Power Jack 5.5×2.5mm
The dc power jack 5.5×2.5mm is the most widely used cylindrical DC connector in small electronics. Its 5.5 mm barrel diameter and 2.5 mm centre pin create a mechanically robust, polarized interface that prevents reverse polarity – the outer barrel is typically ground, while the centre pin carries the positive voltage. This standard, maintained by EIAJ and other industry conventions, allows interchangeable use of power adapters across brands and device types.
Our 5.5×2.5mm DC power connector series includes female panel‑mount jacks, inline cable sockets, and right‑angle PCB‑mount receptacles, as well as male cable plugs. Each variant is built with nickel‑plated copper contacts for low contact resistance and a durable thermoplastic housing rated UL94 V‑0. Whether you need a simple solder‑lug jack for a DIY project or a fully sealed, panel‑mount connector for an outdoor enclosure, this product line delivers. For an in‑depth comparison of DC connector standards, refer to the Wikipedia DC connector guide.
When you choose a 5.5mm x 2.5mm dc plug or matching jack, you guarantee that the physical dimensions mate perfectly, avoiding intermittent contacts or loose connections. The 2.5 mm centre pin is specifically sized to differentiate from the more common 2.1 mm pin, preventing accidental connection of incompatible power supplies. This makes the 5.5×2.5 connector ideal for devices that require a dedicated, higher‑current power path.
Engineers appreciate the panel mount dc connector versions for their ease of installation in metal or plastic enclosures. The threaded nose and nut allow secure mechanical fixing, while internal solder cups or screw terminals accommodate various wiring harnesses. This versatility, combined with long mechanical life and rated currents up to 5 A, makes the 5.5×2.5 DC connector a staple in power distribution for both prototyping and mass production.
5.5mm x 2.5mm DC Plug Specifications
| Parameter | Specification |
|---|---|
| Connector Series | 5.5×2.5mm DC Power Connector |
| Part Number | DC-005B |
| Polarity | Centre positive (standard); reverse wiring possible |
| Outer Diameter | 5.5 mm ±0.05 mm |
| Inner Pin Diameter | 2.5 mm ±0.05 mm |
| Rated Voltage | DC 24 V max |
| Rated Current | 5 A (at 12 V DC, depending on contact design) |
| Contact Resistance | ≤ 30 mΩ initial |
| Insulation Resistance | ≥ 100 MΩ at 500 V DC |
| Dielectric Withstanding Voltage | 500 V AC for 1 minute |
| Contact Material | Copper alloy, nickel‑plated |
| Housing Material | PBT / Nylon 66, UL94 V‑0 |
| Mounting Styles | Panel mount (with nut), PCB through‑hole, cable‑end |
| Termination | Solder lugs, screw terminals, or flying leads |
| Mating Cycles | ≥ 5,000 |
| Operating Temperature | -20 °C to +70 °C |
| RoHS Compliance | Yes |
Key Features of Our Panel Mount DC Connector
Universal 5.5×2.5mm Compatibility
Mates securely with any standard 5.5 mm barrel plug having a 2.5 mm centre hole. Eliminates the guesswork in power supply matching and works seamlessly with CCTV power boxes, LED drivers, and generic 12V adapters.
5A High‑Current Capability
Robust nickel‑plated contacts and generous solder terminals support continuous loads up to 5 A, making the connector suitable for high‑power LED arrays, motor drivers, and industrial sensors without overheating.
Secure Panel‑Mount Installation
The threaded body and included hex nut lock firmly into enclosure cutouts. Vibration‑resistant design ensures long‑term reliability in mobile, outdoor, or industrial environments where loose connectors could cause failures.
Flexible Termination Options
Choose between solder‑cup contacts for hardwired harnesses, screw terminals for tool‑free field wiring, or pre‑attached flying leads for quick prototyping. The same panel‑cutout accommodates all termination styles.
Protected Polarized Interface
The centre‑positive convention is physically enforced by the 2.5 mm pin diameter. When paired with a matching 5.5×2.5mm plug, it prevents accidental reversal that could damage sensitive electronics.
Rugged, Weather‑Resistant Build
Available with IP67‑rated boots and sealed housings for outdoor use. The UL94 V‑0 thermoplastic resists impact and flame, meeting safety requirements for consumer electronics and industrial gear.
Applications of DC Power Socket 5.5 2.5
5.5×2.5mm DC Power Connector – Frequently Asked Questions
How do I identify a 5.5×2.5mm DC plug vs a 5.5×2.1mm plug?
What is the typical polarity of this connector?
Can this connector handle 12V at 5 amps continuously?
Is a panel‑mount DC connector waterproof?
How do I wire a 5.5×2.5mm panel‑mount socket?
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