This 5.5 x 2.1mm DC Socket is a high-quality female power connector designed for direct PCB (Printed Circuit Board) mounting or enclosure integration. Featuring a standardized 2.1mm center pin, it provides a robust and reliable docking point for common AC-DC power adapters, ensuring consistent energy delivery for a wide range of electronic devices.
Standardized 2.1mm x 5.5mm Interface: Fully compatible with the most widely used DC barrel plugs found on universal power adapters and battery holders.
High-Stability Solder Terminals: Features three durable metal terminals designed for secure soldering, providing excellent mechanical strength and electrical conductivity.
Right-Angle PCB Design: The horizontal orientation is ideal for low-profile electronic designs, allowing for easy side-entry power access in compact housings.
Impact-Resistant Polymer Housing: Encased in a rugged, heat-resistant black plastic shell that withstands the high temperatures of soldering and frequent plugging cycles.
Secure Internal Spring Contacts: Engineered with high-tension internal clips to maintain a tight grip on inserted plugs, preventing intermittent power loss or accidental disconnection.
Internal Pin Diameter: 2.1mm.
Outer Socket Diameter: 5.5mm.
Mounting Type: PCB Mount / Right-Angle.
Number of Terminals: 3 Solder Lugs.
Material: Nickel-Plated Metal Contacts with ABS/PBT Housing.
Consumer Electronics: The standard power input for wireless routers, modems, and external hard drive enclosures.
DIY Microcontroller Projects: Ideal for providing stable external power to Arduino, ESP32, or Raspberry Pi project boards.
LED Lighting Systems: Commonly used as a power entry point for LED strip controllers and under-cabinet lighting kits.
Medical & Industrial Gear: Serves as a reliable low-voltage interface for portable diagnostic equipment and control modules.
Why are there three terminals for a two-wire DC connection? The third terminal often acts as a switched ground. This allows the device to automatically detect when a power adapter is plugged in, often used to disconnect an internal battery to save energy.
Will this work with my 2.5mm power adapter? While a 2.5mm plug might physically enter the opening, the center pin will not make contact with the 2.1mm socket pin, resulting in no power. Always ensure your plug and socket sizes are matched.
Is it difficult to solder onto a board? The terminals are sized for standard through-hole PCB mounting. With a basic soldering iron and proper flux, it creates a very strong mechanical bond suitable for industrial use.
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