Integrate reliable power directly into your hardware with our 5.5mm x 2.1mm PCB-Mount DC Jack. This right-angle power socket is the industry standard for through-hole mounting on printed circuit boards. Whether you are repairing a broken charging port on a consumer device or designing a custom PCB for a new product, this jack provides a secure, low-profile power entry point that handles standard 12V/24V adapters with ease.
Microcontroller Boards: The standard power input for Arduino Uno, Mega, and various development kits.
Network Equipment Repair: Replace damaged power ports on routers, modems, and network switches.
Custom PCB Projects: Ideal for hobbyist electronics, custom sensor hubs, and IoT devices.
Consumer Electronics: Perfect for small appliances, digital clocks, and audio-visual equipment.
Standard 2.1mm Center Pin: Compatible with the world's most common 5.5 x 2.1mm barrel-style power adapters.
3-Pin PCB Layout: Includes two power terminals and a third "shunt" pin. The shunt allows for automatic switching between battery and external DC power.
Reinforced Solder Tabs: Features thick, flat pins that provide superior mechanical strength once soldered, preventing the jack from lifting off the board.
High-Temperature PBT Housing: Engineered to withstand the heat of wave soldering and manual soldering without melting or pin misalignment.
Low Contact Resistance: High-quality copper alloy contacts ensure stable voltage delivery and minimal heat buildup during high-current use.
Connector Size: 5.5mm (Outer) x 2.1mm (Inner Pin)
Why are there 3 pins when my power adapter only has 2?
The third pin is a switch. When no plug is inserted, it connects to the negative pin (usually for a battery backup). When you plug in an adapter, it disconnects the battery to prevent charging or back-feeding issues.
Will this fit a 2.5mm plug?
No. A 2.5mm plug has a larger hole and will not make contact with the 2.1mm pin inside this jack, causing intermittent or no power.
Is it compatible with breadboards?
Not directly. PCB-mount jacks have flat pins that are too wide for standard breadboard holes. You would need a "DC Jack Breakout Board" or to solder wires to the pins first.
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