5.5x2.1mm Female DC Power Jack, Chassis Mount, Waterproof Cap
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Prices updated: 14 Oct 2026
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About this product
A 5.5 x 2.1 mm center-positive DC power jack with solder terminals and a plastic body, designed for chassis mounting. The included waterproof cap helps keep dust, water and humidity out of the connector, extending its service life. It suits power inputs on enclosures, Arduino-style boards and DIY projects.
Specifications
- Connector size
- 5.5 x 2.1 mm
- Polarity
- Center-positive
- Mounting
- Chassis mount
- Termination
- Solder terminals
- Body
- Plastic with waterproof cap
Frequently asked questions
Will it fit the power input of an Arduino Uno?
The 5.5 x 2.1 mm size matches the common barrel plug used on Arduino Uno-style boards. Confirm the center-positive polarity against your board before wiring it.
What is the waterproof cap for?
The cap covers the jack and helps prevent dust, water and humidity from entering the connector, which protects it and extends its useful life.
