Pimoroni
5V 3A barrel jack power supply
$21.15
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Out of stock
This 5V 3A barrel jack power supply delivers up to 18W of regulated DC power, making it a solid choice for projects that need more current than a standard US...
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This 5V 3A barrel jack power supply delivers up to 18W of regulated DC power, making it a solid choice for projects that need more current than a standard USB supply can provide. It ships with interchangeable adapter plates for Australia, UK, Europe, and the USA.
Key Features
- Output – 5V DC at up to 3A (18W)
- Connector – 5.5mm OD / 2.5mm ID centre-positive DC barrel jack
- International Adapters – Australian, UK, European, and US plug plates included
Ideal For
- Media players and single-board computers with barrel jack input
- LED strips and lighting projects
- Any 5V device requiring up to 3A via barrel jack
Package Contents
- 1× 5V 3A Power Supply (5.5×2.5mm barrel jack)
- 4× Interchangeable plug adapters (AU, UK, EU, US)
Note: This supply uses a 5.5×2.5mm barrel jack. Check your device's DC input size before purchasing — many boards use a 5.5×2.1mm jack instead.
Jargon buster
Plain-language definitions for the technical terms used above.
- DC
- DC means direct current, where electricity flows in one constant direction, as supplied by batteries, USB ports and many plug-pack power supplies. When a product specifies DC, it runs from a DC supply rather than mains AC, so you need to provide the correct voltage and polarity.
- DC barrel jack
- A round power connector commonly used for low-voltage DC power supplies, often described by its outer and inner diameters such as 5.5 x 2.1 mm. Matching the barrel size and polarity is important so the plug physically fits and powers the device correctly.
- LED
- A light-emitting diode (LED) is a small electronic component that emits light when current flows through it in the correct direction. Because it only conducts one way, its polarity matters, and a through-hole LED must be soldered the correct way around to light up.
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