Adafruit
3.5 / 1.3mm or 3.8 / 1.1mm to 5.5 / 2.1mm DC Jack Adapter Cable
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A DC barrel jack adapter cable that converts a 3.5/1.3 mm or 3.8/1.1 mm DC plug to the standard 5.5/2.1 mm DC barrel jack format. Internal spring contacts ac...
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A DC barrel jack adapter cable that converts a 3.5/1.3 mm or 3.8/1.1 mm DC plug to the standard 5.5/2.1 mm DC barrel jack format. Internal spring contacts accommodate outer diameters from 3.5 mm to 3.8 mm, making it versatile across a range of small-barrel DC connectors.
Key Features
- Wide Compatibility – Fits 3.5–3.8 mm OD / 1.1–1.3 mm ID DC plugs via spring contacts
- Standard Output – Converts to 5.5/2.1 mm DC barrel jack (the most common DC connector size)
- Simple Adapter – Inline cable design, no soldering required
Ideal For
- Connecting small-barrel DC devices to standard 5.5/2.1 mm power supplies
- Adapting solar panels with small DC plugs to charger boards
- Any project requiring DC barrel jack size conversion
Package Contents
- 1× DC Jack Adapter Cable (3.5/1.3 mm to 5.5/2.1 mm)
Jargon buster
Plain-language definitions for the technical terms used above.
- 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.
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