Power / Connectors & Adapters / DC

If you need to connect a DC power wall wart to a board that doesn't have a DC jack - this adapter will come in very handy! There is a 2.1mm DC jack on one end, and a screw terminal block on the other. The terminals are labeled with positive/negative assuming a positive-tip configuration (which is the most common)

Quadruple your power adapters with this wonderfully simple 4-way power jack splitter. All you have to do is connect a standard 5.5mm/2.1mm sized plug into one end, and behold, four identical plugs to use! We like the rugged molding on these adapters, and they're really handy when you have a project with multiple pluggable devices. 4-Way 2.1mm DC Barrel Jack Splitter...

If you need to connect a battery pack or wired power supply to a board that has a DC jack - this adapter will come in very handy! There is a 2.1mm DC plug on one end, and a screw terminal block on the other. The terminals are labeled with positive/negative assuming a positive-tip configuration (which is the most common)

This power jack is designed to fit 2.1mm power plugs snugly and securely. Perfect for adding a power connector to your project. We went for the more expensive "thin pin" type which snap into breadboards or perfboards. They will work where "thick pin" types go also, just need a little more solder to fill up the larger pads. The pin at the end of the jack is the...

This power jack is designed to easily attach to a panel up to 8mm thick (0.315" or 5/16") and fit 2.1mm power plugs snugly and securely. Perfect for adding a power connector to your project enclosure. We like this jack in particular for its long body (so you can use it on thicker wooden panels), sturdy PCB spacer with 3 easy-to-solder eyes and 'forgiving' plastic lip...

Turn a wall adapter into a mini power supply with this incredibly useful adapter. A high quality molded 2.1mm DC barrel jack is brought out to red (center positive) & black (ring negative) alligator clips. Works with just about every wall adapter, good for about 2 or 3 Amps of current and up to 24VDC. 2.1mm DC Barrel Jack to Alligator Clips (1:28)

If you need to add a panel-mount connection for DC power, but don't have the time or ability to cut a custom oval or square hole, this Round Panel Mount 5.5mm/2.1mm DC Barrel Jack Extension Cable is the easiest and fastest way to panel-ify your existing project. The outer flange is 30mm in diameter, and the threaded part is 23mm diameter, so you can drill a 1" hole...

This product is a 3-in-1 cable. By itself, it can act as an extension cord for any 5.5/2.1mm DC power cable. The heavy 24 AWG wires can handle up to 5A. You can also cut it half to make two barrel cables (one plug and one jack). This will allow you to connect a classic 'wall wart' to a breadboard or PCB without having to solder in a bulky power jack. Or you can use...

"Hrmph! All I have is a power supply with a 2.1mm plug and my doodly-whatsit has a 2.5mm jack. I keep trying to force the plug to fit but that 0.4mm difference just wont work....what am I going to do!?" ENTER The Adapter. This 2.1mm to 2.5mm adapter is the best way to adapt a 2.1mm plug so that it will fit into a 2.5mm jack. Remember that this will fit into a device...

This convenient 3.8mm/1.3mm or 3.5mm/1.1mm or 1.3mm DC to 2.1mm DC adapter cable lets you plug one of our solar panels into our optimized Solar Lithium Ion/Polymer charger! 2.1mm inner diameter (5.5mm outer diameter) is the most common type of DC plug, but you can use this adapter for anything else that has a 1.1 or 1.3mm ID (3.5-3.8mm OD) DC jack! The adapter has...

This convenient adapter lets you plug a USB Type C 3.1 5V cable into something with a 5.5mm / 2.1mm DC barrel socket. Works great with any device or cable with 5.5mm / 2.1mm DC barrel socket. Since USB C is reversible you can flip it for a left angle or right angle. You'll get 12V DC output, at up to 3A (or whatever the power adapter can do) Please note: If your USB...

This convenient adapter lets you plug a USB Type C 3.1 5V cable into something with a 5.5mm / 2.1mm DC barrel socket. Works great with any device or cable with 5.5mm / 2.1mm DC barrel socket. Since USB C is reversible you can flip it for a left angle or right angle. You'll get 5V DC output, at up to 3A (or whatever the power adapter can do) Please note: This adapter...

We're carrying this adapter primarily to allow Chumby Hacker Board users to adapt our nice 5V @ 2A power supply to their CHB. But you can use this adapter for anything else that has a 1.7mm DC jack, such as a PSP.

Outdoor enthusiasts rejoice! We now have standard 5.5/2.1mm DC power cable sets in a waterproof variety. These cable sets are ideal for projects that must weather the weather: dust, water, rain, snow, tornado (not volcano proof!). They are a little bulkier than normal DC jacks because of the o-ring and removable over-screw. The o-ring is what makes the waterproof...

This convenient adapter lets you plug a USB Type C 3.1 5V cable into something with a 5.5mm / 2.1mm DC barrel socket. Works great with any device or cable with 5.5mm / 2.1mm DC barrel socket. Since USB C is reversible you can flip it for a left angle or right angle. You'll get 20V DC output, at up to 3A (or whatever the power adapter can do) Please Note: The adapter...

We have a lot of power adapter packs in the shop - from 9V to 12V to 5V we even have an adjustable power supply like one of these. But all of them will come with the same standard 5.5mm / 2.1mm DC barrel jack that is most common on many devices. What if you'd like to power something different, say some old synthesizer or a laptop or some other whats-it? Basically,...

The premise of this MicroUSB Plug to 5.5/2.1mm Jack adapter is simple. There's a MicroUSB plug on one end and a 5.5mm/2.1mm DC barrel jack with center positive polarity on the other. This allows you to connect one of our 5V 2 Amp, 5V 4A or 5V 10 Amp adapters to something that expects to connect to 5V USB. We also have a shorty adapter-without-cable version Since this...

Once in a while, we find products with center negative DC power jacks, and they really make us mad because who keeps around both positive and negative polarity versions of every voltage? Now, hopefully, USB Power Delivery will solve this long term, but until then, this 2.1mm DC polarity reversal adapter will have to do! Usage is simple: plug into any 2.1mm or 2.5mm /...

This convenient adapter lets you plug a USB Type C 3.1 5V cable into something with a 5.5mm / 2.1mm DC barrel socket. Works great with any device or cable with 5.5mm / 2.1mm DC barrel socket. Since USB C is reversible you can flip it for a left angle or right angle. You'll get 9V DC output, at up to 3A (or whatever the power adapter can do) Please note: If your USB...

This convenient 3.5mm/1.1mm or 5.5mm/2.1mm DC Jack adapter lets you plug one of our solar panels into our optimized Solar Lithium Ion/Polymer charger! 2.1mm inner diameter (5.5mm outer diameter) is the most common type of DC plug, but you can use this adapter for anything else that has a 1.1mm ID (3.5 OD) DC jack. This adapter lets you convert something with a 3.5mm...

As technology changes and adapts, so does Adafruit, and speaking of adapting, this adapter has a 2.1mm barrel jack socket and a USB C plug - you could use this to power a USB C device from a common wall adapter. USB C is the latest industry-standard connector for transmitting data and power. Like Lightning and MagSafe cables, USB C has no up or down orientation. Plug...

The premise of this MicroUSB to 5.5/2.1mm DC Barrel Jack Adapter is simple. There's a MicroUSB plug on one end and a 5.5mm/2.1mm DC barrel jack with center positive polarity on the other. This allows you to connect one of our 5V 2 Amp, 5V 4A or 5V 10 Amp adapters to something that expects to connect to 5V USB. We also have a cable-version of this, but this one is...

If you've ever owned a 1st generation MacBook, you'll recognize this little friend. The premise of this 2.1mm DC Barrel Jack to 1st Generation MagSafe Adapter is simple. There's a MagSafe plug on one end and a 5.5mm/2.1mm DC barrel jack with center positive polarity on the other. This allows you to connect a 15-20VDC power supply to something that expects to connect...

Double up your power adapters with this wonderfully simple 2-way power jack splitter. All you have to do is connect a standard 5.5mm/2.1mm sized plug into one end, and behold, two identical plugs to use! We like the rugged molding on these adapters, and they're really handy when you have a project with multiple pluggable devices. 2-Way 2.1mm DC Barrel Jack Splitter...

Turn any battery pack into a power supply with this incredibly useful adapter. A high quality molded 2.1mm DC barrel plug is brought out to red (center positive) & black (ring negative) alligator clips. 2.1mm is a near-standard for electronics, so with this adapter you can easy clip and connect packs and wires to a power jack. Good for about 2 or 3 Amps of...

If you own a MacBook, you'll recognize this little friend. The premise of this 2.1mm DC Barrel Jack to 2nd Generation MagSafe Adapter is simple. There's a MagSafe plug on one end and a 5.5mm/2.1mm DC barrel jack with center positive polarity on the other. This allows you to connect a 15-20VDC power supply to something that expects to connect to 2nd gen. MagSafe....