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. Technical details Downloads: Datasheet https://elecena.pl/product/22713221/breadboard-friendly-2-1mm-dc-barrel-jack 2023-03-06 https://elecena.pl/product/22713221/breadboard-friendly-2-1mm-dc-barrel-jack 2023-12-27 https://elecena.pl/product/22713221/breadboard-friendly-2-1mm-dc-barrel-jack 2024-09-19 https://elecena.pl/product/22713221/breadboard-friendly-2-1mm-dc-barrel-jack 2024-11-29 https://elecena.pl/product/22713221/breadboard-friendly-2-1mm-dc-barrel-jack 2024-11-30 https://elecena.pl/product/22713221/breadboard-friendly-2-1mm-dc-barrel-jack 2025-11-28 https://elecena.pl/product/22713221/breadboard-friendly-2-1mm-dc-barrel-jack 2025-11-29