資料來源:https://www.sparkfun.com/products/119
DC power jack/connector. This is a common barrel-type power jack for DC wall supplies. These are compatible with our DC wall supplies and have a 5.5mm jack, with a 2.1mm center pole diameter.
Datasheets:
直流電源插孔/連接器。這是DC牆上電源常見的炮筒式電源插孔。這些都是我們的直流壁用品相容並具有5.5mm的插孔,具有2.1毫米中心極的直徑。
數據表: