3.50 mm TRS phone jack, through-hole right-angle
The SJ1-3523N is a 3-conductor (TRS) phone jack from CUI Devices' SJ1 series, accepting a standard 3.50 mm mini plug. Rated 1 A at 12 VDC, the unshielded jack mounts through-hole right-angle with solder termination. The brass body and PBT housing carry tin-plated contacts; no internal switch is present.
