PDB181-K420K-104A2 is a 17 mm rotary potentiometer from the PDB18 Series designed for professional audio and consumer electronics applications. This single-section potentiometer features a metal knurled shaft with 18-tooth serration, vertical down-facing PC pins (12.5 mm spacing), and a linear audio taper characteristic. The device operates with a maximum voltage of 150 V for audio applications and a power rating of 0.1 watt, with a mechanical angle of 300° ± 5° and rotational torque ranging from 10 to 150 gf-cm. It is RoHS compliant and rated for 15,000 rotational cycles, making it suitable for audio/TV sets, car radios, amplifiers, mixers, synthesizers, and other consumer audio equipment requiring reliable volume or tone control.