PTD901-2015K-B503 is a 9 mm single-section multi-ganged potentiometer from Bourns' PRO AUDIO series, featuring a knurled metal shaft with 20 mm length and linear taper characteristic. The potentiometer has a resistance value of 20 kO with ±20% tolerance and operates at a maximum voltage of 150 VAC or 20 VDC, with rated power of 0.05 watts for linear taper. It incorporates a carbon element with tracking error within ±3 dB and offers excellent mechanical durability with 15,000 rotational cycles and an IP40 rating. The device operates reliably over a temperature range of -10°C to +50°C and features RoHS compliance. This potentiometer is ideal for audio/TV sets, automotive sound systems, amplifiers, mixers, and multimedia sound applications where precise volume control and reliable performance are essential.