Bourns 6639S-1-203 Rotary Trimmer Potentiometer is a compact, panel-mount, single-turn device with a 20 kΩ resistance and a linear taper, designed for precision calibration in electronic assemblies. It uses a conductive plastic resistive element and supports a 1 W power rating, with a 6.35 mm (1/4 in) shaft and solder turret terminals for easy panel installation. As part of the 6639S family, this 1-turn, 20 kΩ variant is listed by Bourns and major distributors as a 1-gang, linear potentiometer suitable for trimming in instrumentation, consumer electronics, and lab gear.
