Bourns 3400S-1-203 Rotary Wirewound Potentiometer

The Bourns 3400S-1-203 rotary wirewound potentiometer is a precision, panel-mount device designed for high-stability adjustments in instrumentation and calibration tasks. It provides 20 kΩ resistance with a tight ±3% tolerance at a 5W power rating, and it is a 10-turn, 1‑gang, linear-taper potentiometer, enabling fine control across multiple revolutions while delivering repeatable readings. The unit features solder-lug terminations and a 6.34 mm shaft diameter, with a compact body around 20.64 mm long to fit standard panel cutouts and mounting footprints. It is rated for operation up to 125°C, making it suitable for demanding environments where thermal conditions vary and longevity matters. Typical applications include calibration panels, lab instrumentation, bench-test rigs, and precision control in audio or measurement gear where stable, accurate adjustment over many turns is required.