The 3540S-1-201L is a precision potentiometer manufactured by Bourns, featuring a 200 ohm resistance value with a resolution of 0.042 ohms and a total resistance tolerance of ±5%. This bushing-mount potentiometer delivers high torque performance with a mechanical angle of 3600° +10°, -0° and offers excellent linearity of ±0.25%. The device operates reliably across a wide temperature range from -40°C to +125°C, with a dielectric withstanding voltage of 1,000 VAC minimum and a power rating of 2 watts at +70°C. Its robust construction includes gold-plated solder lugs, a weight of approximately 21 grams, and optional features such as center tap, rear shaft extension, and anti-rotation lug capability. The 3540S-1-201L is ideal for precision instrumentation, control systems, and applications requiring stable, accurate resistance adjustment with high mechanical durability.