The 6639S-1-203 is a precision potentiometer manufactured by Bourns, featuring a 20 kO resistance value with ±15% tolerance and bushing mount configuration. It delivers essentially infinite resolution with excellent rotational life of 10,000,000 shaft revolutions and independent linearity of ±2.0%. The device operates over a temperature range of +1°C to +125°C with a low backlash of 0.1° maximum and low starting/running torque of 0.40 N-cm. Its high-quality rugged construction, combined with rear turret terminals and RoHS compliance, makes it ideal for general-purpose applications requiring cost and space-saving solutions in instrumentation, control systems, and precision measurement equipment.