The TC42X-2-501E is a 2 mm SMD Trimpot trimming potentiometer manufactured by Bourns, designed for precision resistance adjustment in compact surface-mount applications. This single-turn cermet/open-frame device features a 500 ohm resistance value with ±25% tolerance and meets EIA/EIAJ standard trimmer footprint specifications. The potentiometer offers an adjustment angle of 240° ±20°, essentially infinite resolution, and operates across a temperature range of -40°C to +100°C with a temperature coefficient of ±250 ppm/°C. It is rated for 0.1 watt at 70°C with a maximum voltage of 50 VDC, and features a torque specification of 0.49 to 7.84 mN-m. The TC42X-2-501E is ideal for applications requiring fine-tuning of circuit parameters in consumer electronics, instrumentation, and industrial equipment, offering reliable performance with RoHS compliance and essentially infinite resolution for precise calibration.