3386R-1-503 is a 3/8" square single-turn cermet trimming potentiometer designed for industrial applications requiring precise resistance adjustment. It features a 50 kO resistance value (code 503), ±10% resistance tolerance, and an adjustment angle of 280° nominal with infinite resolution. The potentiometer offers a power rating of 0.5 watt at 85°C, operates over a temperature range of -55°C to +125°C, and provides a temperature coefficient of ±100 ppm/°C. With sealed construction, UL 94V-0 flammability rating, and solderable pin terminals, this trimmer is suitable for circuit calibration, tuning, and adjustment applications in electronic equipment.