3386R-1-503LF is a 3/8" square single-turn cermet trimming potentiometer designed for precision resistance adjustment in industrial applications. It features a 50 kO resistance value with ±10% tolerance, a 280° nominal adjustment angle, and infinite resolution for fine-tuning. 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 has a temperature coefficient of ±100 ppm/°C. With RoHS compliant 100% tin-plated terminations, sealed construction, and UL 94V-0 flammability rating, this trimmer is suitable for applications requiring reliable and repeatable resistance adjustments in demanding environments.