3386F-1-501TLF is a 3/8" square single-turn cermet trimming potentiometer designed for precision resistance adjustment in industrial applications. This top adjust model features a 500 ohm resistance value with ±10% tolerance, 0.5W power rating at 85°C, and 280° nominal adjustment angle. The sealed construction provides environmental protection, while the infinite resolution cermet element ensures smooth, precise adjustments. With 100% tin-plated terminations for RoHS compliance and dielectric strength of 900 VAC at sea level, this trimmer is ideal for calibration, tuning, and fine-tuning applications in electronic circuits.