The 3386W-1-503LF is a 3/8" square single-turn cermet trimming potentiometer manufactured by Bourns with a resistance value of 50 kO (resistance code 503). It features a side-adjust (W-style) configuration with sealed industrial construction, available on tape and reel with 100% tin-plated (RoHS compliant) terminations. The potentiometer offers a resistance tolerance of ±10% standard, contact resistance variation of 2% or 3 ohms maximum, and an adjustment angle of 280° nominal with infinite resolution. It operates across a temperature range of -55°C to +125°C with a temperature coefficient of ±100 ppm/°C, and provides a power rating of 0.5 watts at 85°C. This component is ideal for precision circuit tuning and calibration applications in industrial equipment, instrumentation, and consumer electronics where reliable, sealed adjustment is required.