The 3329H-1-503LF is a 1/4" round single-turn cermet industrial trimming potentiometer manufactured by Bourns, designed for precision voltage and resistance adjustment applications. This sealed trimpot features a 50 kO resistance value with ±10% tolerance, infinite resolution, and an adjustment angle of 240° nominal, providing fine-tuning capability across a wide range of circuit configurations. The device operates over a temperature range of -55°C to +150°C with a temperature coefficient of ±100 ppm/°C, and is rated for 0.5 watt power dissipation at 85°C. It exhibits excellent environmental performance with 1,000 megoohms minimum insulation resistance at 500 VDC, 600 VAC dielectric strength at sea level, and 200 cycles rotational life with controlled resistance and contact resistance variation. The 3329H-1-503LF is ideal for industrial control circuits, instrumentation, audio equipment, and other applications requiring sealed, reliable potentiometer performance with RoHS-compliant 100% tin-plated terminations.