The 3306F-1-503 is a 6 mm round single-turn Trimpot trimming potentiometer manufactured by Bourns, designed for industrial open-frame applications requiring precision resistance adjustment. This cermet-element potentiometer features a 50 kO resistance value with ±25% standard tolerance, an adjustment angle of 215° nominal, and a mechanical angle of 260° ±20°. It operates over a temperature range of -25°C to +100°C with a power rating of 0.2 watt at 70°C, contact resistance variation of 3% maximum, and essentially infinite resolution. The device includes dust-resistant and splash-resistant covers, cross-slot adjustment options for both horizontal and vertical mounting styles, and solderable pins for reliable PCB integration. It is RoHS compliant and commonly used in instrumentation, signal processing, and equipment calibration where precise trimming and long-term stability are required.