The 3339W-1-253 is a four-turn cermet trimming potentiometer manufactured by Bourns, featuring a unique planetary drive mechanism that enables precise wiper setting of a multiturn adjustment in a single-turn package size. This sealed, industrial-grade component offers a standard resistance range from 10 ohms to 1 megohm with ±10% tolerance and infinite resolution, delivering voltage adjustability of ±0.05% and resistance adjustability of ±0.1%. The device operates over a temperature range of -55°C to +150°C with a temperature coefficient of ±100 ppm/°C, and features a maximum torque of 3 oz-in., solderable pins, and an effective travel of 4 turns nominal. With its RoHS-compliant construction, dielectric strength of 600 VAC at sea level, and rotational life of 200 cycles, the 3339W-1-253 is well-suited for precision trimming applications in industrial instrumentation, signal processing circuits, and calibration systems where reliable, repeatable resistance adjustment is essential.