The 3059J-1-203 is a Trimpot® trimming potentiometer manufactured by Bourns, designed for precision resistance adjustment in industrial applications. This multiturn cermet device features a 1-1/4" rectangular sealed construction with 22 turns nominal effective travel, providing infinite resolution and ±0.05% resistance adjustability. The potentiometer operates over a temperature range of -55°C to +150°C with a power rating of 1.0 watt at 70°C, and offers excellent environmental performance including MIL-STD-202 humidity compliance and 50G shock resistance. With a resistance tolerance of ±10% standard and contact resistance variation of 1.0% or 1 ohm maximum, this component is ideal for calibration, tuning, and compensation applications in instrumentation, telecommunications, and industrial control systems.