The 3059Y-1-503 is a Bourns Trimpot® trimming potentiometer designed for industrial applications requiring precision resistance adjustment. This multiturn cermet device features a 50 kO standard resistance value with ±10% tolerance, 22 turns of effective travel, and infinite resolution for fine-tuning circuit parameters. The potentiometer operates across a temperature range of -55°C to +150°C with a temperature coefficient of ±100 ppm/°C, and delivers 1.0 watt power rating at 70°C (maximum 400 volts). Its sealed rectangular housing (1.25 inches) with flexible solderable leads and MIL-PRF-22097 qualification makes it suitable for demanding industrial, instrumentation, and military applications where reliable, repeatable adjustments are essential.