The 78PR100LF is a multi-turn trimmer potentiometer featuring a 1-1/4" rectangular cermet design with side adjustment capability. It offers a resistance range of 10 Ohms to 2 Megohms with ±10% tolerance (±20% for values below 100 Ohms), and supports a maximum input voltage of 300 Vdc or rms with a power rating of 1.0 Watts at 70°C. The device provides 22 turns of electrical travel with essentially infinite resolution and operates reliably across a temperature range of -55°C to +125°C, featuring a temperature coefficient of ±100 ppm/°C and 1,000 Megohms minimum insulation resistance. With its sealed 85°C Fluorinert construction, clutch-action mechanical stops, and robust environmental performance including thermal shock, vibration, and moisture resistance, the 78PR100LF is well-suited for precision calibration and adjustment applications in instrumentation, test equipment, and industrial control systems.