PWR221T-30-1R00F is a TO-220 style thick film power resistor designed for current limiting, capacitor discharge, and current measurement circuits. It features a 1 O resistance value with ±1% tolerance and a 30 W power rating at 25°C case temperature, utilizing thick film on alumina ceramic technology for reliable performance. The resistor offers low inductance (0.1 µH maximum), a thermal resistance of 4.2°C/W, and operates over a wide temperature range of -55°C to +150°C. It is AEC-Q200 compliant for automotive applications and RoHS compliant, with a dielectric strength of 2 KV AC and insulation resistance of 10 GO. Common applications include power supplies, motor drives, test and measurement equipment, and rectifiers where high power handling and precision are required.