Use your thermal design experience with power semiconductors in TO-220 and TO-126 style power packages to help you get the most out of this unique family of power resistors. The thermal design issues are the same where power handling capability is based on the case temperature which is maintained in your design. MP820 and MP821 TO-220 Style Power Package with Metal Mounting Tab • 20 Watts at +25°C Case Temperature derated to zero at +175°C. • Metal Heat Sink Mounting Tab. • MP820 Resistance Range of 10.0 ohm to 10.0 K. • MP821 Resistance Range of 0.020 ohm to 9.99 ohm. • Resistor element is electrically isolated from the mounting surface. • Non-Inductive design for high speed switching, snubbers, and rf applications.