The SSR1645Z from Solid State Devices is a Space Qualified Diode with a peak repetitive reverse and DC blocking voltage of 45 V. This diode has an average rectified forward current of 20 A and a peak surge current of 300 A. It has a maximum thermal resistance of 1.5 degrees C/W and a junction capacitance of 800 pF. The diode has a low forward voltage drop of 0.5-0.7 V and a low reverse leakage current of 200 µA. It features a guard ring for overvoltage protection and ceramic seals for improved hermeticity. The diode comes in an isolated hermetically sealed package.