1N4001 is a Schottky diode from Toshiba. It has a rated current of 1A and a reverse peak voltage of 50-2000V. The package is DO-204AL. The maximum average forward rectified current at 75°C is 1A. The maximum peak forward current at 15Hz or greater is 10A. The maximum forward surge current at 50Hz half sine-wave is 50A.