The DL4001 is a 1A, 50V standard recovery rectifier diode in a surface mount MELF package. It features a forward voltage of 1.1V at 1A and a peak surge current of 30A.
DL4002-13-F is a 100V, 1A standard recovery rectifier diode from Diodes Incorporated. It features a glass passivated junction, low forward voltage drop, and is housed in a surface-mount MELF package.