The ES1D is an SMA Fast Recovery Diode manufactured by KEXIN. It is a 1 Amp, 600 Volt, 1.9nS, RoHS compliant diode rectifier. It has a max forward voltage of 1.3V @ 1A and a maximum surge current of 30A at 8.3ms. The typical junction capacitance is 5.0pF @ 1KH. It has an epoxy coated case with a mounting clip for easy installation. The ES1D is ideal for use in a variety of power supply applications.