S1J is a standard recovery SMD rectifier diode manufactured by Diotec Semiconductor, designed for 50/60 Hz mains rectification, power supplies, and reverse polarity protection applications. The device features a DC blocking voltage of 480 V, repetitive peak reverse voltage (V_RRM) of 600 V, and surge peak reverse voltage (V_RSM) of 600 V, with a maximum average forward rectified current of 1 A at 100°C junction temperature. Key electrical characteristics include a forward voltage of less than 1.1 V at 1 A, leakage current below 5 µA at 25°C, and a reverse recovery time of typically 1500 ns. The diode is housed in an SMA (DO-214AC) package with a thermal resistance of 75 K/W (junction-to-ambient) and 30 K/W (junction-to-terminal), making it suitable for standard commercial and industrial applications requiring reliable rectification and protection.