GL34J is a standard recovery SMD rectifier diode manufactured by Diotec Semiconductor, designed for 50/60 Hz mains rectification, power supplies, and polarity protection applications. It features a repetitive peak reverse voltage (V_RRM) of 600 V with a surge peak reverse voltage (V_RSM) of 600 V, a maximum average forward rectified current (I_FAV) of 0.5 A, and a forward voltage (V_F) less than 1.3 V at 0.5 A. The device exhibits a reverse recovery time (t_rr) of approximately 1500 ns and operates over a junction temperature range of -50°C to +175°C, with a thermal resistance of 150 K/W (junction to ambient). The GL34J is housed in a Mini MELF (DO-213AA) plastic package compatible with SOD-87, offering high power dissipation capability and compliance with RoHS and REACH standards, making it suitable for commercial and industrial-grade applications.