GBU8D is a single-phase diode bridge rectifier designed for 50/60 Hz mains rectification and power supply applications. It features four diodes in bridge configuration with a maximum alternating input voltage of 140 V RMS and a repetitive peak reverse voltage of 200 V. The device delivers 8.0 A maximum rectified output current with a cooling fin of 300 cm² at 100°C case temperature, with a forward voltage drop below 1.0 V at 8 A and a reverse recovery time of approximately 1500 ns. The GBU8D is UL recognized (File E175067), RoHS compliant, and available in free-standing or heatsink-mounted configurations, making it suitable for commercial-grade power conversion and rectification circuits.