Vishay KBU4G, Bridge Rectifier, 4A 400V, 4-Pin KBU. Bridge Type: Single Phase. Mounting Type: Through Hole. Diode Technology: Silicon Junction. Configuration: Single. Peak Non-Repetitive Forward Surge Current: 200A. Maximum Operating Temperature: +150 °C. Minimum Operating Temperature: -50 °C. Peak Forward Voltage: 1V. Peak Reverse Current: 5µA. Length: 23.7mm. Width: 7.1mm.