The B125FD is a fast recovery bridge rectifier designed for medium-frequency rectification applications. It features a maximum alternating input voltage of 125 V RMS with a repetitive peak reverse voltage of 250 V, and delivers a maximum rectified output current of 1.0 A at 50°C with R-load. The device exhibits a forward voltage drop of less than 1.3 V at 1 A, a low reverse recovery time of approximately 300 ns, and a peak forward surge current rating of 40 A (50 Hz, 10 ms) or 44 A (60 Hz, 8.3 ms). With UL recognition (File E175067), RoHS and REACH compliance, and a junction temperature range of -50°C to +150°C, the B125FD is well-suited for audio power supplies and commercial-grade rectification circuits requiring fast switching performance.