The 25G BX BIDI SFP28 transceivers are high-performance, cost-effective modules supporting a data rate of 25.78Gbps and a 10km transmission distance with SMF. The transceiver consists of a DFB laser transmitter, a PIN photodiode integrated with a trans-impedance preamplifier (TIA), and an MCU control unit. All modules satisfy class I laser safety requirements. The transceivers are compatible with SFP Multi-Source Agreement and SFF-8472 digital diagnostics functions.