Glsun SPF-1G-BX20U-T02, SFP-BIDI transceivers are high performance, cost effective modules supporting dual data-rate of 1.25Gbps/1.0625Gbps and 20km transmission distance with SMF.The transceiver consists of three sections: an FP laser transmitter, a PIN photodiode integrated with a trans-impedance preamplifier (TIA) and MCU control unit. All modules satisfy class I laser safety requirements. The transceivers are compatible with SFP Multi-Source Agreement (MSA) and SFF-8472. For further information, please refer to SFP MSA.

Compatible Cisco Form Factor SFP
Max Data Rate 1.25Gbps Wavelength TX1310nm/RX1550nm
Max Cable Distance 20km Connector Simplex LC
Transmitter Type 1310nm FP Extinction Ratio 9dB
Media SMF Power Consumption <0.8W
Power Supply Voltage 3.3V Operating Case Temperature 0°C to +70℃ (C); -40°C to +85℃ (I)
Quality Certifications
Quality Testing

Wavelength Testing

Bit Error Rate Testing

Performance Testing

Final Testing

Production Workshop

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Dalton ****
So far these seem to be performing well enough for our small-biz backbone. Price was acceptable compared to other options.
Clair ****
This Cisco compatible single mode SFP Transceiver is a great buy and works beyond expectation.
Maninder ****
I've had it in place for a few months now and zero problems. Transfer is as expected.