3Com 3CSFP85 Compatible 1.25Gbps BIDI SFP 1000BASE-BX20 TX1550nm/RX1310nm 20km SMF Simplex LC DDM/DOM Optical Transceiver Module 3Com 3CSFP85 compatible optical transceiver is a single fiber bidirection 1000Mbps Small Form-factor Pluggable SFP BIDI module for use in 1000BASE Ethernet network. SFP BX20D-5531 provides 1Gb/s throughput up to 20km over single-mode fiber (SMF) using 1550nm in transmitter side and 1310nm in receiver side. This transceiver is fully compliant with SFP Multi-Source Agreement (MSA), IEEE 802.3 1000BASE-BX20 and SERDES standard. Its electrical interface is MSA compliant 20-pin edge type connector and the optical interface is Simplex LC connector. The full-duplex SFP transceiver features highly reliable DFB transmitter and PIN photo detector to offer high performance interconnection at 1.25Gbps data rate. Built-in Digital Diagnostic Monitoring/Digital Optical Monitoring (DDM/DOM) support is present for real-time performance monitoring via 2-wire (TWI/I2C) interface. Our modules are factory pre-programmed for compatibility, perform alternatively to genuine 3Com 3CSFP85 transceivers. Feature Equivalent to 3Com 3CSFP85 in function Hot pluggable SFP fiber optic transceiver module Data rate up to 1.25Gbps TX1550nm/RX1310nm DFB transmitter PIN photo receiver Simplex LC optical connector Link distance up to SMF 20km Built-in digital diagnostic via 2-wire interface Single 3.3V power supply voltage Power consumption Ambient temperature range 0 to 70°C for commercial application Compliant with INF-8074i, SFF-8472 Compliant with IEEE 802.3 1000BASE-BX20 Compliant with RoHS, REACH, CE, FCC standards Application Gigabit Ethernet Enterprise Campus Data Center Specification 3Com Compatible P/N 3CSFP85 Form Factor SFP Max Data Rate 1.25Gbps Max Distance 20km (12.4 miles) Wavelength TX1550nm/RX1310nm Connector Simplex LC DDM/DOM Support Media SMF Transmitter Type DFB Receiver Type PIN Transmitter Power -9 to -3dBm Receiver Sensitivity < -23dBm Extinction Ratio 9dB Receiver Overload -3dBm Modulation Format NRZ Power Budget 14dB Power Consumption 0.7W Commercial Temperature Range 0 to 70°C (32 to 158°F)
