Lightwin 1.25 Gbit/s SFP BiDi Transceiver, 1550nm TX / 1310nm RX, 3km, DDM, LC Simplex, Singlemode (LWO-SFP-5531-3)

When network infrastructure demands efficient use of existing fiber, the Lightwin LWO-SFP-5531-3 BiDi SFP transceiver answers with single-fiber operation. By transmitting at 1550 nm and receiving at 1310 nm over one simplex LC connection, it eliminates the need for paired fibers, cutting cabling costs and doubling capacity on a single strand. This module delivers 1.25 Gbit/s Gigabit Ethernet over distances up to 3 km on single-mode fiber, with Digital Diagnostics Monitoring (DDM) for real-time performance insight.

Who is it for

Network engineers and IT administrators managing enterprise LANs, campus networks, or service provider access links will value this transceiver for its simplicity and reliability. It is ideal for point-to-point links where fiber is scarce or expensive, and for upgrades that must avoid installing new cabling. The MSA-compliant design ensures compatibility with a wide range of switches, routers, and media converters from major vendors.

Main features

• Bi-Directional (BiDi) technology: single LC simplex connector for both transmit and receive
• Wavelengths: 1550 nm TX / 1310 nm RX, compliant with 1000BASE-BX standards
• Data rate: 1.25 Gbit/s for Gigabit Ethernet and Fiber Channel applications
• Maximum distance: 3 km over single-mode fiber (SMF)
• Digital Diagnostics Monitoring (DDM/DOM) for real-time monitoring of temperature, voltage, laser bias, TX/RX power
• Hot-pluggable SFP form factor for easy installation and replacement without downtime
• Low power consumption: typically under 1W, with 3.3V supply voltage
• Commercial operating temperature range: 0°C to 70°C
• DFB laser for stable, high-quality signal transmission
• MSA compliant for broad interoperability

Specifications

• Brand: Lightwin
• Model: LWO-SFP-5531-3
• MPN: LWO-SFP-5531-3
• EAN: 9120117656806
• Transceiver type: SFP
• Data rate: 1.25 Gbit/s
• Wavelength: 1550 nm TX / 1310 nm RX
• Max transfer distance: 3 km
• Connector: LC simplex
• Fiber type: Single-mode (SMF)
• Duplex system: BiDi (single fiber)
• DDM/DOM: Yes
• Hot-plug support: Yes
• Power consumption: < 1W
• Supply voltage: 3.3V
• Operating temperature: 0°C to 70°C
• Standard: IEEE 802.3z 1000BASE-BX
• Compliance: MSA

Tips

For optimal performance, pair this transceiver with a matching BiDi module on the opposite end: the remote unit must transmit at 1310 nm and receive at 1550 nm. Ensure the fiber is single-mode and the LC connector is clean before installation. Use the DDM interface to monitor link health and proactively address signal degradation. This module is not intended for multimode fiber; using it with MMF may cause excessive loss and unreliable links.