BlueOptics BO28C3443620DIN cSFP 2-Channel BiDi Transceiver, LC-Duplex, 1000BASE-2BX-U, Singlemode Fiber, TX:1310nm/RX:1490nm, 20km, -40°C to +85°C, DDM

Telecom engineers deploying fiber-to-the-antenna links in harsh outdoor cabinets rely on the BlueOptics BO28C3443620DIN cSFP transceiver for dependable bidirectional data over a single strand of singlemode fiber. This compact module packs two independent 1000BASE-2BX-U channels into a single cSFP slot, doubling port density without sacrificing performance. Each channel transmits at 1310nm and receives at 1490nm, enabling full-duplex communication over distances up to 20 kilometers. With an industrial operating range of -40°C to +85°C and integrated Digital Diagnostic Monitoring, it is built for remote base stations, roadside cabinets, and other temperature-extreme environments.

Key specifications

• Form factor: cSFP (compact SFP) with 2 bidirectional channels
• Data rate: 1.25 Gbps per channel (1000BASE-2BX-U)
• Connector: LC-Duplex
• Fiber type: Singlemode (SMF)
• Wavelengths: TX 1310nm / RX 1490nm
• Reach: up to 20 km
• Operating temperature: -40°C to +85°C
• Digital Diagnostic Monitoring (DDM): Yes
• Hot-pluggable, MSA compliant

Why choose it

This transceiver solves the challenge of limited fiber availability by using BiDi technology—transmit and receive on a single fiber—cutting cabling costs in half. The cSFP form factor doubles the channel density compared to standard SFP, making it ideal for high-port-count aggregation switches. Its extended temperature range and DDM support allow proactive monitoring of optical parameters, reducing downtime in critical infrastructure.

Ideal use cases

• Mobile backhaul and fronthaul links in outdoor enclosures
• Industrial Ethernet networks in factories or utilities
• Fiber-to-the-building (FTTB) distribution where fiber is scarce
• High-density data center interconnects requiring compact optics

Good to know

The BO28C3443620DIN is fully compliant with the cSFP MSA and interoperable with other MSA-compliant devices. It supports hot-swapping, allowing replacement without powering down the system. Always pair with a matching BiDi transceiver on the opposite end (TX/RX wavelengths reversed) for proper link operation.