MikroTik SFP Module S-3553LC20D, 1.25Gb/s, 20km, Single-Mode, Pair (T1310nm/R1550nm) + (T1550nm/R1310nm)

The MikroTik S-3553LC20D is a high-performance SFP transceiver pair designed for long-distance single-mode fiber connections. Operating at 1.25 Gbps, this BiDi (Bi-Directional) module set enables full-duplex communication over a single fiber strand, with one module transmitting at 1310 nm and receiving at 1550 nm, and the other transmitting at 1550 nm and receiving at 1310 nm. Ideal for Gigabit Ethernet and Fiber Channel applications, it supports distances up to 20 km, making it perfect for campus, metropolitan, and enterprise networks.

Advantages

This transceiver pair offers cost-effective and efficient long-haul connectivity by utilizing a single fiber, reducing cabling costs. With hot-swappable capability and DDM/DOM support, network administrators can monitor real-time performance parameters. The modules are fully compliant with SFP MSA and IEEE 802.3z standards, ensuring interoperability with a wide range of networking equipment.

Suitable for

• Gigabit Ethernet links over single-mode fiber up to 20 km
• Fiber Channel storage area networks
• Metropolitan and campus network backbones
• ISP and telecom infrastructure

Key specifications

• Module Type: SFP (Small Form-Factor Pluggable)
• Data Rate: 1.25 Gbps
• Max Distance: 20 km
• Fiber Type: Single-Mode Fiber (SMF)
• Connector Type: LC Simplex
• Wavelength (Module A Tx/Rx): 1310 nm Tx / 1550 nm Rx
• Wavelength (Module B Tx/Rx): 1550 nm Tx / 1310 nm Rx
• Bi-Directional (BiDi): Yes
• Number of Fibers Required: 1 per module (2 modules form a link)
• DDM/DOM Support: Yes
• Hot-Swappable: Yes
• Compliance: SFP MSA, IEEE 802.3z
• Operating Temperature: 0°C to 70°C (32°F to 158°F)
• Power Consumption: < 1W

Recommendations

For optimal performance, use with MikroTik switches and routers that support SFP modules. Ensure the fiber patch cables are single-mode with LC connectors. This pair is a reliable solution for extending network reach without signal degradation.