MikroTIk Pair of SFP modules, S-35LC20D (1.25G SM 20km T1310nm/R1550nm) + S-53LC20D (1.25G SM 20km T)

The MikroTik S‑3553LC20D is a high-performance SFP module pair that includes both the S‑35LC20D and S‑53LC20D, optimized for single-mode fiber connections up to 20 km. This matched bidirectional pair uses different wavelengths on a single fiber strand—TX1310nm/RX1550nm and TX1550nm/RX1310nm—enabling full-duplex communication over just one fiber core.

Ideal for creating cost-efficient point-to-point links, this SFP pair supports 1.25 Gbps (Gigabit Ethernet) speeds and uses LC connectors. They are hot-swappable and fully compatible with MikroTik devices as well as other standard SFP interfaces.

The matched S‑35LC20D/S‑53LC20D pair is particularly suited for point‑to‑point fiber links that require robust performance over long distances while minimizing fiber infrastructure costs. With a data rate of 1.25 Gbps, these modules provide efficient and stable connectivity for mission‑critical applications.

MikroTik S‑3553LC20D — a bidirectional SFP module pair designed for long-distance single-mode fiber connectivity. Whether you’re deploying long-range fiber in campus environments, data centers, or ISP backbones, the S‑3553LC20D pair ensures stable, energy-efficient, and low-latency performance with reduced cabling costs.