S-3553LC20D MikroTik Server Transceiver

Enterprise 1GbE Singlemode SFP Optical Transceiver for Long-Reach Uplinks with the S-3553LC20D

The S-3553LC20D is a MikroTik SFP optical transceiver engineered for stable 1GbE singlemode fiber connectivity in access, aggregation, and data centre uplink roles. Designed for 1GBASE-LX/LH-class operation at 1310 nm, the S-3553LC20D supports 1.25Gbps signaling to maintain clean link margins while presenting as 1G Ethernet to the host platform.

In architectures where copper distance limits and EMI constraints impact reliability, the S-3553LC20D enables predictable optical transport over singlemode runs up to 20 km. The LC-duplex interface aligns with common patching standards, and the SFP form factor integrates directly into standard SFP cages on switches and routers, preserving port density and simplifying sparing strategies. This optical approach reduces dependency on intermediate media converters, keeps latency consistent, and supports orderly expansion of fiber-based topologies between racks, rooms, or buildings.

Why Choose the S-3553LC20D?

The S-3553LC20D provides a practical density-to-performance profile for enterprise 1GbE fiber uplinks, combining long-reach capability with the operational simplicity of a standards-aligned SFP module. Deploy the S-3553LC20D to scale layer-2/3 edge connectivity, extend aggregation links, and maintain consistent link behavior across distributed facilities without changing switch platforms.

MikroTik designs optics with a focus on interoperability within real-world network deployments, prioritising stable link negotiation, consistent optical characteristics, and dependable operation across typical data centre temperature and cabling conditions. This engineering approach supports maintainable networks that align with modern structured cabling, modular switching, and inventory-driven operations.

Key Applications:

• 1GbE singlemode switch uplinks
• Data centre interconnect between rooms or buildings
• Access-layer fiber extensions beyond copper limits
• Aggregation links for campus networks

At Happyware - Server Hardware you benefit from non-binding offers tailored to your rollout plan for the S-3553LC20D, enabling clean standardisation across sites. Extended warranty options up to 6 years provide additional investment security for long-lived network infrastructure.