MikroTik S-3553LC20D – 1.25G SFP Single-Mode Fibre Transceiver, 20km

Description

MikroTik S-3553LC20D – 1.25G BiDi SFP Transceiver Kit, 20km

The MikroTik S-3553LC20D is a pair of 1.25 Gbps single-mode SFP optical transceivers designed for reliable fibre connectivity over distances of up to 20 kilometres. The kit provides two complementary modules that transmit and receive data at different wavelengths, enabling bidirectional communication over a single optical fibre strand. It is suitable for network operators, internet service providers, enterprise IT teams and fibre installation professionals building or extending Gigabit network links.

Single-fibre connectivity for efficient deployments

Traditional fibre links often use separate optical fibre strands for transmitting and receiving data. The MikroTik S-3553LC20D kit uses bidirectional optical technology to support communication in both directions over one fibre strand. This can help make efficient use of available fibre infrastructure, particularly where fibre capacity is limited or additional cable installation would be costly.

The kit contains two complementary transceivers. The S-35LC20D module transmits at 1310 nm and receives at 1550 nm, while the S-53LC20D module transmits at 1550 nm and receives at 1310 nm. The complementary wavelengths allow the two ends of the connection to communicate correctly over the same single-mode fibre.

1.25 Gbps Gigabit Ethernet connectivity

Each module supports a data rate of 1.25 Gbps and uses the standard SFP form factor. This makes the kit suitable for compatible Gigabit Ethernet equipment with SFP interfaces. Potential applications include switch-to-switch fibre connections, router uplinks, links between network cabinets, building-to-building connectivity and access network infrastructure.

The maximum specified link distance is 20 km under appropriate fibre and optical-link conditions. Actual performance depends on the installed fibre, connector quality, optical losses, equipment compatibility and the overall link budget. Confirm the requirements of your planned installation before deployment.

LC optical connector and single-mode fibre

The S-3553LC20D uses an LC UPC optical connection and is designed for single-mode fibre. The compact SFP format fits supported SFP ports without requiring a separate external optical converter. Correct fibre type, connector cleanliness and careful handling are important when installing optical transceivers.

Before connecting the modules, check that the transceiver at each end is the correct complementary type. Using two modules with the same transmit and receive wavelength arrangement will not provide the intended bidirectional link. Inspect and clean fibre connectors using appropriate fibre-cleaning procedures, and avoid looking directly into an active optical port.

Digital diagnostics and compatibility

The transceivers support Digital Diagnostics Monitoring (DDM), which can help compatible network equipment monitor optical parameters and assist with troubleshooting. Diagnostic availability and the information displayed depend on the host device and its software.

MikroTik identifies tested compatibility with selected devices, including the RB260GS, RB2011 series models and CCR1036-12G-4S. The manufacturer also states that the modules are compatible with non-MikroTik SFP devices. Compatibility should still be checked against the specific switch, router or other host equipment before ordering.

Typical applications

The MikroTik S-3553LC20D can be considered for ISP distribution networks, Gigabit fibre uplinks, enterprise network interconnections, campus infrastructure, links between nearby or distant buildings, and other installations requiring single-mode fibre connectivity over a single strand. It is especially useful when an existing fibre route provides only one available strand for the link.

Technical specifications

Product code: S-3553LC20D
Product type: Pair of bidirectional SFP optical transceivers
Data rate: 1.25 Gbps
Maximum specified distance: Up to 20 km
Optical mode: Single-mode fibre
Connector: Single LC UPC
Transmit/receive wavelengths: 1310 nm / 1550 nm, depending on the complementary module
DDM: Supported
Tested ambient temperature range: -40°C to +70°C
Form factor: SFP

Why source MikroTik S-3553LC20D from Globikom?

Globikom supplies networking, connectivity and IT infrastructure equipment for customers in Kenya and across Africa. The MikroTik S-3553LC20D is an option for businesses, ISPs, network integrators and infrastructure contractors that need a matched pair of single-fibre optical transceivers for compatible Gigabit SFP equipment.

Contact Globikom to confirm current stock, delivery lead time, equipment compatibility and pricing for your project. Customers planning deployments across multiple sites can provide their equipment models, fibre type and required link distance to help verify the appropriate transceiver solution before purchase.

Choose the MikroTik S-3553LC20D when your network requires a complementary pair of 1.25 Gbps single-mode SFP transceivers for bidirectional communication over a single fibre strand, with a specified reach of up to 20 km.

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