Fiber optic transceiver module MikroTik S-C59DLC40D

The MikroTik S-C59DLC40D is a single-mode SFP fiber optic transceiver module designed for 1.25 Gbit/s (1250 Mbit/s) links. Operating at a wavelength of 1590 nm and supporting a reach of up to 40 km, the module uses a dual LC connector and includes Digital Diagnostics Monitoring (DDM). It is compatible with MikroTik equipment and other devices that accept standard SFP modules, and comes in a nickel-colour housing.

Advantages

The S-C59DLC40D offers single-mode operation for long-distance connections, compact SFP form factor for easy hot-plug installation, and DDM support for real-time monitoring of optical parameters. Its dual LC connector ensures standard fiber connectivity while the 1590 nm wavelength and 40 km reach make it suitable for metro and campus links.

Suitable for

• Point-to-point long-distance optical links up to 40 km
• Interconnects between network switches and routers with SFP ports
• Metro, campus, and access network segments requiring 1.25 Gbit/s

Key specifications

• Interface type: SFP
• Maximum data transfer rate: 1250 Mbit/s (1.25 Gbit/s)
• Optical mode: Single-mode
• Wavelength: 1590 nm
• Maximum reach: 40 km
• Connector: Dual LC
• Diagnostics: DDM (Digital Diagnostics Monitoring)
• Product colour: Nickel
• Manufacturer model: MikroTik S-C59DLC40D

How to use

Insert the S-C59DLC40D module into an available SFP port on a compatible network device while the device is powered on or off according to the host equipment instructions. Connect single-mode fiber cables with LC connectors to the module’s dual LC ports, ensuring correct polarity. Verify link status on the host device and monitor optical parameters via DDM if supported by the equipment. Follow standard electrostatic discharge (ESD) precautions during handling and install dust caps when the module is not in use.

Usage recommendations

Use single-mode fiber with appropriate attenuation for distances up to 40 km and verify compatibility with the host device’s SFP vendor restrictions. For reliable operation, maintain clean connectors and monitor DDM values to detect signal degradation early.