MikroTik S-C51DLC40D SFP CWDM Module 1.25G 40km 1510nm Dual LC DDM

MikroTik S-C51DLC40D SFP CWDM Module 1.25G 40km 1510nm

The MikroTik S-C51DLC40D is a 1.25G SFP CWDM optical transceiver module designed for long-distance single-mode fiber network deployments. Operating at a 1510nm CWDM wavelength, this module supports fiber links up to 40km and uses a Dual LC UPC connector for reliable duplex fiber connectivity.

Built for MikroTik fiber switching and routing environments, the S-C51DLC40D is ideal for expanding network capacity over existing fiber infrastructure using Coarse Wavelength Division Multiplexing (CWDM). It allows multiple optical channels to run over fiber, making it useful for ISPs, WISPs, enterprise networks, and long-distance backbone links.

The module includes DDM support, allowing compatible devices to monitor optical parameters such as transmit power, receive power, and module status. This helps network administrators troubleshoot fiber links and maintain stable optical performance without relying on guesswork, humanity’s favorite bad diagnostic tool.

Key Features

• 1.25G SFP CWDM optical transceiver module
• 1510nm CWDM wavelength
• Supports single-mode fiber links up to 40km
• Dual LC UPC connector
• DDM support for optical diagnostics and monitoring
• Designed for MikroTik SFP-compatible devices
• Ideal for CWDM fiber expansion and long-distance uplinks
• MTBF of approximately 100,000 hours at 25°C

Long-Distance CWDM Fiber Connectivity

The S-C51DLC40D is designed for CWDM fiber deployments where multiple wavelengths are used to increase network capacity over existing fiber infrastructure. Its 1510nm channel makes it suitable for use in CWDM systems, backbone links, and long-range fiber interconnects.

Single-Mode 40km Performance

With support for single-mode fiber and transmission distances up to 40km, this module is built for long-distance network links between buildings, towers, POP sites, data rooms, or ISP infrastructure.

Ideal Applications

• ISP and WISP fiber networks
• CWDM fiber channel expansion
• Long-distance backbone links
• Enterprise fiber uplinks
• Point-to-point single-mode fiber connections
• MikroTik switch and router fiber deployments