MikroTik MikroTik S-31DLC20D SFP 1.25G Module 20 km Single Mode

Last updated: May 8, 2026

MikroTik MikroTik S-31DLC20D SFP 1.25G Module 20 km Single Mode The MikroTik S-31DLC20D SFP 1.25G Module is a single-mode fiber optic transceiver designed for reliable long-distance Gigabit connectivity. With support for 20 km transmission over single-mode fiber and standard 1.25 G uplink speeds, this module is ideal for linking switches, routers, and network infrastructure in enterprise, ISP, and campus environments where fiber is required to cover extended distances. Product Features Single-Mode Fiber Support Designed for use with single-mode optical fiber for long-distance network links up to 20 km. 1.25 Gigabit Throughput Supports 1.25 G optical data rates, providing high-speed connectivity between network devices. SFP Hot-Swappable Module Standard SFP form factor allows easy installation and replacement without powering down equipment. Dual LC Connector Equipped with a dual LC interface for reliable fiber connections. Wide Compatibility Works with MikroTik SFP-compatible switches, routers, and fiber infrastructure, as well as many third-party devices supporting standard 1.25 G SFP modules. Product Specifications Model: S-31DLC20D Data Rate: 1.25 Gbps Fiber Type: Single-mode Maximum Distance: 20 km Connector Type: Dual LC Form Factor: SFP Wavelength: Typical single-mode wavelength (1310/1490 nm dependent on configuration) Operating Temperature: Commercial range Compatible With: SFP-equipped routers and switches