MikroTik S-85DLC05D 1.25G SFP Optical Transceiver for SMB & Enterprise Networks

S-85DLC05D is a 1.25G multimode SFP transceiver for optical connections of up to 550 meters, designed for integration into network equipment with standard SFP slots requiring fiber optic connectivity within buildings or between adjacent structures. It is widely used in switches, routers, and other network devices where multimode fiber represents the optimal solution for medium distances in campus or datacenter infrastructures.

The transceiver operates at 850nm wavelength with a Dual LC UPC connector and supports 1.25G data rates, covering Gigabit connectivity needs over multimode fiber up to 550 meters. DDM (Digital Diagnostic Monitoring) support enables real-time monitoring of optical parameters — transmit power, receive power, and temperature — directly from the management interface, simplifying diagnostics and maintenance of optical links. The -40°C to +85°C operating range ensures reliability across varied thermal conditions.

S-85DLC05D is tested and compatible with MikroTik equipment featuring SFP 1G slots, including the RB260GS, RB2011iLS-IN, and other products in the lineup, as well as SFP devices from other manufacturers. An MTBF of 100,000 hours confirms reliability for permanent installations in production infrastructures. It installs directly into any standard SFP slot without additional configuration.

Recommended for Gigabit optical connections over multimode fiber in university campuses, office buildings, and datacenters where distances up to 550 meters rule out copper cable but do not justify the cost of single-mode fiber. The right choice for extending existing optical infrastructure with modules compatible with both MikroTik and third-party equipment.