MikroTik S-85DLC05D 1.25G SFP Transceiver 850nm Dual LC

The MikroTik S-85DLC05D SFP Module is a high-performance, single-mode fiber optic transceiver for long-range connectivity. Designed for 1.25Gbps speeds over 20km, it’s ideal for enterprise and ISP networks.

this module ensures reliable, high-speed data transfer with MikroTik and third-party devices.

Why Choose MikroTik S-85DLC05D SFP Module?

Long-Range Fiber Performance

The MikroTik  SFP Module supports 1.25Gbps data rates over single-mode fiber, reaching up to 20km with dual LC connectors at 1310nm wavelength. Its hot-swappable design ensures seamless integration into SFP-compatible switches and routers. Built for durability, it operates in extreme temperatures, making it suitable for outdoor deployments.

• Extended Reach: 20km range for distant connections.
• High Compatibility: Works with MikroTik and third-party SFP ports.
• Robust Design: Operates from -40°C to +85°C for reliability.

A limitation is its single-mode fiber requirement, which may not suit short-range multimode setups without adapters.

Use Cases for MikroTik S-85DLC05D SFP Module

ISP Backbone Connectivity

The S-85DLC05D is ideal for ISPs connecting remote towers or data centers, offering stable 1.25Gbps links over 20km. It integrates with MikroTik switches like the CRS317-1G-16S+RM, paired with HP’s enterprise solutions for network monitoring, ensuring seamless backbone performance.

Enterprise Campus Networking

In large campuses, the module links buildings with fiber, supporting high-speed data for VoIP and streaming. It’s compatible with Ubiquiti’s UniFi switches for hybrid deployments, providing reliable inter-building connectivity without signal loss over long distances.

Industrial and Outdoor Deployments

For industrial sites or outdoor networks, the module’s wide temperature range ensures consistent performance in harsh conditions. It connects remote surveillance systems or IoT devices via fiber, though proper cable protection is needed for rugged environments.

Compatibility with Network Devices

The  Module supports 1.25Gbps SFP ports, compatible with MikroTik devices like the RB4011iGS+RM and CRS328-24P-4S+RM. It also works with third-party switches and routers from brands like Cisco and HP, using standard single-mode fiber with LC connectors. Pair it with HP’s networking solutions, but verify SFP port compatibility to ensure optimal performance.

Technical Specifications of MikroTik the Module

Hardware Details

• Data Rate: 1.25 Gbps
• Fiber Type: Single-mode
• Wavelength: 1310 nm
• Connector: Dual LC
• Transmission Distance: Up to 20 km
• Optical Output Power: -9 to -3 dBm
• Receiver Sensitivity: -28 dBm
• Operating Temperature: -40°C to +85°C (-40°F to 185°F)
• Cable Type: 9/125 µm single-mode fiber
• Compatibility: SFP MSA compliant, IEEE 802.3z
• Dimensions: 0.55 x 2.24 x 0.31 inches (14 x 57 x 8 mm)
• Weight: 0.05 lbs (20 g)
• Certifications: CE, RoHS

Package Contents

• S-85DLC05D SFP Module
• Quick Start Guide

The compact module fits standard SFP ports, but ensure proper fiber termination for reliable connections.

Benefits of MikroTik S-85DLC05D SFP Module

Reliable Long-Distance Connectivity

The module delivers stable 1.25Gbps speeds over 20km, ideal for connecting remote sites without repeaters. Its low power consumption ensures efficiency, while the hot-swappable design allows quick replacements without downtime. The dual LC connectors provide secure, high-quality fiber links.

• Long-Range Performance: 20km reach for distant networks.
• Hot-Swappable Design: Simplifies maintenance and upgrades.
• Energy Efficient: Low power draw for continuous operation.

A drawback is the need for single-mode fiber, which may require specific cabling infrastructure not suited for short-range multimode setups.

Broad Device Compatibility

The module adheres to SFP MSA standards, ensuring compatibility with a wide range of SFP-enabled devices beyond MikroTik, including Cisco and Juniper. Its robust design withstands environmental challenges, making it versatile for indoor and outdoor applications.