MikroTik HS-55DLC80D SFP Optical Module SM 80km 1.25G 1550nm

MikroTik HS-55DLC80D — Optical Module for High-Speed ​​Networks

The MikroTik HS-55DLC80D is an ideal choice for users seeking a reliable solution for long-distance fiber-optic links. This optical module, featuring a compact SFP form factor, supports data rates of 1G and 2.5G, making it versatile enough for a wide range of network scenarios—from standard setups to advanced applications. With a reach of up to 80 km over single-mode fiber (9/125 µm SMF) and operation at a wavelength of 1550 nm, it is perfect for large-scale networks, even in demanding conditions. Its extended operating temperature range of -40 to +70 °C allows for use in outdoor environments where durability is essential.

Performance and Flexibility for Long-Distance Transmission

The MikroTik HS-55DLC80D is designed for maximum efficiency and reliability. Support for both 1G and 2.5G speeds in a single device ensures easy integration into existing and future fiber-optic networks. Thanks to high receiver sensitivity (OMA) of up to -28 dBm and a transmitter output power range of -2 to +3 dBm, it can handle signals over extreme distances, ensuring stable and high-speed data transmission.

Durability in Demanding Conditions

With an extended operating temperature range of -40 to +70 °C, this module is suitable for use in harsh outdoor environments. Its low maximum power consumption of 1 W contributes to energy efficiency and reliable operation. Loss of Signal (LOS) signaling with 0.5 to 5 dB hysteresis enables precise line monitoring and minimizes downtime.

Technical Specifications and Compatibility

• Fiber type: Single-mode (9/125 µm SMF)
• Connector: Dual LC UPC for easy integration into optical infrastructure
• Receiver differential output voltage: 300-600 mVpp (100 Ω termination)
• LOS output: Open collector; requires a 4.7 kΩ to 10 kΩ pull-up resistor
• LOS thresholds: Deactivation at -29 dBm, activation at -40 dBm; hysteresis 0.5-5 dB

These features ensure seamless compatibility with most available equipment and network infrastructures.

Loss of Signal (LOS) Signaling

The Loss of Signal (LOS) function provides reliable indication of transmission status. The LOS deactivation threshold is -29 dBm, while activation occurs at -40 dBm; combined with 0.5 to 5 dB hysteresis, this ensures stable and accurate operation even during signal fluctuations. This mechanism is crucial for maintaining network stability and minimizing downtime.