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Description
Specifications
Resources
Package Contents
The MikroTik HS-31DLC20D is a reliable, industrial-grade 1G/2.5G SFP module designed for long-distance single-mode links up to 20 km. It uses the widely supported 1310 nm wavelength and an LC connector for full-duplex operation, making it a perfect fit for backbone links, campus networks, industrial deployments, and ISP infrastructure.
This new model delivers all the essential features of our popular S-31DLC20D, but now with 2.5G support at the same affordable price. A straightforward upgrade path for customers who want additional bandwidth while preserving existing fiber installations.
The module includes built-in digital diagnostics (DDM) for monitoring optical power, voltage, temperature, laser bias current, and other key parameters. These functions help detect abnormal activity or when customizable operating limits are exceeded. Monitoring makes it easier to plan ahead, make informed decisions, and schedule upgrades or maintenance based on real performance data.
This new model delivers all the essential features of our popular S-31DLC20D, but now with 2.5G support at the same affordable price. A straightforward upgrade path for customers who want additional bandwidth while preserving existing fiber installations.
The module includes built-in digital diagnostics (DDM) for monitoring optical power, voltage, temperature, laser bias current, and other key parameters. These functions help detect abnormal activity or when customizable operating limits are exceeded. Monitoring makes it easier to plan ahead, make informed decisions, and schedule upgrades or maintenance based on real performance data.
Features
- 1G/2.5G Single Mode Module
- Up to 20km
- Duplex LC connector
- Wavelength 1310 nm
| Details | |
|---|---|
| Product code | HS-31DLC20D |
| Format | SFP |
| Connector | Duplex LC connector |
| Mode | Single mode |
| Data Rate | 1G/2.5G |
| Wavelength | 1310 nm |
| Distance | Up to 20 km |
| Receiver Differential Output Voltage | 300 to 600 mVpp (Into 100Ω differential termination) |
| LOS Output Voltage-High | Vcc-0.5 to Vcc V (LOS is an open collector output. Should be pulled up with 4.7kΩ – 10kΩ on the host board. Normal operation is logic 0; loss of signal is logic 1) |
| LOS Output Voltage-Low | Vee to Vee+0.5 V (LOS is an open collector output. Should be pulled up with 4.7kΩ – 10kΩ on the host board. Normal operation is logic 0; loss of signal is logic 1) |
| Output Power | -5 to 0 dBm (The optical power is launched into 9/125μm SMF) |
| Receiver Sensitivity (OMA) | -20 dBm (Measured with a PRBS 27-1 test pattern @2.5Gbps, worst-case extinction ratio, BER ≤1×10-10) |
| LOS-Deasserted (Avg.) | -21 dBm |
| LOS-Asserted (Avg.) | -35 dBm |
| LOS-Hysteresis | 0.5 to 5 dB |
| Digital Diagnostics (DDM) | Yes |
| Details | |
|---|---|
| Included | (1) HS-31DLC20D SFP Module |
LC , SFP
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