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LC Duplex 1000BASE-SX SFP Module (1310 nm, 2 km) – DOM Supported sfp module

Highlights

  • 1G SFP module with 1310 nm optics for ~2 km reach.
  • LC duplex connector, DOM support, and hot-swappable design.
  • Programmed for Cisco compatibility; ideal for replacements.

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Product Description

This hot-swappable SFP transceiver is designed for 1000BASE-SX applications, supporting short- to medium-reach fiber connections with a typical transmission distance of up to 2 km. It features a 1310 nm optical transmitter with a duplex LC interface and supports Digital Optical Monitoring (DOM) for real-time performance tracking. Compatible with Cisco and similar platforms, it meets MSA standards for easy integration and field replacement.

Key Features

  • Hot-pluggable SFP design​ – Enables easy installation and replacement without system shutdown.
  • 1310 nm wavelength with LC duplex interface​ – Optimized for fiber runs up to 2 km.
  • Digital Optical Monitoring (DOM/DDM)​ – Provides real-time diagnostics including Tx/Rx power, temperature, and laser bias current.
  • Cisco-compatible firmware​ – Ready for use in Cisco and other vendor devices (check compatibility prior to deployment).
  • Low power consumption & robust metal housing​ – Ensures reliable operation in demanding environments.

SFP MODULE A+

Specifications

Parameter Details
Model Number SFP1G-SX-31 (Cisco-compatible, P/N 190894)
Standard IEEE 802.3 (1000BASE-SX), SFP MSA, SFF-8472 (DOM)
Data Rate 1 Gbps
Wavelength 1310 nm
Connector LC Duplex (UPC)
Max. Distance ~2 km (fiber-dependent)
Tx Power -9.5 dBm to -3 dBm (typical)
Receiver Sensitivity ≤ -17 dBm
Power Supply 3.3V
Power Consumption <1 W
Operating Temperature 0°C to 70°C
Management DOM via I²C interface
Form Factor SFP (hot-pluggable)

Note:​ While labeled as "1000BASE-SX," this module uses 1310 nm optics, which is atypical for SX standards (commonly 850 nm). Confirm wavelength and compatibility with the specific datasheet before deployment.

Typical Applications

  • Campus, metro, or urban fiber links requiring 1G speeds and ~2 km reach.
  • Rapid replacement or sparing for Cisco-based network equipment.
  • ISP access networks or aggregation points where DOM aids in remote monitoring.
  • Lab or test environments requiring flexible, hot-swappable 1G fiber interfaces.

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