Enhance Gigabit Ethernet Networks with SFP-GE-MM Multimode Fiber Transceiver (Up to 550m)

Overview

The SFP-1G-SX Compatible transceiver provides robust 1 Gigabit Ethernet connectivity for short-range networking applications. Built to the industry-standard 1000BASE-SX specification, this Small Form-factor Pluggable (SFP) module utilizes an 850nm wavelength to transmit data over Multimode Fiber (MMF).

It is the ideal solution for LAN connections within a building, connecting access switches, servers, and firewalls. With a reach of up to 550 meters on 50/125µm multimode fiber (OM2 or higher), it offers a reliable, cost-effective upgrade from copper cabling without the high cost of single-mode optics.

Key Features

• Gigabit Speed: Supports data rates of 1.25 Gbps (1000 Mbps).
• Standard Compliance: Fully compliant with IEEE 802.3z 1000BASE-SX standards.
• Wavelength: 850nm VCSEL (Vertical-Cavity Surface-Emitting Laser).
• Distance: Up to 550m on OM2/OM3/OM4 fiber (275m on older OM1 fiber).
• Interface: Standard Duplex LC connector.
• DDM Support: Includes Digital Diagnostic Monitoring (DDM) to view real-time parameters like temperature, optical power, and voltage.
• Hot-Swappable: Plug-and-play installation without rebooting equipment.

Applications

The 1000BASE-SX SFP is widely deployed in enterprise and industrial networks:

• Access Layer Uplinks: Connecting edge switches to distribution switches in the same building.
• Server Connections: Linking older servers with Gigabit SFP NICs to the network.
• Fiber to the Desktop: Providing secure, high-speed fiber connections to workstations.
• Media Converters: Converting copper signals to fiber for extending network reach beyond the 100m limit of Ethernet cables.

Specifications

Cross-Platform Compatibility

Our 1.25G SX transceivers are programmed to meet MSA (Multi-Source Agreement) standards, ensuring they function seamlessly with major networking brands. They are functionally equivalent to the following OEM part numbers:

Fiber Cable Compatibility

The distance achieved by this module depends on the grade of Multimode fiber used:

• OM1 (62.5µm – Orange): ~220m to 275m max reach.
• OM2 (50µm – Orange): 550m reach.
• OM3 (50µm – Aqua): 550m reach (optimized for laser).
• OM4 (50µm – Violet): 550m+ reach.

FAQ (Technical & Product Questions)

1. What is the difference between SFP-1G-SX and SFP-1G-LX?

SX (Short Wavelength) uses 850nm lasers and Multimode fiber for short distances (up to 550m). LX (Long Wavelength) uses 1310nm lasers and Single Mode fiber for long distances (up to 10km or 20km). They are not compatible with each other.

2. Will this work in a 10G SFP+ slot?

It depends on the switch. Many SFP+ ports are backward compatible and can run at 1G speeds if a 1G SFP is inserted. However, you often have to manually set the port speed to 1000Mbps in the switch configuration. Some switches (like certain Nexus models) do not support 1G modules in 10G ports.

3. What does “DDM” mean in the product title?

DDM stands for Digital Diagnostic Monitoring (also known as DOM). It is a feature that allows the switch to read real-time data from the transceiver, such as the temperature, voltage, and optical signal strength (Tx/Rx power). This is crucial for troubleshooting fiber links.

4. Can I use this with a single strand of fiber?

No, this is a standard duplex transceiver. It requires two strands of fiber: one for transmitting (Tx) and one for receiving (Rx). If you need a single-strand solution, you need a BiDi (Bidirectional) SFP.