GB20SM SFP Module | 1000Base, 1310nm, LC, SM, 20km

1000Base SFP Module for 20km Singlemode Fiber

The VERSITRON GB20SM is a 1000Base SFP module designed to provide dependable Gigabit Ethernet transmission over singlemode fiber. With a maximum rated distance of 20 kilometers, it provides an extended-reach fiber connectivity solution for networks that need to connect locations beyond the limitations of standard copper Ethernet.

Operating at 1310nm, the GB20SM uses an LC fiber connector and is designed for use with compatible SFP-enabled networking equipment. Its 20km transmission capability makes it well suited for enterprise networks, campus networks, telecommunications infrastructure, building-to-building connections, and remote network locations.

According to the VERSITRON Fiber Optic SFP Modules datasheet, the GB20SM operates at 1000Mbps over singlemode fiber for distances up to 20km, with a transmit power range of -4 to +1, receive sensitivity below -24, and an operating temperature range of 0°C to 70°C.

Extend Gigabit Ethernet Up to 20km

The GB20SM allows network designers to extend Gigabit Ethernet connectivity over singlemode fiber while maintaining a modular SFP-based network architecture.

A 20km Gigabit SFP can be used to connect:

• Separate buildings on a campus
• Remote network facilities
• Enterprise network locations
• Fiber aggregation points
• Telecommunications infrastructure
• Security and surveillance networks
• Long-distance Ethernet backbone connections

Using an SFP-based solution also allows network administrators to select fiber modules based on the required network speed, fiber type, wavelength, connector, and transmission distance.

1310nm Singlemode Fiber Technology

The GB20SM operates at 1310nm over singlemode fiber, providing a practical long-distance option for Gigabit Ethernet networks.

Its 20km fiber reach makes the GB20SM an appropriate choice when a standard multimode SFP does not provide sufficient distance, while a higher-distance 40km, 70km, or 100km module may not be necessary.

VERSITRON's Gigabit SFP product family includes singlemode modules for 20km, 40km, 70km, and 100km applications, as well as bidirectional singlemode options for specialized fiber links.

GB20SM Technical Specifications

These specifications are based on the VERSITRON Fiber Optic SFP Modules datasheet.

Industry-Standard SFP Design

The GB20SM uses an industry-standard Small Form Pluggable (SFP) form factor, providing a modular approach to adding fiber connectivity to compatible network equipment.

VERSITRON SFP modules feature:

• Industry-standard SFP design
• LC fiber connectors
• Differential LVPECL inputs and outputs
• 3.3V single power supply
• TTL signal detect indicator
• Hot-pluggable installation
• Class 1 laser compliant with EN 60825-1

This modular design allows network administrators to select an SFP according to the required network speed, fiber type, wavelength, connector, and transmission distance.

Typical Applications

Connect separate buildings using singlemode fiber while extending Gigabit Ethernet connectivity up to 20km.

Provide fiber connectivity between campus buildings, network closets, and centralized network infrastructure.

Extend Gigabit Ethernet between network locations where copper cabling cannot provide the required reach.

Support Gigabit fiber connections between telecommunications and network facilities.

Provide long-distance fiber connectivity for network infrastructure supporting IP-based security and surveillance systems.

Extend Ethernet connectivity to remote locations using singlemode fiber.

How to Select the Right Gigabit SFP

Selecting the correct SFP requires matching the module to both the networking equipment and the installed fiber infrastructure.

Consider:

• Data rate: The GB20SM operates at 1000Mbps.
• Fiber type: The GB20SM is designed for singlemode fiber.
• Wavelength: The module operates at 1310nm.
• Transmission distance: The GB20SM is rated for distances up to 20km.
• Connector: The module uses an LC fiber connector.
• Equipment compatibility: Confirm that the connected switch, media converter, or other networking equipment supports the required SFP specification.

For applications requiring a 20km Gigabit Ethernet connection over singlemode fiber, the GB20SM provides a straightforward long-distance SFP solution.

Why Choose VERSITRON?

VERSITRON provides fiber optic networking products designed for reliable communication across commercial, industrial, government, military, transportation, telecommunications, and infrastructure applications.

Our SFP portfolio includes 100Mbps, 1000Mbps, and 10Gbps modules, with multimode and singlemode options covering a wide range of transmission distances. VERSITRON also offers CWDM, DWDM, and DDM modules for specialized fiber networking requirements.

VERSITRON — Safeguarding Communications Since 1958

Since 1958, VERSITRON has provided fiber optic communication and networking solutions for applications where dependable connectivity matters. Our product experience includes fiber optic media converters, network switches, SFP modules, and other communication equipment designed to support reliable network infrastructure.

Need help selecting a 1000Base SFP module? Contact VERSITRON for assistance selecting the right fiber type, wavelength, transmission distance, and compatible module for your network.