GB40SM SFP Module | 1000Base, 1550nm, LC, SM, 40km

1000Base SFP Module for 40km Singlemode Fiber

The VERSITRON GB40SM is a long-distance 1000Base SFP module designed to provide reliable Gigabit Ethernet transmission over singlemode fiber. With a maximum rated distance of 40 kilometers, it provides an extended-reach fiber connectivity option for network infrastructure that extends beyond standard short-distance Gigabit applications.

Operating at 1550nm, the GB40SM uses an LC fiber connector and is designed for integration with compatible SFP-enabled networking equipment. Its 40km fiber reach makes it well suited for network backbones, telecommunications infrastructure, campus networks, enterprise facilities, and remote network connections.

According to the VERSITRON Fiber Optic SFP Modules datasheet, the GB40SM operates at 1000Mbps over singlemode fiber for distances up to 40km, 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 40km

The GB40SM allows network designers to extend Gigabit Ethernet connectivity beyond the distance limitations of copper Ethernet by using singlemode fiber.

A 40km Gigabit SFP can be used to connect:

• Network buildings
• Campus facilities
• Remote communications sites
• Telecommunications locations
• Enterprise network facilities
• Fiber network aggregation points
• Long-distance Ethernet backbone connections

Using a compatible SFP module also allows network administrators to select the appropriate fiber interface based on the required transmission distance, fiber type, wavelength, and network speed.

1550nm Singlemode Fiber Technology

The GB40SM operates at 1550nm over singlemode fiber, providing an extended-reach option for Gigabit Ethernet networks.

Its 40km transmission capability makes the GB40SM particularly useful when a standard short-range SFP does not provide enough fiber distance, but a higher-distance 70km or 100km module is unnecessary.

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

GB40SM Technical Specifications

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

Industry-Standard SFP Design

The GB40SM 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

Extend Gigabit Ethernet between network locations separated by distances of up to 40km using singlemode fiber.

Provide long-distance Gigabit fiber connectivity between telecommunications facilities and network infrastructure.

Connect buildings and remote facilities where copper Ethernet cannot provide the required distance.

Support fiber connections between network aggregation points, facilities, and remote locations.

Add Gigabit fiber connectivity to compatible SFP-enabled switches, media converters, and other networking equipment.

Extend Ethernet connectivity to remote locations using singlemode fiber infrastructure.

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 GB40SM operates at 1000Mbps.
• Fiber type: The GB40SM is designed for singlemode fiber.
• Wavelength: The module operates at 1550nm.
• Transmission distance: The GB40SM is rated for distances up to 40km.
• 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 40km Gigabit Ethernet connection over singlemode fiber, the GB40SM provides a straightforward long-distance SFP solution within the VERSITRON product family.

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.