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Small rectangular SFP transceiver module with metal housing and LC duplex port visible

STARTECH

STARTECH EXSFP1GELXST SFP transceiver 1000BASE-LX 10 km 1310 nm

SKU CH-GSM9-4H9PS MPN EXSFP1GELXST

A 1.25 Gbps SFP transceiver delivering 1000BASE-LX connectivity over single-mode fibre up to 10 km at 1310 nm

  • Device TypeTransceiver
  • StandardsIEEE 802.3z 1000BASE-LX
  • Wavelength1310nm
  • Fiber CableSingle Mode
  • ProtocolsTCP/IP
  • Ports1 - Fiber Optic LC Duplex Female
  • 100% Juniper EX-SFP-1GE-LX compatible for dependable 1GbE connectivity
  • 1000BASE-LX standard delivers 1.25 Gbps over single-mode fibre up to 10 km
  • Hot-swappable with DDM support reporting status to SNMP network management tools
  • Operates from 0°C to 70°C with storage tolerance down to -40°C
  • Lifetime warranty on the module without voiding OEM switch warranty

Juniper Compatible SFP Transceiver

The StarTech.com EXSFP1GELXST is a hot-swappable SFP module built for 1000BASE-LX Gigabit Ethernet links. It targets network engineers and system integrators who need a drop-in replacement for the Juniper EX-SFP-1GE-LX in switches and routers. The transceiver also functions in MSA-compliant equipment from other vendors that accept uncoded modules.

LC Duplex Single Mode Build

A single LC duplex female receptacle connects to standard single mode fibre patch cords. The housing meets the SFP multi-source agreement form factor, so installation and removal require no tools and cause no service interruption. Digital Diagnostic Monitoring reports real time status to SNMP management tools, simplifying link troubleshooting and inventory audits.

0 to 70 Celsius Operating Range

The module operates from 0 to 70 degrees Celsius and survives storage from minus 40 to 85 degrees Celsius at 5 to 95 percent relative humidity. Power draw stays within the SFP MSA envelope, so no extra cooling or power budget changes are needed. DDM telemetry lets administrators watch temperature and voltage trends before they affect link stability.

Highlights

  • 100% Juniper EX-SFP-1GE-LX compatible for dependable 1GbE connectivity
  • 1000BASE-LX standard delivers 1.25 Gbps over single-mode fibre up to 10 km
  • Hot-swappable with DDM support reporting status to SNMP network management tools
  • Operates from 0°C to 70°C with storage tolerance down to -40°C
  • Lifetime warranty on the module without voiding OEM switch warranty

Specifications

BrandStarTech.com
ModelEXSFP1GELXST
Device TypeTransceiver
StandardsIEEE 802.3z 1000BASE-LX
Wavelength1310nm
Fiber CableSingle Mode
ProtocolsTCP/IP
Ports1 - Fiber Optic LC Duplex Female
Max Distance10 km (6.2 mi)
Transfer Rate1.25 Gbps
TemperatureOperating Temperature: 0 degree C to 70 degree C (32 degree F to 158 degree F)
Storage Temperature: -40 degree C to 85 degree C (-40 degree F to 185 degree F)
Humidity5~95% RH
FeatureDelivers reliable Gigabit Ethernet connections for 1000Base-LX compliant networks
100% Juniper Networks compatible SFP, equivalent to Juniper EX-SFP-1GE-LX
Backed by lifetime warranty and free lifetime technical support
Meets or exceeds OEM specifications and MSA (Multi-Source Agreement) industry standards
Supports Digital Diagnostics Monitoring (DDM / DOM)
1310 nm optical wavelength
Supports single-mode fiber (maximum distance 10 km / 6.2 mi.)
LC fiber connector
Maximum data rates up to 1.25Gbps
Hot-pluggable
Package Contents1 - SFP transceiver
Shipping weight0.05 kg
Package size120 × 90 × 30 mm

Questions about this item

What distance does the 1000BASE-LX standard on this module actually reach?

The EXSFP1GELXST is rated for 10 km (6.2 mi) over single-mode fibre at 1310 nm, matching the IEEE 802.3z 1000BASE-LX reach specification.

What connector and fibre type must I have to plug this transceiver in?

It uses an LC duplex female port and requires single-mode fibre (SMF) patch cables with LC connectors on both ends.

How do I install the module in a Juniper switch, and what step is often missed?

Insert the hot-swappable SFP into an open slot until it clicks, then connect the LC cables; the step often missed is enabling Digital Diagnostic Monitoring in the switch OS so the DDM data (temperature, voltage, optical power) is reported to SNMP tools.

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