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Small rectangular SFP transceiver module with silver metal casing and black LC port visible

Transition Networks

Transition Networks TN-GLC-LH-SM SFP transceiver 1310nm 1.25 Gbps LC

SKU CH-1ARH-W4G05

Single-mode fibre SFP transceiver for 1.25 Gbps links at 1310 nm with LC connector and IEC-60825 Class 1 laser safety

  • Device TypeTransceiver
  • Network MediaSingle-mode Fiber 1000Base-LX
  • Wavelength1310nm
  • Ports1 x LC 1000Base-LX
  • Transfer Rate1.25 Gbps
  • FeatureClass 1 Laser International Safety Standard IEC-60825 Compli
  • 25 Gbps transfer rate for Gigabit Ethernet links
  • 1310 nm wavelength on single-mode fiber
  • LC duplex connector for standard patch cords
  • Class 1 laser meeting IEC 60825 safety standard
  • SFP MSA form factor fits compliant slots

SFP Transceiver for Single-Mode Fibre

The Transition Networks TN-GLC-LH-SM is a Small Form Factor Pluggable module built for Gigabit Ethernet or Fibre Channel links over single-mode fibre. It suits network engineers extending campus or metro connections where copper reach is insufficient.

1310 nm Wavelength and LC Connector

This transceiver operates at a 1310 nm wavelength with a single LC 1000Base-LX port, delivering a 1.25 Gbps transfer rate. The specific wavelength and connector type determine link compatibility and must match the opposing endpoint exactly.

Class 1 Laser Safety Under Continuous Operation

The module complies with IEC 60825 Class 1 laser safety standards, meaning the optical output remains safe for direct exposure during sustained, long-haul transmission. MSA compliance ensures consistent mechanical and electrical behaviour across compliant switch and router slots.

Highlights

  • 25 Gbps transfer rate for Gigabit Ethernet links
  • 1310 nm wavelength on single-mode fiber
  • LC duplex connector for standard patch cords
  • Class 1 laser meeting IEC 60825 safety standard
  • SFP MSA form factor fits compliant slots

Specifications

BrandTRANSITION
ModelTN-GLC-LH-SM
Device TypeTransceiver
Network MediaSingle-mode Fiber 1000Base-LX
Wavelength1310nm
Ports1 x LC 1000Base-LX
Transfer Rate1.25 Gbps
FeatureClass 1 Laser International Safety Standard IEC-60825 Compliant
Compatible with Small Form Factor Pluggable Multi-Sourcing Agreement (MSA)
Dimensions2.18" x 0.52" x 0.33"
Weight0.1
Shipping weight0.45 kg
Package size152 × 89 × 41 mm

Questions about this item

What does the 1.25 Gbps transfer rate mean for actual throughput in a Gigabit Ethernet link?

The 1.25 Gbps line rate matches the Gigabit Ethernet physical layer, so the module will sustain full wire-speed traffic across the single-mode fibre link.

Which MSA standard does the SFP follow and what does that guarantee for host compatibility?

The transceiver complies with the SFP Multi-Sourcing Agreement, ensuring mechanical and electrical fit in any standard SFP cage that accepts 1000Base-LX optics.

What are the exact dimensions I need to check against my switch port spacing?

The module measures 2.18" x 0.52" x 0.33", the standard SFP footprint that fits side-by-side in typical switch cages.

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