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Small rectangular SFP transceiver with silver metal body and black LC connector port

AddOn

AddOn GLC-LH-SMD-20-AO SFP transceiver 1310nm 20km

SKU CH-J59T-64Y6S MPN GLC-LH-SMD-20-AO

A 1‑Gigabit SFP transceiver for single‑mode fibre at 1310 nm with a 20 km reach and LC connector

  • Compatible BrandCisco
  • Device TypeTransceiver
  • Form FactorSFP
  • FeatureCompatible OEM: Cisco Compatible With OEM Part Number(s): GL
  • Transmits data up to 20km over single-mode fibre
  • Operates at 1310nm wavelength for long-range links
  • Delivers 1-Gigabit LX speed for enterprise networks
  • LC connector ensures secure duplex connection
  • Digital optical monitoring provides real-time link diagnostics

Cisco-compatible 1G SFP for single-mode fibre

The AddOn GLC-LH-SMD-20-AO is a small form-factor pluggable transceiver built for 1000Base-LX links over single-mode fibre. It operates at 1310nm and reaches 20km with an LC duplex connector. The module includes digital optical monitoring and is TAA compliant for regulated procurements.

Replaces Cisco GLC-LH-SM in existing LX links

This transceiver directly substitutes the Cisco GLC-LH-SM and GLC-LH-SM= part numbers in switches and routers that accept standard SFP modules. The upgrade is worthwhile when a compatible module is needed at lower cost or to meet TAA requirements without changing cabling or switch configuration.

Handles 1G campus and metro spans up to 20km

The 1310nm LX optics comfortably serve building-to-building and campus backbone runs within the rated 20km reach. Digital optical monitoring provides real-time power and temperature data from 0 to 70°C. The module does not support multi-mode fibre, higher speeds or longer distances beyond the 20km single-mode specification.

Highlights

  • Transmits data up to 20km over single-mode fibre
  • Operates at 1310nm wavelength for long-range links
  • Delivers 1-Gigabit LX speed for enterprise networks
  • LC connector ensures secure duplex connection
  • Digital optical monitoring provides real-time link diagnostics

Specifications

BrandAddOn
ModelGLC-LH-SM
Part NumberGLC-LH-SMD-20-AO
Compatible BrandCisco
Device TypeTransceiver
Form FactorSFP
FeatureCompatible OEM: Cisco
Compatible With OEM Part Number(s): GLC-LH-SM, GLC-LH-SM=
Connector: LC
DOM: DOM
Form Type: SFP
Media: SMF
Reach: 20km
Speed: 1000Base
Speed Description: 1-Gigabit
Transceiver Type: LX
Wavelength: 1310nm
Environment: 0 to 70°C
Shipping weight0.02 kg
Package size117 × 48 × 20 mm

Questions about this item

Will the LC duplex connector on this SFP fit my single-mode patch cables and the switch port?

Yes, the transceiver uses a standard LC duplex interface that mates with any single-mode LC patch cord and any SFP cage accepting 1000Base-LX optics.

What is the correct insertion procedure so the transceiver locks into the SFP cage?

Remove the dust plugs, align the module with the cage label side up, push firmly until the latch clicks, then connect the LC cables.

How often should I clean the LC interfaces on this 1310nm module?

Inspect and clean both connector end-faces with a fibre scope and lint-free wipes before every mating and whenever signal loss increases.

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