GLC-LH-SM Cisco Compatible 1G 10KM SMF SFP Transceiver

# Key Highlights
  • Form Factor: SFP
  • Compatibility: Cisco 1000BASE-LX/LH SFP compatible
  • Tx/Rx Wavelength: 1310 nm. / 1310 nm.
  • Media Type: Single-Mode Fiber (SMF)
  • Cable Type: Duplex Fiber
  • Optical Budget: 13 dB
  • Max. Distance: 10 km
  • Data Rate: 1.063-1.25Gbps
  • Temperature:Standard 0°-70°C
# Pricing & Ordering
SKU: 1.25G-SFP-10D-CI


Standard recommended retail price without VAT.

Lead Time: Below 1 Week in EU Countries
# Quality Assurance

Because of our comprehensive Testing Program, we are confident on quality of our products. Such approach empower us to cover all our products with:

# Key Technical Data
Media Type:

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Minimum Optical Budget:

Maximum Distance:

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Supported Applications:



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# Product Documentation
Cisco Compatible GLC-LH-SM Datasheet

Cisco Compatible GLC-LH-SM SFP Module is based on our product 1.25G-SFP-10D. When You will order it will be encoded to be compatible with Cisco equipment and it will be labeled with part number: 1.25G-SFP-10D-CI, where CI means Cisco Compatible. Above You can download datasheet of our 1.25G-SFP-10D product.

# Product Description

Our compatible Cisco GLC-LH-SM 1000Base LX LH SFP transceiver module is SFP (Small Form factor Pluggable) form factor, operating over Double Fiber Single-Mode Fiber (SMF) optical cable. It has minimum guaranteed optical budget of 13 dB, with in most cases is enough to reach about 10 km distance. However, distance is just indicative parameter calculated for comfort of identification. Eventually we calculate distance taking in account minimal optical budget and average attenuation of optical cabling in industry. This transceiver use top quality FP Laser transmitter with operating at nominal wavelength 1310 nm. and 1310 nm. PIN Photodiode receiver. It support DDM/DOM optical diagnostics, with provide diagnostic information about the present operating conditions. Cisco compatible GLC-LH-SM operates in Standard 0°-70°C temperature range and has Double LC interface. SFP support 1.063-1.25Gbps data rate and such applications as Gigabit Ethernet (1.25 Gbps)|1G Fiber Channel (1.0625 Gbps). SFP Double Fiber optical transceiver is multi-purpose module used in number of different places of today’s networking. Consequently, most popular applications are Internet Service Provider (ISP) Gigabit Ethernet communication links, Enterprice LAN & SAN Networks, Data Center LAN & SAN Networks and other optical links.

    Our compatible Cisco GLC-LH-SM 1000Base LX LH SFP transceiver module is CE/RoHS certified and it is Compliant with product safety standards. We perform compatibility tests for Cisco-compatible GLC-LH-SM SFP Transceiver with the latest platforms of Cisco networking equipment, which allows us to encode transceiver EEPROM memory to be compatible and work seamlessly with Cisco platforms. However, our optical transceivers are compliant to SFP Multi-Source Agreement INF-8074i industry standard as well. Because our focus is providing top-quality service, we are performing serious quality checks before delivery of our products. As a result, we do optical parameter measurements, connector cleanness tests, and SFP transceiver EEPROM memory data validation tests. If You have any other questions, please do not hesitate to contact Us!



Cisco compatibility matrix states that Cisco GLC-LH-SM is End Of Sale/Life, however, our compatible version is available and for now.

Where can I find Cisco GLC-LH-SM datasheet pdf?

For Cisco GLC-LH-SM Datasheet you should refer to Cisco website, Cisco SFP Modules section, however feel free to check our compatible GLC-LH-SM datasheet pdf as well.

What is Cisco GLC-LH-SM price?

For origional Cisco GLC-LH-SM please refer to Cisco Global Price List, however our compatible product price is 5.46 EUR.

Where can I find the Cisco GLC-LH-SM Compatibility matrix?

Cisco Compatibility matrix can be found Here, however, if You have any questions about our item’s compatibility, please do not hesitate to contact Us!

What is GLC-LH-SM weight?

GLC-LH-SM is SFP form factor optical transceiver and it’s weight is 22 grams.

What are main Cisco GLC-LH-SM specifications?

1000BASE-LX/LH long-wavelength (1310nm) Single Mode Fiber module, without DOM function.

What is GLC-LH-SM?

The GLC-LH-SM Small Form-Factor Pluggable SMF Transceiver without DOM from Cisco. It is a Gigabit interface converter that links your switches and routers to the network.

Will GLC-LH-SM work 100base speed?

By theory, The GLC-LH-SMD is a 1 Gbps transceiver and the speed is fixed at 1 Gbps only. However, our compatible version can work as multi-rate in 100Base speed.

Is GLC-LH-SM single mode or multimode?

GLC-LH-SM is 1000BASE-LX optical module uses 1310nm wavelength laser and is designed for use with singlemode fiber only.

What is Cisco GLC-LH-SM distance?

The maximum reach of this module is 10 km.

Is Cisco GLC-LH-SM-20 available?

The original Cisco 20 km option is not available, however our compatible items are available for distances for 20 km and up.