GLC-EX-SM Cisco Compatible 1G 40KM SMF SFP Transceiver

Cisco
SFP
1.25G
Duplex
40 km
GLC-EX-SM Cisco Compatible 1G 40KM SMF SFP Transceiver

Cisco compatible GLC-EX-SM - Key Features

  • Compatibility: Cisco
  • Media Type: Single-Mode Fiber (SMF)
  • Fiber Count: Duplex
  • Connector: Double LC/UPC
  • Maximum Distance: 40 km
  • Guaranteed Link Budget: 19 dB
  • Tx Wavelenght: 1310 nm
  • Supported Data Rate: 1.063 Gbps - 1.25 Gbps
  • DDM/DOM: Supported
  • Temperature Range: Standard 0°-70°C

Cisco GLC-EX-SM Price

SKUSKU:1.25G-SFP-41D-CI
Lead timeMade to Order - 2 Weeks
Standard recommended retail price ex VAT:
6.43
Choice of 0+
Telecoms & Integrators Globally

Cisco compatible GLC-EX-SM Specifications

Form Factor
SFP
Media Type
Single-Mode Fiber (SMF)
Fiber Count
Duplex
Connector
Double LC/UPC
Maximum Distance
40 km
Guaranteed Link Budget
19 dB
TX Wavelength
1310 nm
RX Wavelength
1310 nm
Supported Data Rate
1.063 Gbps - 1.25 Gbps
Supportet Ethernet Applications
Gigabit Ethernet (1.25 Gbps)
Supported Fiber Channel Applications
1G Fiber Channel (1.0625 Gbps)
DDM/DOM
Supported
Tx Wavelength Bandwidth
100 nm (1260-1360 nm)
Rx Wavelength Bandwidth
100 nm (1260-1360 nm)
Minimum Transmitting Power
-5 dBm
Maximum Transmitting Power
0 dBm
Receiver Sensitivity
-24 dBm
Receiver Overload
-3 dBm
Dispersion
300-400 ps/nm ps/nm
Transmitter Type
DFB Laser
Receiver Type
PIN photodiode
Temperature Range
Standard 0°-70°C
Power
+3.3V single power supply
Compliance
CE, Class 1 FDA and IEC60825-1 Laser Safety Compliant, INF-8074i, RoHS, SFP MSA

Cisco compatible GLC-EX-SM Datasheet

v2

Complete technical specifications and product details

Updated:Jan 16, 2026Format:PDF

Cisco compatible GLC-EX-SM Description

Our Compatible Cisco 1G SFP datasheet product is based on our product 1.25G-SFP-41D, which has the same specifications and is manufactured in accordance with the same industry standards. The Cisco compatible GLC-EX-SM module is intended for use with Double Fiber Single-Mode Fiber (MMF) optical cable. It has a minimum guaranteed optical budget of 17 dB, which is usually enough to reach up to 40 km distance as per Cisco GLC EX SM specs. However, distance is only an indicative parameter calculated for identification comfort. Finally, we calculate distance while keeping in mind the minimum optical budget and the average attenuation of optical cabling in industry. Our Cisco GLC-EX-SM compatible module version uses a high-quality DFB Laser transmitter with a nominal wavelength of 1310 nm and a 1310 nm PIN Photodiode receiver. DDM/DOM optical diagnostics are supported by this module, which provides diagnostic information about the current operating conditions. Digital diagnostics functions are available via a 2-wire serial interface, as specified in SFF-8472. The compatible Cisco GLC EX SM distance of 40km module has a Double LC interface and operates in the standard 0°-70°C temperature range. This SFP+ module supports data rates ranging from 1.063 to 1.25 Gbps and applications such as Gigabit Ethernet (1.25 Gbps). Our GLC EX SM Cisco compatibility module is a multi-purpose module that can be used in a variety of networking applications. Consequently, most popular applications are Internet Service Provider, Fiber to The Home routing and switching equipment with GLC-EX-SM Cisco compatible interfaces, Mobile Operator Core and Backhaul applications, Data Center networking for Ethernet connections and other optical fiber links. Our Cisco compatible GLC EX SM distance of 40km transceiver has proven to be reliable in temperature-controlled server rooms over a long period of time GLC EX SM compatibility transceivers do not require any maintenance while in use. The only possible maintenance requirement could occur during cable replacement, when the transceiver connector must be thoroughly cleaned of dust using special optical connector cleaning tools. Therefore ensuring the best connection possible - leading to best performance! Our Compatible Cisco 1G SFP price & datasheet transceivers are based on our product 1.25G-SFP-41D, which is CE/RoHS certified and fulfills product safety standards. We perform compatibility tests for Cisco compatible GLC-EX-SM SFP+ Module with the most recent Cisco networking equipment platforms, allowing us to encode transceiver EEPROM memory to be compatible with and work seamlessly with Cisco platforms. Furthermore, our optical transceivers comply with the SFP+ Multi Source Agreement industry standard and Cisco 1G SFP compatibility matrix. Because we are committed to providing high-quality service, we conduct rigorous quality checks before delivering our products. As a result, we perform optical parameter measurements, connector cleanness tests, and EEPROM memory data validation tests on SFP+ transceivers. Please contact us if you require any additional information.