GLC-SX-MM Cisco Compatible 1G 550M MMF SFP module

Cisco
SFP
1.25G
Duplex
550 m
GLC-SX-MM Cisco Compatible 1G 550M MMF SFP module

Cisco compatible GLC-SX-MM - Key Features

  • Compatibility: Cisco
  • Media Type: Multi-Mode Fiber (MMF)
  • Fiber Count: Duplex
  • Connector: Double LC/UPC
  • Maximum Distance: 550 m
  • Guaranteed Link Budget: 7.5 dB
  • Tx Wavelenght: 850 nm
  • Supported Data Rate: 1.063 Gbps - 1.25 Gbps
  • DDM/DOM: Supported
  • Temperature Range: Standard 0°-70°C

Cisco GLC-SX-MM Price

SKUSKU:1.25G-SFP-550D-CI
Lead timeIn Stock - Ships Next Business Day
Standard recommended retail price ex VAT:
5.14
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Cisco compatible GLC-SX-MM Specifications

Form Factor
SFP
Media Type
Multi-Mode Fiber (MMF)
Fiber Count
Duplex
Connector
Double LC/UPC
Maximum Distance
550 m
Guaranteed Link Budget
7.5 dB
TX Wavelength
850 nm
RX Wavelength
850 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
20 nm (840-860 nm)
Rx Wavelength Bandwidth
20 nm (840-860 nm)
Minimum Transmitting Power
-9.5 dBm
Maximum Transmitting Power
3 dBm
Receiver Sensitivity
-17 dBm
Receiver Overload
-3 dBm
Dispersion
110 ps/nm ps/nm
Transmitter Type
VSCEL 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-SX-MM Datasheet

v3

Complete technical specifications and product details

Updated:Jan 16, 2026Format:PDF

Cisco compatible GLC-SX-MM Description

Our compatible Cisco GLC-SX-MM (1000Base-SX SFP, 30-1301-02) price and datasheet are based on our product 1.25G-SFP-550D which supports standard 1000BASE-SX application and is SFP (Small Form-factor Pluggable) Transceiver, operating over Double Fiber Multi-Mode Fiber (MMF) optical cable. This transceiver is often referred to as Cisco 1000Base-SX GBIC, but its oldest form factor – correct is SFP. It has a minimum guaranteed optical budget of 7.5 dB, with in most cases GLC-SX-MM distance being enough to reach about 550 m distance over multi-mode fiber. However, GLC-SX-MM distance is just an indicative parameter calculated for the comfort of identification. Eventually, we calculate distance taking in account the minimal optical budget and average attenuation of optical cabling in the industry. This transceiver uses top quality VSCEL Laser transmitter operating at nominal wavelengths 850 nm. and 850 nm. PIN Photodiode receiver. It supports DDM/DOM optical diagnostics, with providing diagnostic information about the present operating conditions. Based on Cisco GLC-SX-MM specs SFP operates in the Standard 0°-70°C temperature range and has a Double LC interface. GLC-SX-MM speed is 1.25Gbps and it supports such applications as Gigabit Ethernet (1.25 Gbps). SFP Double Fiber optical transceiver is a multi-purpose module used in a number of different places of today’s networking. Consequently, the most popular applications are Internet Service Provider (ISP) Gigabit Ethernet communication links, Enterprise LAN & SAN Networks, Data Center LAN & SAN Networks, and other optical links. For detailed compatible GLC-SX-MM specs please refer to the Cisco GLC-SX-MM datasheet, which is based on our product 1.25G-SFP-550D.

Compatible Cisco GLC-SX-MM (1000Base-SX SFP, 30-1301-02) is CE/RoHS certified and it is Compliant with product safety standards. We perform compatibility tests for Compatible Cisco 1000Base-SX SFP transceiver module MMF 850nm DOM 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 the 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 the 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 questions on the Cisco GLC-SX-MM datasheet, specs or price don't hesitate to Contact Us!