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PartsTable / TRANSCEIVER / 91957818
91957818 ✓ Verified by PartsTable
— · TRANSCEIVER · SFP_1G
WHAT YOU NEED TO KNOW
Transceivers — match specs to PN exactly. Clarify what the customer wants: OEM compatible or actual manufacturer, new or refurbished. Get serial numbers from the vendor before buying and validate with the manufacturer before purchase. We ship tested and validated. Key checks: Clarify OEM vs compatible. Get serial numbers BEFORE buying. Validate serials with manufacturer BEFORE purchase.
Some have holograms and serial number validation
PRODUCT OVERVIEW

Cisco 1000BASE-SX SFP Transceiver Module. Key specifications include Connector: Duplex LC, Data Rate: 1 Gbps, Fiber Type: Multimode (MMF), Wavelength: 850 nm, DOM Support: Yes, Form Factor: SFP. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 7025-01-620-5469, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
TRANSCEIVER→ SFP_1G→ 91957818
NSN: 7025-01-620-5469
FSC: 7025
CAGE: F6481 — THALES SA (FRA)
SPECIFICATIONS
ConnectorDuplex LC
Data Rate1 Gbps
Fiber TypeMultimode (MMF)
Wavelength850 nm
DOM SupportYes
Form FactorSFP
Max Distance550 m (depending on fiber type)
NSN7025-01-620-5469
COMPONENT DIAGRAM
BAIL LATCH 10G SFP+ 850nm · SR (MMF, 300m) DOM: Digital Optical Monitoring TX RX LC DUPLEX 20-PIN EDGE CONNECTOR ~56.5 mm ~13.4mm SFP+ TRANSCEIVER | 10G | 850nm | SR (MMF, 300m) Hot-swappable | LC duplex fiber | DDM/DOM supported TITLE SFP+ XCVR PN 91957818 MFR OEM Cisco 1000BASE-SX SFP Transceiver Module
TYPICAL APPLICATIONS
  • Data center switch-to-switch interconnects
  • Server-to-storage fabric connectivity
  • Long-distance fiber optic links
  • High-speed uplink connections (10G/25G/40G/100G)
VERIFIED SUBSTITUTES & CROSS-REFERENCES 12
GLC-SX-MMD=Upgraded Successor
CISCO 1000BASE-SX SFP transceiver module, MMF, 850nm, DOM
successor
GLC-SX-MMUpgraded Successor
Cisco 1000BASE Sx Fibre SFP Module
successor
146-0214/13Upgraded Successor
successor cross-reference
successor
GLCSXMMDSTInterchangeable
interchangeable cross-reference
interchangeable
GLC-SX-MMDInterchangeable
CISCO 1000BASE-SX SFP transceiver module, MMF, 850nm, DOM
interchangeable
685-924-032Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99ESD SensitiveNot HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 91957818?
91957818 is a Cisco 1000BASE-SX SFP Transceiver Module. It is classified as a TRANSCEIVER (SFP_1G).
What parts can replace 91957818?
There are 12 known substitutes for 91957818: GLC-SX-MMD=, GLC-SX-MM, 146-0214/13 and 9 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 91957818?
91957818 is cataloged in the Federal Logistics Information System (FLIS) under NSN 7025-01-620-5469. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026