Cisco SFP-25G-SR-S Compatible 25GBASE-SR SFP28 Transceiver
Cisco compatible SFP-25G-SR-S - Key Features
- Compatibility: Cisco
- Media Type: Multi-Mode Fiber (MMF) -OM3/OM4/OM5
- Fiber Count: Duplex
- Connector: Double LC/UPC
- Maximum Distance: 100 m
- Average Link Budget: 5.3 dB
- Tx Wavelength: 850 nm
- Supported Data Rate: 8.5 Gbps - 25.78 Gbps
- DDM/DOM: Supported
- Forward Error Correction (FEC): Host FEC Supported
- Temperature Range: Standard 0°-70°C
Cisco SFP-25G-SR-S Price
In Stock - Ships Next Business DayCisco compatible SFP-25G-SR-S Specifications
Form Factor | SFP28 |
Media Type | Multi-Mode Fiber (MMF) -OM3/OM4/OM5 |
Fiber Count | Duplex |
Connector | Double LC/UPC |
Maximum Distance | 100 m |
Average Link Budget | 5.3 dB |
TX Wavelength | 850 nm |
RX Wavelength | 850 nm |
Supported Data Rate | 8.5 Gbps - 25.78 Gbps |
Supported Ethernet Applications | 10G Ethernet (10.31Gbps), 25G Ethernet (25.78Gbps) |
DDM/DOM | Supported |
Forward Error Correction (FEC) | Host FEC Supported |
Transmitter Type | VSCEL Laser |
Average Launch Power (Min) Each Lane | -5 dBm |
Average Launch Power (Max) Each Lane | 2.4 dBm |
Extinction Ratio (Min) | 3 dB |
Receiver Type | PIN photodiode |
Rx Wavelength Bandwidth | 20 nm |
Average Receiver Sensitivity (Min) Each Lane | -10.3 dBm |
Average Receiver Sensitivity (Max) Each Lane | 2.4 dBm |
Receiver Overload | 2.4 dBm |
Temperature Range | Standard 0°-70°C |
Storage Temperature | -40° to 85°C |
Relative Humidity | 5 to 85% |
Power Consumption (Max) | 0.3 W |
Power | +3.3V single power supply |
Compliance | SFF-8432, CE, Class 1 FDA and IEC60825-1 Laser Safety Compliant, RoHS, SFF-8431, SFF-8472, SFP28 MSA |
Cisco compatible SFP-25G-SR-S Datasheet
v3Complete technical specifications and product details
Cisco compatible SFP-25G-SR-S Description
EdgeOptic's SFP-25G-SR-S compatible is a Cisco-coded 25GBASE-SR SFP28 transceiver that matches the original Cisco SFP-25G-SR-S optical and electrical specification. The module is engineered for Cisco Nexus 9000 series, Cisco UCS fabric interconnects, and Catalyst 9500 platforms running 25 Gigabit Ethernet over short-reach multimode fiber.
Optical specs: 850 nm VCSEL transmitter, PIN photodiode receiver, TX power -8.4 to +2.4 dBm, RX sensitivity better than -10.3 dBm, 5.3 dB link budget. Reach is 100 m on OM4, 100 m on OM5, and 70 m on OM3 with an LC/UPC duplex connector. Data rate is 25.78 Gbps per IEEE 802.3by Clause 112, and the module requires RS-FEC via Clause 91 (RS(528,514)) on the host port. FC-FEC (Firecode) is not sufficient for SFP-25G-SR-S operation and the host side must present RS-FEC at link bring-up.
Electrical interface follows SFF-8431 and SFF-8432 for the SFP28 cage. Digital diagnostics are SFF-8472 compliant, surfacing temperature, supply voltage, TX bias, TX power, and RX power through 'show interface transceiver detail' on NX-OS and IOS XE. Power dissipation is 0.3 W and the module operates across 0-70 C.
EEPROM is programmed with Cisco-recognized vendor identification, which means the module loads as a supported transceiver on NX-OS and IOS XE without requiring the 'service unsupported-transceiver' command. Nexus 9000, UCS, and Catalyst 9500 platforms register the module in the transceiver inventory as a legitimate SFP-25G-SR-S, and TAC-relevant show commands return clean output without third-party warnings on syslog. On NX-OS, 'show inventory' and 'show interface transceiver detail' both list the module with the Cisco vendor name, so existing Cisco compatibility-matrix automation and TAC workflows treat EdgeOptic SFP-25G-SR-S units as native parts.
The SFP-25G-SR-S is a 25G-only module, not the dual-rate SFP-10/25G-CSR-S that handles both 10G and 25G on longer OM3 runs. For Nexus 93180 ACI-mode rollouts or Catalyst 9500 compatibility-matrix questions, contact our sales team.
Frequently Asked Questions
Does the SFP-25G-SR-S require RS-FEC to be enabled on the host port?
Yes. SFP-25G-SR-S requires RS-FEC (Clause 91, RS(528,514)) on the host-side 25G port. FC-FEC (Firecode) is not sufficient to bring the link up. On Nexus 93180YC-EX in ACI mode, confirm the port FEC profile is set to RS-FEC before inserting the module, since the ACI default may present a different FEC mode for certain port profiles.
Will the Cisco SFP-25G-SR-S compatible work on Nexus 9000 without the service unsupported-transceiver command?
Yes. EdgeOptic codes Cisco compatibles with Cisco-recognized EEPROM, so NX-OS accepts the SFP-25G-SR-S as a supported transceiver at link-up and during 'show inventory' without requiring the 'service unsupported-transceiver' command. This applies across Nexus 9000, UCS, and Catalyst 9500 platforms.
Which Cisco platforms are qualified for the SFP-25G-SR-S transceiver?
Cisco has qualified SFP-25G-SR-S across Nexus 9000 series (93180YC-EX, 93180YC-FX, 9336C-FX2), UCS fabric interconnects, and Catalyst 9500 series. Refer to Cisco's Transceiver Module Compatibility Matrix for the latest per-platform and per-IOS-XE release qualification status.
What is the difference between SFP-25G-SR-S and SFP-10/25G-CSR-S?
SFP-25G-SR-S is a 25G-only SR module for 25GBASE-SR ports. SFP-10/25G-CSR-S is a dual-rate short-reach module that operates at both 10GBASE-SR and 25GBASE-SR with extended OM3 reach, making it the preferred module when a 10G-to-25G fleet migration requires a single SKU across both link speeds. The SR-S is the right choice for pure 25G deployments.