25GBASE-LR SFP28 Compatible Transceiver: 25G-SFP28-10
25GBASE-LR SFP28 Transceiver Overview
25G-SFP28-10 is a 25GBASE-LR SFP28 transceiver for 10 km long-reach connectivity over single-mode fiber at 1310 nm. It runs as a dual-rate module covering 10 Gigabit Ethernet (10.31 Gbps) and 25 Gigabit Ethernet (25.78 Gbps) per IEEE 802.3cc, with a 5 dB optical link budget, DML transmitter, PIN photodiode receiver, and LC/UPC duplex connector. Designed for campus backbone, metro aggregation, and data center long-reach uplinks. DDM diagnostics report TX/RX power, temperature, bias current, and supply voltage in real time. SFF-8431, SFF-8432, SFF-8472, and SFP28 MSA conformant.
- Media Type: Single-Mode Fiber (SMF)
- Fiber Count: Duplex
- Connector: Double LC/UPC
- Maximum Distance: 10 km
- Average Link Budget: 5 dB
- Tx Wavelength: 1310 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
25GBASE-LR Transceiver Pricing
SKU:25G-SFP28-10
In Stock - Ships Next Business Day25GBASE-LR SFP28 Compatible Transceiver Specification
Form Factor | SFP28 |
Media Type | Single-Mode Fiber (SMF) |
Fiber Count | Duplex |
Connector | Double LC/UPC |
Maximum Distance | 10 km |
Average Link Budget | 5 dB |
TX Wavelength | 1310 nm |
RX Wavelength | 1310 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 | DML Laser |
Average Launch Power (Min) Each Lane | -7 dBm |
Average Launch Power (Max) Each Lane | 2 dBm |
Extinction Ratio (Min) | 3.5 dB |
Receiver Type | PIN photodiode |
Rx Wavelength Bandwidth | 40 nm |
Average Receiver Sensitivity (Min) Each Lane | -12 dBm |
Average Receiver Sensitivity (Max) Each Lane | 2 dBm |
Receiver Overload | 3 dBm |
Temperature Range | Standard 0°-70°C |
Storage Temperature | -40° to 85°C |
Relative Humidity | 5 to 85% |
Power Consumption (Max) | 1.2 W |
Power | +3.3V single power supply |
Compliance | CE, Class 1 FDA and IEC60825-1 Laser Safety Compliant, RoHS, SFF-8431, SFF-8472, IEEE 802.3cc, SFF-8432, SFP28 MSA |
25GBASE-LR SFP28 Compatible Transceiver Datasheet
v4Complete technical specifications and product details
25GBASE-LR SFP28 Compatible Transceiver Description
The 25G-SFP28-10 is a hot-pluggable 25GBASE-LR SFP28 transceiver for long-reach connectivity over single-mode fiber at 1310 nm. The transmitter is a DML driving an LC/UPC duplex connector; the receiver is a PIN photodiode. The module operates as a dual-rate optic covering 10 Gigabit Ethernet (10.31 Gbps) and 25 Gigabit Ethernet (25.78 Gbps), per IEEE 802.3cc. Operation is specified across the standard commercial range of 0°C to 70°C on a +3.3 V single supply with 1.2 W maximum power consumption. The module conforms to IEEE 802.3cc, SFF-8431 for SFP+/SFP28 electrical, SFF-8432 for the mechanical cage, SFF-8472 for diagnostics, and the SFP28 MSA.
Reach is specified to 10 km over standard G.652 single-mode fiber within a 5 dB optical link budget. TX output power is −7 to +2 dBm and RX sensitivity is −12 dBm, with RX overload at +3 dBm and a minimum extinction ratio of 3.5 dB. Receiver wavelength bandwidth is 40 nm centered at 1310 nm. The 10 km figure is the application-typical engineering envelope: actual loss-limited reach depends on installed fiber attenuation, splice and connector loss, and the host's link margin policy. For long links above 8 km, calculate end-to-end insertion loss against the 5 dB budget rather than relying on the nominal 10 km figure.
At 25G operation, the host MAC performs RS(528,514) RS-FEC. The module itself does not implement FEC; it relies on host-side RS-FEC for error correction. Switch platforms differ in how they treat this: some auto-enable RS-FEC for 25GBASE-LR optics, others require explicit configuration of the FEC mode per interface. Mismatched FEC settings between the two ends of a 25G link cause link-down events that do not surface as optical errors, so the FEC mode on both ends must agree before commissioning. At 10G operation the module behaves as a standard 10GBASE-LR optic and host-side FEC is not required, but the host port must support dual-rate selection between 10G and 25G.
DDM diagnostics are enabled by default and report transmit power, receive power, module temperature, laser bias current, and supply voltage through the host's I2C management interface per SFF-8472. Each unit is programmed with vendor-specific EEPROM coding for compatibility with 80+ switch and router brands, so the hardware drops into existing 25G aggregation deployments without third-party-transceiver warnings on supported hosts. Typical applications include campus backbone connections, metropolitan area networks, data center long-reach uplinks, and service provider edge deployments where 25GbE replaces dual 10GbE links over installed SMF plant. The dual-rate envelope also supports phased upgrades where the same module covers a 10GBASE-LR link today and a 25GBASE-LR link after the host upgrade.
Compliance: CE, Class 1 FDA and IEC 60825-1 laser safety, RoHS. EU stock, ships next business day. Backed by 15+ years of EdgeOptic compatibility engineering across vendor optical platforms and a lifetime warranty. For volume pricing, custom EEPROM coding, or compatibility verification on a specific platform, contact our sales team.
25GBASE-LR SFP28 FAQs
Does 25GBASE-LR require RS-FEC to be enabled on the host switch?
Yes at 25G. 25GBASE-LR runs with host-side RS(528,514) RS-FEC; the module itself has no built-in FEC. Some switch platforms auto-enable RS-FEC when a 25GBASE-LR optic is detected; others require explicit per-interface configuration. Mismatched FEC settings between the two ends of a link produce link-down conditions that do not surface as optical errors, so confirm the FEC mode is consistent on both ends before commissioning. Check the host platform's transceiver and FEC documentation for the exact configuration command. At 10G operation, host-side FEC is not required.
Can the 25G-SFP28-10 run at 10G in a legacy 10GbE port?
The module is dual-rate and supports 10 Gigabit Ethernet (10.31 Gbps) alongside 25 Gigabit Ethernet (25.78 Gbps). Operation at 10G requires the host port to support rate selection between 10G and 25G on an SFP28 cage; not every SFP28 port negotiates down to 10G, and a 1G-only SFP port will not link up at all because SFP28 and SFP share a form factor but not an electrical interface. Verify the host's transceiver compatibility guide for SFP28 rate-select support before committing to a mixed 10G/25G deployment with a single part number.
Do I need a third-party-transceiver CLI workaround to use the 25G-SFP28-10 on Cisco, Juniper, or Arista switches?
EdgeOptic programs each unit with vendor-specific EEPROM coding for the target platform, so on supported hosts the module registers cleanly without requiring third-party-transceiver override commands. Cisco, Juniper, and Arista platforms read the same vendor-coded EEPROM and accept the optic on its vendor identity, with no third-party allow override needed. The order code drives the EEPROM coding, so order the variant that matches the deployment vendor. For platforms outside the standard EEPROM coding library or for custom coding requirements, request the target platform's ordering code through sales.