Cisco SFP-25G-LR-S compatible 25GBASE-LR SFP28 transceiver is designed to provide 25 Gbps data transmission over OS2 single-mode fiber (SMF) for distances up to 10 km at a wavelength of 1310 nm using a duplex LC/UPC connector. The transceiver’s digital diagnostics-monitoring (DDM/DOM) capabilities allow for real-time monitoring of the optical transceiver with hot-swappable functionality in the SFP28 form factor. The optical engine of this transceiver uses a distributed feedback (DFB) transmitter and a photodiode receiver to offer long-reach (LR) capability at 10 km. The DFB transmitter is specific to LR reach while maintaining stable wavelength and link budget using G.652 single-mode fiber. The transceiver also supports real-time configuration and targeted validation of specific end devices for reliable deployment.
The electrical/standards of the SFP28 transceiver follow IEEE 802.3by and IEEE 802.3cc; SFF-8431 and SFF-8472 management; and the SFP28 Multi-Source Agreement (MSA) mechanical and electrical system design standards.
The power and construction of the SFP28 transceiver operate typically under 1 W per port, with a maximum of 1.2 W per port. The transceiver is constructed with a metal enclosure to reduce electromagnetic interference (EMI), has FDA Class 1 laser safety, and is RoHS compliant and lead-free.
The compatibility of the SFP28 transceiver includes interoperability with 25G interfaces that comply with IEEE standards, and the transceiver has been tested with host switches and NICs. In addition, SFP-25G-LR-S compatible payload devices are compatible with 100+ vendors, including Cisco SFP-25G-LR, Juniper Networks JNP-SFP25G-LR, Arista SFP-25G-LR, Mellanox/NVIDIA MMA2L20-AR, Dell AA094688, Brocade 25G-SFP28-LR, Extreme Networks 25G-SFP28-LR, MikroTik XS+31LC10D, Intel E25GSFP28LR, a compatible Generic SFP-25G-LR, and Palo Alto Networks PAN-SFP28-25GBASE-LR.
The SFP28 transceiver supports many use cases: direct 25G Ethernet in cloud data centers, telecom, campus, and metro aggregation, which requires a single-mode link of up to 10 km without changing LC cabling; hot-swappable and upgradable for zero-downtime maintenance.
Specifications
| Parameter | BYXGD Specification |
| Form Factor | SFP28 |
| Max Data Rate | 25.78 Gbps |
| Wavelength | 1310 nm |
| Max Distance | 10 km |
| Connector | LC Duplex (UPC) |
| Media | OS2 SMF (G.652) |
| Transmitter Type | DFB 1310 nm |
| Receiver Type | PIN |
| Modulation | NRZ |
| CDR | TX and RX |
| Inbuilt FEC | Yes |
| DDM/DOM | Support |
| TX Power | -7~2 dBm / -5.0~3.5 dBm / -4~2 dBm (model dependent) |
| Receiver Sensitivity (Min) | < -14 dBm / < -12 dBm / < -10.4 dBm (model dependent) |
| Receiver Overload | 2 dBm / > 3.0 dBm (model dependent) |
| Extinction Ratio | ≥ 3.5 dB |
| Power Budget | 8 dB (where applicable) |
| Max Power Consumption | < 1.0 W / < 1.2 W (model dependent) |
| Bit Error Ratio (BER) | 1E-12 |
| Protocol/Compliance | SFP28 MSA, SFF‑8431, SFF‑8432, SFF‑8472, IEEE 802.3by, IEEE 802.3cc, CPRI, eCPRI, RoHS, CE, REACH |
| Operating Temperature | 0 to 70°C (32 to 158°F) or -40 to 85°C (Industrial, where applicable) |
| Storage Temperature | -40 to 85°C |
| Operating Humidity | 5%–85% non‑condensing |
| Storage Humidity | 5%–95% non‑condensing |
| Dimensions (L x W x H) | 56.7 x 13.9 x 8.5 mm |
| Packaging Technology | BOX Packaging |
| Applications | 25G Ethernet, CPRI 10, eCPRI; data center, telecom, campus/metro aggregation |
| Warranty | 5 Years |
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