Description
The Cisco SFP-25G-ER-I is a high-performance, industrial-grade transceiver module designed for 25 Gigabit Ethernet connectivity over long distances. Engineered for extended temperature ranges and harsh environments, this module supports up to 25 Gbps data rates over single-mode fiber (SMF) with a reach of up to 40 kilometers using an LC duplex connector. Its compact SFP28 form factor ensures compatibility with a wide range of Cisco networking equipment, making it a reliable option for expanding bandwidth in data centers or metro networks. The metal housing provides EMI protection while maintaining low power consumption, typically under 2.5W.
Key features include Digital Optical Monitoring (DOM) support for real-time diagnostics such as temperature, voltage, and optical power levels. The module complies with SFP28 MSA and IEEE 802.3by standards, ensuring interoperability with other compliant devices. Designed with an industrial temperature rating (-40°C to 85°C), it is well-suited for deployment in rugged environments where standard transceivers may fail. Buyers seeking dependable, used network hardware will find this module offers both performance and durability for mission-critical networking needs.

