Cisco 25GBASE-BX40U-I SFP28 Transceiver Module
The Cisco 25GBASE-BX40U-I is a high-performance SFP28 transceiver module engineered for enterprise and carrier-grade 25-Gigabit networking. This bidirectional single-fiber optic module enables cost-effective long-distance connectivity over 40 km links using single-mode fiber, making it ideal for data center uplinks, campus interconnects, and industrial network deployments. With an extended industrial temperature range of -40°C to 85°C, this transceiver operates reliably in harsh environments where standard optics fail. Built for Cisco switches and routers, the 25GBASE-BX40U-I delivers the performance and durability mission-critical infrastructure demands.
Key Features
- 25-Gigabit bidirectional transmission over single-mode fiber
- 40 km reach for extended long-distance connectivity
- Industrial temperature range: -40°C to 85°C for harsh environment deployment
- SFP28 form factor compatible with Cisco switching and routing platforms
- Single-fiber architecture reduces cabling complexity and costs
- Hot-pluggable design for seamless module replacement
- Low power consumption optimized for data center efficiency
Technical Specifications
| Specification |
Details |
| Manufacturer |
Cisco Systems |
| Part Number |
SFP-25G-BX40U-I |
| Module Type |
SFP28 Transceiver |
| Data Rate |
25 Gigabit |
| Transmission Mode |
Bidirectional Single-Fiber |
| Fiber Type |
Single-Mode Fiber (SMF) |
| Maximum Distance |
40 km |
| Operating Temperature |
-40°C to +85°C |
| Form Factor |
SFP28 |
| Interface |
LC Connector |
Frequently Asked Questions
What is a 25GBASE-BX40U-I SFP28 transceiver used for?
The 25GBASE-BX40U-I SFP28 transceiver is used for high-speed 25-Gigabit networking applications including data center uplinks, campus fiber interconnects, and long-distance single-fiber deployments. Its 40 km reach makes it suitable for metropolitan area networks and industrial environments requiring extended connectivity.
How does bidirectional single-fiber transmission work?
This SFP28 module uses wavelength division multiplexing (WDM) to transmit and receive data simultaneously over a single strand of single-mode fiber. This reduces infrastructure costs by eliminating the need for dual-fiber cabling while maintaining full-duplex 25G performance.
Can the Cisco 25GBASE-BX40U-I operate in extreme temperatures?
Yes, the industrial temperature range of -40°C to 85°C enables deployment in harsh environments including outdoor installations, manufacturing facilities, and remote locations where standard optics cannot reliably function.
What Cisco devices support the 25GBASE-BX40U-I transceiver?
The SFP-25G-BX40U-I is compatible with Cisco Nexus switches, Catalyst platforms, and ASR routers equipped with SFP28 ports. Verify your specific device's optics compatibility matrix before deployment.
