Cisco 25GBASE-BX40-D SFP28 I-temp Module
The Cisco 25GBASE-BX40-D SFP28 I-temp Module is a high-performance bidirectional 25 Gigabit Ethernet transceiver engineered for enterprise data centers and long-distance network deployments requiring extended reach over single-mode fiber. This industrial-temperature SFP28 transceiver delivers reliable 25G connectivity across 40 km distances, making it ideal for campus interconnects, disaster recovery links, and carrier-grade networking environments where temperature stability and optical performance are critical.
Key Features
- Bidirectional 25 Gigabit Ethernet transmission over single-mode fiber
- 40 km reach capability with RS-FEC support on host ports
- Industrial temperature range operation for harsh deployment environments
- SFP28 form factor for high-density optical interface integration
- Low-power consumption design optimized for data center efficiency
- Cisco 25GBASE SFP28 portfolio compatibility for seamless network expansion
- Single-mode fiber connectivity for long-distance enterprise links
Technical Specifications
| Specification |
Details |
| Manufacturer |
CISCO SYSTEMS |
| Part Number |
SFP-25G-BX40D-I |
| Product Type |
SFP28 Transceiver Module |
| Data Rate |
25 Gigabit Ethernet (25GBASE) |
| Transmission Distance |
40 km over single-mode fiber |
| Fiber Type |
Single-mode fiber (SMF) |
| Transceiver Type |
Bidirectional (BiDi) |
| Temperature Range |
Industrial temperature rated |
| Form Factor |
SFP28 |
| FEC Support |
RS-FEC required on host ports for full 25G reach |
| Power Consumption |
Low-power optimized design |
| Application |
Data center, enterprise networking, campus interconnects |
Frequently Asked Questions
What is the maximum transmission distance for the Cisco 25GBASE-BX40-D SFP28?
The 25GBASE-BX40-D transceiver supports 40 km reach over single-mode fiber, making it suitable for long-distance enterprise network links and campus interconnections. RS-FEC must be enabled on the host ports to achieve full 25G performance at maximum distance.
Is this SFP28 module suitable for industrial environments?
Yes, the I-temp designation indicates this module operates across an industrial temperature range, providing reliable performance in demanding deployment environments where standard commercial temperature ranges are insufficient. This makes it ideal for outdoor installations and non-climate-controlled network closets.
What are the benefits of bidirectional 25G transceiver technology?
Bidirectional SFP28 transceivers like the 25GBASE-BX40-D reduce fiber infrastructure costs by transmitting and receiving data over a single fiber strand, enabling high-density optical networking with simplified cabling while maintaining full 25 Gigabit Ethernet performance.
How does this module integrate with existing Cisco networking equipment?
The Cisco 25GBASE SFP28 portfolio ensures compatibility across Cisco data center and enterprise switches. The SFP28 form factor allows seamless insertion into compatible host ports, enabling rapid network upgrades and capacity expansion without requiring hardware replacement.
