Overview
This is an industrial-grade 10GBASE-BX BiDi SFP+ transceiver, designed as a fully compatible alternative to the Cisco SFP-10G-BX40D-I. This powerful module revolutionizes network design by transmitting and receiving data over a single strand of fiber. As a result, it effectively doubles your network’s capacity without the need to lay new fiber cables. Furthermore, its industrial rating guarantees flawless performance in extreme temperatures, from -40°C to 85°C. This makes it the perfect choice for outdoor deployments, factory automation, and other challenging environments.
Key Features
- Bi-Directional (BiDi) Technology: Utilizes Wavelength Division Multiplexing (WDM) to operate over a single fiber, thereby reducing infrastructure costs.
- Industrial Temperature Range: Built with hardened components to ensure reliable operation in harsh temperature conditions from -40°C to 85°C (-40°F to 185°F).
- 40km Long Reach: Delivers 10Gbps connectivity over distances of up to 40 kilometers on a single-mode fiber link.
- Guaranteed Compatibility: Functions as a seamless, plug-and-play replacement for the Cisco SFP-10G-BX40D-I module.
- Digital Optical Monitoring (DOM): In addition, it provides real-time access to key operational parameters like optical power, temperature, and voltage for easier network management.
- Simplex LC Connector: Features a single LC connector interface, simplifying cable management.
Applications
The unique combination of single-fiber operation, long reach, and rugged construction makes this module essential for specific applications. For example, it is ideally suited for:
- Industrial Ethernet and Factory Automation Networks
- Outdoor Deployments (e.g., traffic control, surveillance)
- Fiber-to-the-Home (FTTH) and Curb (FTTC) networks
- Campus and Enterprise networks with limited fiber availability
- Harsh Environment Carrier and Service Provider Networks
Specifications
| Parameter | Value |
|---|---|
| Compatibility | Cisco SFP-10G-BX40D-I |
| Form Factor | SFP+ |
| Protocol | 10GBASE-BX (BiDi) |
| Max Data Rate | 10.3125 Gbps |
| Wavelength | TX: 1330nm / RX: 1270nm |
| Max Cable Distance | 40km |
| Connector | Simplex LC/UPC |
| Fiber Type | Single-Mode Fiber (SMF) |
| Transmitter Type | DFB |
| Receiver Type | APD |
| DOM Support | Yes |
| Industrial Temperature Range | -40 to 85°C (-40 to 185°F) |
| Protocols | SFF-8472, SFF-8431, SFF-8432, RoHS Compliant |
Cross-Platform Compatibility
In addition to being a perfect alternative for the Cisco SFP-10G-BX40D-I, this versatile module is engineered based on Multi-Source Agreement (MSA) standards. For this reason, it offers broad interoperability with a wide range of equipment from other major manufacturers. Below is a list of potential equivalent part numbers this module can replace:
| Manufacturer | Equivalent Part Number |
|---|---|
| Juniper | SFPP-10GE-BX40-D-I |
| Arista | SFP-10G-BXD40-I |
| MSA Generic | SFP-10G-BX40-D-I |
Note: This is a downstream (D) module and must be paired with an upstream (U) module, such as the SFP-10G-BX40U-I, on the opposite end of the link.
Advantages
By choosing this compatible industrial BiDi module, you gain several key advantages. First and foremost, you dramatically reduce fiber cable costs by using one strand instead of two. Secondly, the industrial-grade design ensures network uptime and reliability in the most challenging conditions. Moreover, you achieve substantial cost savings compared to OEM transceivers without any performance sacrifice. Ultimately, this gives you the freedom and flexibility to build more resilient and cost-effective networks without being locked into a single vendor’s ecosystem.
FAQ (Technical & Product Questions)
1. What is a BiDi transceiver and how does it work?
A BiDi (Bi-Directional) transceiver sends and receives data over a single fiber optic cable. It achieves this using Wavelength Division Multiplexing (WDM), which assigns different wavelengths of light for transmitting (TX) and receiving (RX). Consequently, it allows for two-way communication on one fiber strand, unlike standard transceivers that need two strands.
2. What does “D” in SFP-10G-BX40D-I mean?
The “D” stands for “Downstream.” In a BiDi pair, one module is designated Downstream and the other Upstream (“U”). The Downstream module transmits at a higher wavelength (1330nm) and receives at a lower one (1270nm). Therefore, it must be paired with an Upstream module on the other end which does the opposite (TX: 1270nm / RX: 1330nm).
3. Why is an Industrial (-I) grade module necessary?
An industrial-grade module is crucial for equipment in uncontrolled environments. For example, outdoor cabinets, factory floors, or remote cell sites experience extreme temperatures. Standard modules fail in such conditions, but industrial modules use hardened components to operate reliably from -40°C to 85°C, ensuring network stability.
4. Can I connect two SFP-10G-BX40D-I modules to each other?
No, you cannot. A link will not be established. Because both modules would be transmitting on the 1330nm wavelength and trying to receive on the 1270nm wavelength, they cannot communicate. You must always connect a “D” (Downstream) module to a “U” (Upstream) module, like the SFP-10G-BX40U-I, to create a working link.
5. Is this module compatible with a standard SFP+ port?
Yes, this SFP+ module will physically fit and work in any standard 10G SFP+ port on a switch, router, or other networking device. The key consideration is not the port itself, but ensuring the module on the opposite end of the fiber link is the correct matching BiDi “Upstream” partner.
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