Cisco SFP-10G-BX20U-I Compatible SFP+ 10GBASE-BX20-U BiDi 1270nm-TX/1330nm-RX 20km DOM Simplex LC/UPC SMF Optical Transceiver Module (Industrial)

Overview

This is a high-reliability industrial-grade SFP+ transceiver, specifically engineered to be 100% compatible with the Cisco SFP-10G-BX20U-I. It is designed for robust performance in harsh environments, offering a cost-effective solution for deploying high-density 10 Gigabit Ethernet links over a single strand of fiber, which significantly reduces overall cabling costs.

This module utilizes Bi-Directional (BiDi) technology with a 1270nm DFB laser transmitter and a 1330nm APD receiver, enabling simultaneous two-way communication over a single-mode fiber (SMF) up to 20 kilometers. The ‘-I’ designation signifies its industrial rating, guaranteeing stable operation in extreme temperatures from -40°C to 85°C (-40°F to 185°F). This makes it the ideal choice for outdoor deployments, industrial automation, transportation networks, and any other application exposed to severe environmental conditions.

Crucial Pairing Information: This is an ‘Upstream’ (U) module. For a successful link, it must be paired with its ‘Downstream’ (D) counterpart, the SFP-10G-BX20D-I, at the opposite end of the fiber run.

Key Features

• Fully compatible with Cisco equipment specifying the SFP-10G-BX20U-I part number.
• Industrial Temperature Rated: Operates reliably in a temperature range of -40°C to 85°C.
• BiDi Single-Fiber Operation: Transmits and receives on different wavelengths over one fiber strand, halving fiber infrastructure needs.
• Conforms to 10GBASE-BX20-U standard.
• Supports a high-speed data rate up to 10.3125 Gbps.
• Wavelengths: 1270nm-TX / 1330nm-RX.
• Reach: Up to 20km over Single-Mode Fiber (SMF).
• Connector: Simplex LC/UPC.
• Built-in Digital Optical Monitoring (DOM/DDM) for real-time diagnostics.
• Hot-pluggable SFP+ MSA-compliant form factor.

Applications

The rugged design of the SFP-10G-BX20U-I compatible module makes it perfect for demanding network environments:

• Industrial Ethernet and factory automation systems.
• Outdoor telecommunications (FTTH, 5G backhaul).
• Transportation systems (traffic control, rail networks).
• Campus, enterprise, and ISP backbone connections in unconditioned spaces.
• Security and surveillance systems with outdoor cameras.

Specifications

Cross-Platform Compatibility

While programmed for seamless integration with Cisco hardware, this module’s adherence to MSA standards ensures it can also function in equipment from other manufacturers that do not lock their ports to proprietary optics.

FAQ (Technical & Product Questions)

1. What is the main advantage of using a BiDi transceiver like the SFP-10G-BX20U-I?

The primary advantage of BiDirectional (BiDi) transceivers is fiber conservation. They use different wavelengths to send and receive data over a single fiber strand, effectively doubling the capacity of your fiber infrastructure compared to traditional dual-fiber transceivers. This leads to significant cost savings on cabling, especially in long-distance runs.

2. What happens if I connect this SFP-10G-BX20U-I module to another BX20U module?

The link will not work. BiDi transceivers work in matched pairs. The ‘U’ (Upstream) module, which transmits at 1270nm and receives at 1330nm, must connect to a ‘D’ (Downstream) module (like the SFP-10G-BX20D-I) that transmits at 1330nm and receives at 1270nm.

3. What does the “-I” signify in the SFP-10G-BX20U-I part number?

The “-I” stands for “Industrial.” It certifies that the module is hardened to operate reliably across a much wider temperature range (-40°C to 85°C) than standard commercial-grade optics (0°C to 70°C). This is essential for deployments in outdoor cabinets or unheated/uncooled locations.

4. Can I use this industrial module in a standard commercial-grade switch in an office?

Yes, absolutely. An industrial-rated module will work perfectly in a commercial environment. While it is over-specified for that application, it provides an extra layer of durability and reliability. The reverse is not true; a commercial module is likely to fail in an industrial environment.

5. Will using this compatible SFP-10G-BX20U-I void my Cisco warranty?

No. Regulations like the Magnuson-Moss Warranty Act in the U.S. and similar laws elsewhere prevent equipment manufacturers from voiding a warranty solely because you use a third-party part. Our transceivers are built to strict MSA standards to ensure they will not harm your equipment.