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25GBase-BX-U4 is a hot-pluggable 25G SFP28 BiDi optical transceiver engineered for long-reach data transmission over single-mode fiber up to 40km, integrating a 1270nm DFB transmitter and a 1310nm APD receiver with built-in Digital Diagnostic Monitoring (DDM) to ensure deterministic signal integrity across a commercial operating temperature range of 0 to 70°C.
| HW Part Number | 25GBase-BX-U4 | Vendor Name | LINK-PP | |
| Form Factor | SFP28 | Max Data Rate | 25.78Gbps | |
| Wavelength | 1270nm-TX/1310nm-RX | Max Cable Distance | 40km | |
| Connector | Simplex LC | Media | SMF | |
| Transmitter Type | DFB | Receiver Type |
APD |
|
| TX Power | -1 to +7dBm | RX Power | -15 to +3dBm | |
| Receiver Sensitivity | <-19dBm | Receiver Overload | -7dBm | |
| Operating Temperature Range | 0 to 70°C | Protocols | MSA Compliant, CPRI, eCPRI |
HW 25GBase-BX-U4 Compatible LINK-PP module is a reliable optical transceiver designed for long-distance data transmission in 25G networks. It combines advanced BiDi technology, real-time monitoring, and a single-fiber design to deliver efficient and stable network connectivity.
This module features a 2-wire interface for management specifications compliant with the SFF8472 digital diagnostic monitoring interface for optical transceivers. It ensures excellent compatibility and smooth integration into standard SFP28 ports.
This transceiver supports a high data rate of up to 25Gbps to meet the demands of modern high-speed networks. It provides the necessary bandwidth for rapid data transfer in telecom and enterprise applications.
Using BiDi technology, the module transmits data at a 1270nm wavelength and receives data at a 1310nm wavelength. This single-strand bidirectional design optimizes fiber utilization and lowers overall cabling costs.
Designed for single-mode fiber (SMF), this module supports reliable data transmission over distances up to 40km. It is an ideal solution for long-haul transport and mid-range networking environments.
The module is equipped with a single Simplex LC/UPC connector for quick and secure fiber plug-in. This compact connector design saves physical space in high-density patch panels and switches.
With built-in Digital Optical Monitoring (DOM) support, operators can track real-time parameters such as temperature, voltage, and laser power. This capability helps ensure network stability and simplifies troubleshooting.
This optical transceiver complies with major international standards including ISO 9001, CE, RoHS, and FCC to ensure exceptional manufacturing quality and global safety compliance.
Every module undergoes rigorous factory screening and performance evaluation to guarantee stable operation under heavy network loads.
These industry credentials verify that the hardware meets strict environmental laws and technical regulations required for modern telecommunications.
Comprehensive testing ensures the transceiver integrates seamlessly and functions without errors across various networking platforms and mainstream vendor switches.
Each LINK-PP SFP28 optical module undergoes extensive validation to ensure data integrity and stable connection quality under intensive network loads. Learn more about our detailed verification processes at the LINK-PP Test Support Center.
Verify precise central wavelengths and spectral width standards.
Analyze signal quality and transmitter performance indicators.
Ensure error-free data transmission across long distances.
Guarantee stable operation under extreme environmental conditions.
We provide secure logistics solutions to ensure your optical modules arrive safely and on time worldwide.
Shield the delicate electronic components from static electricity damage.
Protect the modules against physical impacts during handling and transit.
Speed up order fulfillment for quick delivery to your facility.
Ship products efficiently to customers across various worldwide locations.
Simply plug the 25GBase-BX-U4 25G SFP28 module into compatible switches for instant connectivity. It provides reliable 25G data transmission over 40km single-mode fiber links. This transceiver is widely used in enterprise networks, data centers, and 5G fronthaul architectures to deliver stable, long-distance bidirectional telecom communication.
LINK-PP offers end-to-end technical support, from pre-sales consultation to post-deployment assistance, ensuring smooth integration and reliable network performance.
Professional guidance to help you select the optimal 25GBase-BX-U4 module for your network design and application needs.
Validated compatibility with LINK-PP switches and other mainstream networking platforms for seamless deployment.
Comprehensive step-by-step guidance for installation, configuration, and initial setup, ensuring accurate deployment and reliable, stable operation from the start.
Ongoing technical support throughout the product lifecycle, delivering long-term stability for enterprise and carrier-grade networks.
LINK-PP provides after-sales support for the smooth deployment and reliable operation of the optical modules.
15-day no-reason return and refund
Free replacement for dead-on-arrival (DOA) or defective items within the initial period
Free repair services for manufacturing defects throughout the warranty period
Warranty exclusions and conditions apply
Compatible | HW | HW | HW | HW | HW | HW |
Data Rate (Max) | 25.78Gbps | 25.78Gbps | 25.78Gbps | 25.78Gbps | 25.78Gbps | 25.78Gbps |
Wavelength | 1270nm-TX/1310nm-RX | 1270nm-TX/1330nm-RX | 1330nm-TX/1270nm-RX | 1270nm-TX/1310nm-RX | 1310nm-TX/1270nm-RX | 1310nm-TX/1270nm-RX |
Connector | Simplex LC | Simplex LC | Simplex LC | Simplex LC | Simplex LC | Simplex LC |
Cable Distance (Max) | 40km | 20km | 10km | 40km | 40km | 40km |
Cable Type | SMF | SMF | SMF | SMF | SMF | SMF |
TX Power | -1 to +7dBm | -1 to +7dBm | -3 to +5dBm | -1 to +7dBm | -1 to +7dBm | -1 to +7dBm |
Receiver Sensitivity | <-19dBm | -15 to +3dBm | <-13dBm | <-19dBm | <-19dBm | <-19dBm |
Operating Temperature | 0 to 70°C | -40°C to +85°C | 0 to 70°C | -40 to 85°C | 0 to 70°C | -40 to 85°C |
Vendor Name | LINK-PP | LINK-PP | LINK-PP | LINK-PP | LINK-PP | LINK-PP |
Form Factor | SFP28 | SFP28 | SFP28 | SFP28 | SFP28 | SFP28 |
Transmitter Type | DFB | DFB | DFB | DFB | DFB | DFB |
Receiver Type | APD | PIN | PIN | APD | APD | APD |
Receiver Overload | -7dBm | 2dBm | 2dBm | -7dBm | -7dBm | -7dBm |
Protocols | MSA Compliant, CPRI, eCPRI | eCPRI, SFF-8472, SFF-8432, SFF-8431 | MSA Compliant, CPRI, eCPRI | MSA Compliant, CPRI, eCPRI | MSA Compliant, CPRI, eCPRI | MSA Compliant, CPRI, eCPRI |
| Pictures | ID# | Description | Price | Stock | Add to Cart |
Q: Does this module support bidirectional communication over multi-mode fiber infrastructure? By D***t on 2026-04-11
A: No, this long-haul 40km SFP28 transceiver is strictly engineered and calibrated for single-mode fiber installations only. By admin on 2026-04-12
Q: Is this LS-BL273125-40C SFP28 module rated for harsh outdoor unconditioned node deployments? By B***n on 2026-02-07
A: This 25G transceiver module is rated for commercial operating temperatures (0°C to 70°C). If you want to deploy the module in unconditioned outdoor environments, you can select our industrial-grade LS-BL273125-40I module with a wide temperature range (-40°C to 85°C). By admin on 2026-02-08
Q: What is the typical power consumption of this 40km 25G SFP28 module under maximum data center traffic loads? By A***h on 2025-07-21
A: The LS-BL273125-40C BiDi optical module is engineered for high energy efficiency, operating comfortably with a low power consumption profile of less than 1.5W per unit. By admin on 2025-07-22
Q: Can I use this LS-BL273125-40C optical module on both ends of a single fiber link? By C***k on 2025-05-02
A: No, BiDi modules must always be deployed in complementary pairs. You must pair this Side A module (Tx1270nm/Rx1310nm) with a Side B module (Tx1310nm/Rx1270nm) at the remote end. By admin on 2025-05-03
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