25GBASE-BX40-U 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.
Juniper Part Number
25GBASE-BX40-U
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
Key Features of Juniper 25GBASE-BX40-U Compatible LINK-PP 25G SFP28
Juniper 25GBASE-BX40-U 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.
25GBASE-BX40-U: 25 Gbps Connectivity for Long-Range Transport
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.
25GBASE-BX40-U Module with 1270nm-TX/1310nm-RX Wavelength
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.
25GBASE-BX40-U Module with Simplex LC/UPC Interface
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.
25GBASE-BX40-U Module with DOM for Real-Time Monitoring
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.
25GBASE-BX40-U Quality Certifications
These industry credentials verify that the hardware meets strict environmental laws and technical regulations required for modern telecommunications.
This product is in conformity with ISO9001. This system is valid to a company engaging in development, production and supply service of fiber optical products. Please contact us to learn more.
ISO/IEC 27001 is an international standard for managing and processing information security. This standard is jointly developed by the International Organization for Standardization (ISO) and the International Electrotechnical Commission (IEC). It sets out requirements for establishing, implementing, maintaining, and continually improving an information security management system (ISMS). Ensuring the confidentiality, integrity, and availability of organizational information assets, obtaining an ISO 27001 certificate means that the enterprise has passed the audit conducted by a certification body, proving that its information security management system has met the requirements of the international standard. Please contact us to learn more.
This product is in conformity with ISO14001.It is intended for use by an organization seeking to manage its environmental responsibilities in a systematic manner that contributes to the environmental pillar of sustainability. Please contact us to learn more.
ISO 45001 is a global standard that sets out the requirements for an occupational health and safety management system (OH&SMS).
REACH is a European Union regulation concerning the Registration, Evaluation, Authorization and Restriction of Chemicals. It came into force on 1st June 2007 and replaced a number of European Directives and Regulations with a single system. The regulation aims to protect human health and environmental safety, maintain and improve the competitiveness of the EU chemical industry, and develop innovative capabilities for non-toxic and harmless compounds to prevent market fragmentation, increase the transparency of the use of chemicals, promote non-animal experiments, and pursue sustainable social development.Please contact us to learn more.
This product meets the applicable requirements of Directive (EU) 2015/863 of RoHS. It restricts the use of 10 hazardous materials in the manufacture of various types of electronic and electrical equipment: lead, mercury, cadmium, hexavalent chromium, polybrominated biphenyls, polybrominated diphenyl ethers, and four different phthalates. Please contact us to learn more.
This product fully accords with the FCC, which aims to manage the radio wave and magnetic fields more reasonably. Please contact us to learn more.
CB is an international system operated by IECEE. This product is based on IEC standards for testing the safety performance of electrical products. Please contact us to learn more.
This product fully accords with UKCA (UK Conformity Assessed) certificate, which signifies that it meets all relevant quality standards as well as health and safety requirements. Please contact us to learn more.
UL certification is a non-mandatory certification in the United States,mainly testing and certification of product safety performance.Its ultimate purpose is to obtain products with a fairly safe level for the market,and to contribute to ensuring human health and property safety.Please contact us to learn more.
25GBASE-BX40-U Certified for Reliable Host-Device Compatibility
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.
Optical Spectrum Test
Verify precise central wavelengths and spectral width standards.
Eye Pattern Test
Analyze signal quality and transmitter performance indicators.
Bit Error Rate Test
Ensure error-free data transmission across long distances.
Temperature Test
Guarantee stable operation under extreme environmental conditions.
Product Shipping for Juniper 25GBASE-BX40-U Compatible LINK-PP 25G SFP28
We provide secure logistics solutions to ensure your optical modules arrive safely and on time worldwide.
Anti-Static Protective Packaging
Shield the delicate electronic components from static electricity damage.
Shock-Resistant Transport Protection
Protect the modules against physical impacts during handling and transit.
Fast Order Processing and Dispatch
Speed up order fulfillment for quick delivery to your facility.
Global Logistics and International Delivery
Ship products efficiently to customers across various worldwide locations.
Simply plug the 25GBASE-BX40-U 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.
25GBASE-BX40-U Technical Support
LINK-PP offers end-to-end technical support, from pre-sales consultation to post-deployment assistance, ensuring smooth integration and reliable network performance.
Pre-Sales Technical Consultation
Professional guidance to help you select the optimal 25GBASE-BX40-U module for your network design and application needs.
Compatibility Verification Support
Validated compatibility with LINK-PP switches and other mainstream networking platforms for seamless deployment.
Deployment & Installation Assistance
Comprehensive step-by-step guidance for installation, configuration, and initial setup, ensuring accurate deployment and reliable, stable operation from the start.
Long-Term Technical Assurance
Ongoing technical support throughout the product lifecycle, delivering long-term stability for enterprise and carrier-grade networks.
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
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
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
Perfect fit for enterprise core switch cluster! Using these BiDi optical modules in our corporate HQ server room to interconnect two main switch stacks across buildings. The simplex LC fiber connector snaps in tight with no mechanical play. SFF-8472 compliance ensures full telemetry reporting into our network monitoring software. Zero CRC errors recorded so far.
Please write comments with more than three
character.
494148
501614
B***n
United States
Verified
Purchase
5 .0
2026-03-16
Leasing dark fiber in metropolitan areas is incredibly expensive, so when our business needed to triple its data replication throughput between data centers, renting another fiber pair was cost-prohibitive. Deploying this BiDi single-mode SFP module allowed us to achieve 25Gbps bidirectional speeds over our existing single leased strand. The digital diagnostic monitoring (DDM) proved invaluable during staging, instantly showing us that our patch cord had a speck of dust causing high insertion loss. Once cleaned, RX power stabilized perfectly at -12dBm over our 31km link. (•‿•)✌️
Please write comments with more than three
character.
494148
501617
J***n
United States
Verified
Purchase
5 .0
2026-02-03
We completed a regional fiber loop expansion across three municipal buildings using single-strand single-mode fiber where our longest link spans approximately 34.6km with multiple old fusion splices. Thanks to the high-performance APD receiver design on these 25G SFP28 BiDi optical modules, the link maintained a solid lock without a single flap or frame drop under heavy load. The optical power budget is robust enough to easily handle real-world fiber attenuation and insertion loss. Total power consumption remained under 1.5W per module, keeping our edge switch stacks running cool in secondary distribution frames.
Please write comments with more than three
character.
494148
501607
A***y
United States
Verified
Purchase
5 .0
2025-08-14
We managed to consolidate our sprawling multi-building university network core by migrating our primary backbone links to these 25G single-fiber bidirectional transceivers. By upgrading from older 10G duplex setups to 25G BiDi on a single strand, we effectively reclaimed dozens of dark single-mode fiber pairs to use for an isolated research network. The 1270nm-TX and 1310nm-RX channel grouping provides an incredibly clean signal isolation over our 32km intramural spans with zero cross-talk detected during peak student traffic hours. The premium build quality of the pull-tab release latch makes hot-swapping incredibly reliable.
Please write comments with more than three
character.
494148
501616
A***h
United States
Verified
Purchase
5 .0
2025-06-29
We purchased 25 pairs of these BiDi optical modules to upgrade our campus backbone from 10G to 25G Ethernet. Running these over existing single-mode fiber infrastructure was an absolute breeze. The single LC optical port saved us massive fiber patching headaches. Low power consumption is definitely a plus for our cramped wiring closets. Very satisfied with LINK-PP product!
Please write comments with more than three
character.
494148
501606
M***r
Nigeria
Verified
Purchase
5 .0
2025-05-18
The sales manager for my order was absolutely wonderful. She contacted me as soon as my order hit to verify all the information was correct for what I needed and answered any questions that I had. Impressed by their working efficiency.
Please write comments with more than three
character.
494148
501584
C***e
United States
Verified
Purchase
4 .0
2025-04-23
Phenomenal transceivers, but customs delayed delivery. These 25G BiDi SFP28 optical transceivers perform exceptionally well in our EdgeSwitch cluster. Zero packet loss and clean DDM metrics. However, our bulk shipment spent an extra 3 days stuck at US customs clearance. The product is flawless, but plan ahead if you are on a tight deployment schedule!
Please write comments with more than three
character.
494148
501609
C***p
United States
Verified
Purchase
5 .0
2025-03-22
Excellent optical power budget and low attenuation! Tested on an optical time-domain reflectometer (OTDR) before live deployment. The laser output on 1270nm is remarkably stable. Over a 32km span with three patch panels, we still have about 4dB of operating margin left. The APD receiver sensitivity on these 25G SFP28 BiDi modules is top-tier.
Please write comments with more than three
character.
494148
501585
M***n
Sweden
Verified
Purchase
5 .0
2024-08-12
LINK-PP is the most user-friendly website I have ever found. It has very knowledgeable staff and offers various good products at a reasonable price. Also, the Fast delivery has helped me save a lot of time.
Please write comments with more than three
character.
494148
501590
S***i
Taiwan, Province of China
Verified
Purchase
5 .0
2024-01-01
Workable!! We purchased from LINK-PP mainly due to the competitive price if compared to others. We will look for next purchase for our own support team and for our customers.
Please write comments with more than three
character.
494148
501588
C***a
Spain
Verified
Purchase
5 .0
2023-03-15
One of my friends think highly of LINK-PP, so I thought I may have a try. I am very pleased with the service I received and the products are fantastic with a really cheap price. Also, my order arrived in a very timely manner. Great!
Please write comments with more than three
character.
494148
501600
B***d
United States
Verified
Purchase
5 .0
2022-05-28
Second time to order this Sfp Cage, used them to replace our previous one, work well and we are happy with them. I will have a look for the other products and see if we can get some also.
United States · English · USD
