SFP-25GBX-D-40 operates as a 25G SFP28 BiDi single-mode optical transceiver module, delivering reliable 40km connectivity over 1310nm-TX/1270nm-RX wavelengths within a 0 to 70°C commercial temperature envelope.
Cisco Part Number
SFP-25GBX-D-40
Vendor Name
LINK-PP
Form Factor
SFP28
Max Data Rate
25.78Gbps
Wavelength
1310nm-TX/1270nm-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 Cisco SFP-25GBX-D-40 Compatible LINK-PP 25G SFP28
Cisco SFP-25GBX-D-40 Compatible LINK-PP module is a 25G SFP28 BiDi single-mode optical transceiver module that integrates advanced laser technology with built-in digital diagnostics. It delivers reliable single-fiber data transmission over extended distances while streamlining cable infrastructure. This module offers an efficient solution for network operators looking to optimize fiber utilization and maintain link integrity.
This module features a 1310nm DFB laser paired with a highly sensitive 1270nm APD receiver to ensure robust optical link quality. The combination of these components allows for precise signal transmission and clean reception over a single fiber strand. This design provides the hardware stability required for consistent network connectivity.
SFP-25GBX-D-40: 25 Gbps Connectivity for Extended Enterprise Uplinks
Designed to meet growing bandwidth demands, this transceiver delivers a steady 25Gbps data rate for critical infrastructure links. It significantly accelerates data throughput across enterprise networks without requiring a complete hardware overhaul. This makes it an ideal choice for upgrading aggregate switches and long-range core uplinks.
SFP-25GBX-D-40 Module with 1310nm-TX/1270nm-RX Wavelength
The transceiver utilizes a BiDi design with mismatched 1310nm-TX and 1270nm-RX operating wavelengths to enable simultaneous two-way traffic. By splitting the transmit and receive functions onto separate optical frequencies, it eliminates signal interference on the line. This specific wavelength pairing maximizes throughput while saving valuable physical fiber resources.
Engineered for long-range networking, this module easily sustains stable data connections across distances up to 40km on standard single-mode fiber. Its powerful optical power budget prevents signal degradation over extended geographical spans. This capability effectively bridges the gap between distant corporate offices, data centers, or regional hubs.
SFP-25GBX-D-40 Module with Simplex LC/UPC Interface
Equipped with a simplex LC/UPC connector, the module requires only one fiber strand instead of the traditional two for bidirectional communication. This design cuts fiber cabling needs exactly in half, dramatically lowering deployment and material costs. The ultra-physical contact (UPC) polish also ensures minimal back reflection at the connection point.
SFP-25GBX-D-40 Module with DOM for Real-Time Monitoring
Featuring Digital Optical Monitoring (DOM) capabilities, this module offers real-time tracking of critical operating metrics. Network administrators can easily monitor live internal parameters such as transceiver temperature, supply voltage, and laser power. This proactive data helps prevent unexpected downtime and simplifies troubleshooting procedures.
Cisco SFP-25GBX-D-40 Compatible LINK-PP adheres to strict international standards, achieving vital industry benchmarks including ISO 9001, CE, RoHS, and FCC compliance.
Every transceiver undergoes rigorous hardware verification and signal integrity testing in the lab before shipping to ensure zero defects.
SFP-25GBX-D-40 Quality Certifications
These industry credentials prove that the module adheres to the highest manufacturing regulations and global quality standards.
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.
SFP-25GBX-D-40 Certified for Reliable Host-Device Compatibility
Extensive interoperability testing ensures the module integrates seamlessly with major switch and router brands without causing link errors.
LINK-PP validates every SFP28 module through extensive qualification protocols to guarantee stable field operation, and you can explore our complete evaluation methodology at the LINK-PP Test Support Center.
Optical Spectrum Test
Measure exact laser center wavelengths to confirm peak optical precision.
Eye Pattern Test
Analyze signal waveforms to ensure clean optical transmitter quality.
Bit Error Rate Test
Verify packet transmission accuracy to guarantee data integrity under load.
Temperature Test
Confirm stable hardware performance under varied thermal conditions.
Product Shipping for Cisco SFP-25GBX-D-40 Compatible LINK-PP 25G SFP28
We follow strict packing protocols to ensure your orders arrive safely. Secure transit methods guarantee fast and reliable worldwide delivery.
Anti-Static Protective Packaging
Prevent electrostatic damage to sensitive components during handling.
Shock-Resistant Transport Protection
Safeguard the internal optics against vibrations during transit.
Fast Order Processing and Dispatch
Accelerate order fulfillment to ensure rapid product departure.
Global Logistics and International Delivery
Ship items worldwide using reliable international freight channels.
Easily deploy the Cisco SFP-25GBX-D-40 Compatible LINK-PP hot-pluggable optical module into your existing network hardware to establish instant 25Gbps connectivity. This optical transceiver is optimized for single-fiber enterprise uplinks, regional telecom routing, and metro access links requiring stable, long-distance data transmission up to 40km.
SFP-25GBX-D-40 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 SFP-25GBX-D-40 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:
The LS-BL312725-40C operates on a standard +3.3V supply and draws under 1.5W of power. This low power draw prevents port thermal throttling in dense switch configurations. By
admin on
2026-03-29
A:
This commercial-grade SFP28 module is rated for 0°C to +70°C case operating temperature inside standard indoor racks or climate-controlled enclosures. If your outdoor cabinets experience freezing winters or extreme heat, we recommend our industrial-grade version (-40°C to +85°C). By
admin on
2026-01-10
A:
Yes, the built-in SFF-8472 compliant DDM function lets you monitor optical Rx/Tx power, voltage, laser bias current, and temperature natively via SNMP or CLI. By
admin on
2025-06-26
A:
Yes, it fully supports both 25.78Gbps Ethernet (IEEE 802.3cc) and 5G eCPRI / CPRI Option 10 wireless protocols over 40km SMF. By
admin on
2025-04-04
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493445
368344
B***s
United States
Verified
Purchase
5 .0
2026-03-18
Overhauled our regional campus backbone using these 25G BiDi SFP28 optics over single-strand LC single-mode fiber. Low power consumption keeps switch chassis heat to a minimum, preserving overall hardware lifespan in compact wiring closets. Optical power diagnostics align precisely with calibrated handheld power meter measurements within a tight tolerance. Compatibility was tested across our switches and passed without any link flaps. A dependable 25G optical transceiver that delivers consistent performance at enterprise scale.
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493445
368354
P***a
Netherlands
Verified
Purchase
5 .0
2026-02-24
We needed to double our bandwidth over a leased single-strand fiber pair between two nodes 34km apart. The LINK-PP LS-BL312725-40C modules worked instantly on our core datacenter switches. DDM shows optical power well within specs at -6dBm RX.
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493445
368349
N***s
Germany
Verified
Purchase
4 .0
2026-01-20
Module synced instantly at 25G full duplex over a 37km single-strand fiber loop. Only minor critique is that the parcel was rerouted through a different regional sorting hub, adding an extra day to total transit time. High-quality hardware overall, will buy again!
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493445
368357
A***n
Singapore
Verified
Purchase
5 .0
2025-12-28
We integrated 100 units of these 25G BiDi SFP28 modules across remote hub sites for eCPRI base station backhaul. Thermal stability was a primary concern, but even inside street enclosures reaching over 50°C internal temps, the DDM telemetry logged stable laser output without wavelength drift. The 1310nm TX and 1270nm RX optical separation is clean with zero cross-talk on OTDR traces. Low power consumption under 1.5W per optic keeps the switch chassis cool, delivering genuine enterprise-grade reliability for demanding wireless backhaul.
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493445
368343
R***t
Poland
Verified
Purchase
5 .0
2025-11-17
Ideal solution for CPRI Option 10 base station links. Low power consumption under 1.5W per transceiver keeps switch thermal load manageable in tight distribution frames.
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493445
368347
S***t
Indonesia
Verified
Purchase
5 .0
2025-10-29
Used these 25G SFP28 BiDi optical modules for data center interconnect links between two buildings 35km apart with excellent performance. The 1.5W power consumption per module keeps our switch thermal budget and cooling requirements manageable. We paired these with opposite-wavelength modules for full duplex communication without issues. DOM monitoring shows stable Tx/Rx power with no drift over 2 months of continuous operation. The simplex LC connector is a huge space saver in our high-density patch panels.
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493445
368355
Z***d
India
Verified
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5 .0
2025-09-01
Bought these for our 25G NAS cluster. Single-fiber bidirectional transmission is a lifesaver when you've already maxed out your conduit space. No FEC errors so far after 3 weeks.
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493445
368351
j***a
Brunei Darussalam
Verified
Purchase
5 .0
2025-07-18
My contact with LINK-PP involved more than just a few clicks and a purchase for 1000Base-T Optical Transceiver Module. I had to make a return for no fault of the Company and they were helpful and courteous throughout the process. I am quite pleased.
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493445
368334
C***n
Ukraine
Verified
Purchase
5 .0
2025-06-23
For rural wireless ISP backhaul tower links, single-fiber BiDi modules are a lifesaver when fiber strands are limited. These 1310TX/1270RX 25G BiDi optical modules deliver full 25Gbps full-duplex speed without jitter.
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493445
368348
C***t
Japan
Verified
Purchase
4 .0
2025-05-20
Great price-to-performance ratio for a 25G SFP28 40km optical module. Compatible with our core routers without any issues. Giving 4 stars because express delivery arrived late in the evening past our facility receiving hours, forcing us to reschedule the night cutover to the next day.
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493445
368356
L***r
Israel
Verified
Purchase
5 .0
2025-04-16
We deployed 50 of these 25G BiDi modules across our district office network. Compatibility with our enterprise switches was flawless. The DOM monitoring is a nice touch for our NOC team.
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493445
368350
K***g
United States
Verified
Purchase
5 .0
2025-03-16
Guess what: they worked right away, from the moment I put them in the switch!
So I am happy. Happy that the ethernet port are the right ones, happy with you handling my case and happy with LINK-PP as a company with such a great customer care.
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493445
368331
C***m
Norway
Verified
Purchase
5 .0
2025-03-04
Deploying 25G SFP28 BiDi 40km optics for 5G fronthaul eCPRI links usually gets expensive. LINK-PP modules gave us enterprise-grade stability at a fraction of standard cost. Zero bit errors recorded after 72 hours of stress test.
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493445
368346
J***e
Indonesia
Verified
Purchase
5 .0
2024-08-09
I just placed my second order with LINK-PP and have been extremely impressed by the service. Orders are filled quickly and the prices are far better than ordering directly from local stores.
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493445
368342
M***e
Spain
Verified
Purchase
5 .0
2023-07-14
I was impressed by how easy it was to order and helpfulness of frontline staff, when I needed to change the delivery address to arrive upstate at a business function.
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493445
368340
r***g
Netherlands
Verified
Purchase
5 .0
2023-05-26
Yes you can get this item for much cheaper elsewhere but who knows what kind of quality you\'re gonna be getting. And replacing that part and dealing network problems from low quality parts will cost you much more in the long run.
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493445
368338
M***t
Hong Kong
Verified
Purchase
5 .0
2022-03-08
The price for 10/25/40G Transceiver Modules is very competitive, in fact better than I've seen elsewhere and the purchase process was flawless. I'd only purchase through l-p.com in the future.
Singapore · English · SGD
