CWDM-SFP-1270 CWDM SFP module provides 1Gbps data rate over a 1270nm CWDM wavelength, built with a DFB laser and PIN receiver, and achieves an 80km link budget on single-mode fiber. It incorporates real-time DDM functionality covering Tx/Rx power, supply voltage, bias current, and temperature. The standard operating temperature range is 0 to +70°C.
Dell Part Number
CWDM-SFP-1270
Vendor Name
LINK-PP
Form Factor
SFP
Max Data Rate
1.25Gbps
Wavelength
1270nm
Max Cable Distance
80km
Connector
Duplex LC
Media
SMF
Transmitter Type
DFB
Receiver Type
PIN
TX Power
-1 to +4dBm
RX Power
-26 to -1dBm
Receiver Sensitivity
-26dBm
Receiver Overload
-1dBm
EMC (Electromagnetic Compatibility)
Supported
DDM Support
Yes
Operating Temperature Range
0 to 70°C
Protocols
SFP MSA、SFF-8472
Key Features of Dell CWDM-SFP-1270 Compatible LINK-PP 1.25G SFP
Dell CWDM-SFP-1270 Compatible LINK-PP module is a commercial-grade 1G SFP CWDM transceiver that integrates a 1270nm DFB laser, an 80km reach on single-mode fiber, a duplex LC interface, and digital diagnostic monitoring. It also supports hot-pluggable installation and complies with SFP MSA standards. These features together deliver reliable optical connectivity for long-span links.
This SFP module adopts the standard hot-pluggable SFP footprint for easy field replacement and system maintenance. It is fully compliant with the SFP Multi-Source Agreement (MSA), ensuring interoperability with a wide range of host equipment.
CWDM-SFP-1270: 1 Gbps Connectivity for Extended-Reach SMF Spans
The transceiver operates at a data rate of 1Gbps, making it ideal for extended-reach applications over single-mode fiber. It provides a cost-effective solution for connecting remote network nodes across campus or regional backbones.
CWDM-SFP-1270 Module with CWDM Technology for Fiber Efficiency
This CWDM module allows multiple optical channels to be combined onto a single fibre strand, maximising the use of existing fibre infrastructure. It operates on a designated CWDM wavelength, helping to reduce the need for additional fibre deployment.
CWDM-SFP-1270 Module with 1270nm Wavelength
The 1270nm optics transceiver incorporates a distributed feedback (DFB) laser that delivers stable and narrow-band optical output. This wavelength is specified in the CWDM grid and supports low-attenuation transmission over standard SMF.
CWDM-SFP-1270 Module Supporting 80km Transmission
The module is engineered to reach distances up to 80km on single-mode fibre without requiring optical amplification. It offers sufficient optical link budget to maintain reliable signal integrity over such long spans.
CWDM-SFP-1270 Module with Duplex LC Interface
This 1G SFP features a standard dual-LC connector, which simplifies fibre cabling and ensures a secure physical connection. This interface is widely adopted in telecom and data-centre environments, providing easy mating with existing patch panels.
CWDM-SFP-1270 Module with DDM for Real-Time Monitoring
The DDM-enabled transceiver provides real-time access to critical operating parameters, including operating temperature, supply voltage, laser bias current, and received/transmitted optical power. It's compatible with the SFF-8472 digital diagnostics functions, allowing network managers to monitor link health and predict potential failures.
CWDM-SFP-1270 1G SFP optical transceiver holds essential global certifications, including ISO 9001, CE, RoHS, and FCC compliance. These standards ensure the module meets high-quality, safety, and environmental protection requirements.
Each module undergoes strict physical and optical testing before leaving the factory. This rigorous process guarantees consistent performance and high reliability in real-world networks.
CWDM-SFP-1270 Quality Certifications
The transceiver follows international production standards to maintain top-tier manufacturing quality. These credentials prove its safety, environmental friendliness, and long-term durability.
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.
CWDM-SFP-1270 Certified for Reliable Host-Device Compatibility
This 1G SFP module is fully tested to work seamlessly with various switch, router, and server brands. It ensures smooth data transmission and stable plug-and-play network connections.
Rigorous Testing Ensures Reliable SFP Performance
Every CWDM-SFP-1270 1G SFP module undergoes extensive quality checks to guarantee stable data transmission and long-term durability. Discover our full validation methodology at the LINK-PP Test Support Center.
Optical Spectrum Test
Measure wavelength accuracy and spectral width to verify exact optical performance standards.
Eye Pattern Test
Analyze signal integrity and waveform quality to ensure clear high-speed transmission.
Bit Error Rate Test
Validate data accuracy across maximum spans to ensure reliable error-free connectivity.
Temperature Test
Evaluate module stability under extreme conditions to prevent field performance drops.
Product Shipping for Dell CWDM-SFP-1270 Compatible LINK-PP 1.25G SFP
We carefully package every CWDM-SFP-1270 optical transceiver to prevent damage and guarantee safety during transit. Our efficient delivery process ensures your order arrives quickly and securely anywhere in the world.
Anti-Static Protective Packaging
Protect sensitive optical electronics from electrostatic discharge during storage and transit.
Shock-Resistant Transport Protection
Shield sensitive hardware against physical impacts and vibration throughout the shipping process.
Fast Order Processing and Dispatch
Prepare and release confirmed orders promptly to minimize network deployment waiting times.
Global Logistics and International Delivery
Ship transceiver modules worldwide through trusted freight carriers for dependable site arrival.
Align the CWDM-SFP-1270 1270nm CWDM 1G SFP transceiver with the switch port, lock the bail latch, and connect LC single-mode fiber patch cables. Verify link status and optical signal strength via the switch management interface for extended-reach SMF spans across regional rings and long-haul campus interconnects.
CWDM-SFP-1270 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 CWDM-SFP-1270 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:
Yes. The transceiver strictly adheres to ITU-T G.694.2 CWDM grid specifications and features a standard duplex LC interface. Its optical launch power and high-sensitivity PIN receiver provide sufficient power budget to pass cleanly through passive single-mode MUX/DEMUX filters with minimal insertion loss penalties. By
admin
A:
No. The LS-CW271G-80C CWDM module is built specifically for single-mode Fiber. Running it over multimode fiber introduces severe modal dispersion and high optical coupling loss. By
admin
A:
The module handles sub-zero warehouse conditions without issue. While active operating limits are 0°C to 70°C, the non-operating storage rating spans -40°C to 85°C, making unpowered cold storage completely safe. By
admin
A:
Yes. The transceiver natively supports both 1.063Gbps Fibre Channel and 1.25Gbps Gigabit Ethernet, allowing you to run storage area network (SAN) traffic across the 1270nm multiplexed CWDM channel. By
admin
We rolled out these optics across several regional sites to standardize our 1G CWDM 1270nm channel and simplify spares logistics. The uniform behavior across locations makes capacity planning and troubleshooting much easier. DDM data flows cleanly into our dashboards, letting us spot fiber degradation early. Field technicians find the modules easy to handle and replace, with no special procedures required. The result is a more predictable network with lower operational overhead.
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492480
451435
B***r
Finland
Verified
Purchase
5 .0
2026-03-09
Added this 80km 1270nm transceiver into our existing 8-channel CWDM passive filter. Insertion loss was well within spec and receiver sensitivity did not clip. Super smooth setup!
Please write comments with more than three
character.
492480
451440
F***n
Thailand
Verified
Purchase
5 .0
2026-02-27
Used in a campus upgrade: 1270nm CWDM 1G SFP over existing SMF patch panels. No compatibility issues, DDM shows real-time optical power, and the BER stays solid.
Please write comments with more than three
character.
492480
451438
E***r
Turkey
Verified
Purchase
5 .0
2025-12-08
During a campus network refresh, we replaced legacy optics with these 1270nm CWDM modules to align with our multiplexer grid. Every port came up cleanly on first insert, and the switches recognized the transceivers without custom coding. Real-time optical diagnostics feed neatly into our NMS, making it easy to validate link health remotely. The modules run cool in dense chassis and maintain steady performance under variable load. We’ve since standardized this module for all new 1G CWDM 1270nm deployments. Excellent fit for structured fiber designs and future-proof channel planning.
Please write comments with more than three
character.
492480
451432
E***r
Bulgaria
Verified
Purchase
4 .0
2025-10-05
Reliable 1G CWDM 1270nm optics with standard SFP MSA compatibility. Lead time was a bit longer than hoped, but the unit price at volume makes it worthwhile.
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character.
492480
451434
A***s
Romania
Verified
Purchase
5 .0
2025-07-19
Matched this 1270nm SFP module with our 1310nm/1550nm CWDM channels on the same fiber pair. Zero crosstalk issues and clean wavelength separation. A very economical way to multiply fiber capacity.
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492480
451441
E***e
South Africa
Verified
Purchase
5 .0
2025-06-18
For a commercial-grade 1G CWDM SFP, the performance is consistent. We run these in indoor distribution frames with Duplex LC jumpers; insertion loss is predictable and the modules don’t overheat. Solid value for 1.25Gbps CWDM deployments.
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character.
492480
451439
Q***e
Denmark
Verified
Purchase
4 .0
2025-05-07
These 1G SFP optical transceivers perform great — 1270nm CWDM, 80km SMF, DDM all spot-on. Only nit: one module’s label was slightly crooked, but functionality is perfect.
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character.
492480
451444
G***y
Russian Federation
Verified
Purchase
5 .0
2025-04-01
Deployed these 1270nm CWDM SFP modules across our metro fiber ring; 80km SMF links stay clean with no CRCs. DDM data matches our NMS, and the Duplex LC connectors seat firmly. For the price, it’s a no-brainer for 1G backhaul.
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character.
492480
451436
F***t
Philippines
Verified
Purchase
5 .0
2024-12-08
We needed a cost-effective 1.25Gbps CWDM option for point-to-point links. These modules hit the spec: TX -1 to +4 dBm, RX sensitivity -26 dBm, and stable operation at 0–70°C. Pairing with our CWDM MUX was seamless.
United States · English · USD
