The CWDM-SFP-1550 is a 1G SFP CWDM optical module operating at 1550nm. It integrates a DFB laser and a PIN photodiode, supports data rates up to 1.25Gbps, and enables transmission over up to 40km on standard single-mode fiber. The module includes real-time digital optical monitoring and is specified for a standard operating temperature range of 0 to +70°C.
Dell Part Number
CWDM-SFP-1550
Vendor Name
LINK-PP
Form Factor
SFP
Max Data Rate
1.25Gbps
Wavelength
1550nm
Max Cable Distance
40km
Connector
Duplex LC
Media
SMF
Transmitter Type
DFB
Receiver Type
PIN
TX Power
-5 to 0dBm
RX Power
-26 to -1dBm
Receiver Sensitivity
-24dBm
Receiver Overload
-1dBm
EMC (Electromagnetic Compatibility)
Supported
DOM Support
Yes
Operating Temperature Range
0 to 70°C
Protocols
SFP MSA、SFF-8472
Key Features of Dell CWDM-SFP-1550 Compatible LINK-PP 1.25G SFP
Operating at 1550nm with a 40km reach over single-mode fiber, the Dell CWDM-SFP-1550 Compatible LINK-PP module is offered as a 1G SFP CWDM module. A duplex LC connector, DOM compliant with SFF-8472, and a hot-pluggable MSA-compliant SFP footprint are included in its design. With an operational temperature range of 0 to +70 °C, the module is well suited for commercial-grade networking deployments.
Featuring a hot-pluggable SFP footprint, the module allows easy installation and replacement without system power-down. It is fully compliant with the SFP Multi-Source Agreement, ensuring compatibility with standard host ports and cages.
CWDM-SFP-1550: 1 Gbps Connectivity for Metro and Regional Access
Providing a line rate of 1Gbps, this module is well suited for metro and regional access networks. It delivers cost-effective connectivity for medium-range links in city-wide or area-wide infrastructures.
CWDM-SFP-1550 Module with CWDM Technology for Fiber Efficiency
The CWDM technology integrated in the module enables multiple optical channels to coexist on one fiber, maximizing fiber utilization. It reduces the need for additional fiber strands, which is beneficial for network expansion and capacity upgrades.
CWDM-SFP-1550 Module with 1550nm Wavelength
Operating at the 1550nm wavelength, this transceiver leverages the lowest attenuation window of single-mode fiber. The 1550nm channel is a standard CWDM grid point, providing stable and predictable optical performance.
CWDM-SFP-1550 Module Supporting 40km Transmission
Supporting distances of up to 40km, the transceiver is designed for extended-reach applications over single-mode fiber. It provides adequate optical power budget to maintain signal integrity over long spans without regeneration.
CWDM-SFP-1550 Module with Duplex LC Interface
Equipped with a duplex LC interface, this SFP module ensures secure and polarized fiber connections. The LC connector is widely adopted in networking equipment, offering low insertion loss and easy mating.
CWDM-SFP-1550 Module with DOM for Real-Time Monitoring
With built-in DOM functionality, the module offers real-time monitoring of parameters such as Tx/Rx power, bias current, and temperature. It is compatible with SFF-8472 digital diagnostics, allowing network administrators to proactively detect link degradation.
The Dell CWDM-SFP-1550 Compatible LINK-PP 1G SFP optical transceiver complies with global manufacturing and safety standards. It maintains certified compliance under ISO 9001, CE, RoHS, and FCC frameworks.
Each module undergoes optical output and signal integrity verification before distribution. Hardware inspections confirm stable optical transmission and link continuity across standard temperature ranges.
CWDM-SFP-1550 Quality Certifications
Documented compliance verifies adherence to international environmental safety guidelines. These official approvals confirm that factory production aligns with standardized quality management controls.
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-1550 Certified for Reliable Host-Device Compatibility
The module completes full hardware recognition checks across various network platforms. Physical-layer validation ensures seamless plug-and-play operation with host equipment.
Rigorous Testing Ensures Reliable SFP Performance
Comprehensive testing procedures verify signal accuracy and continuous optical output across actual networks. Explore our full validation methodology at the LINK-PP Test Support Center.
Optical Spectrum Test
Analyze center wavelength precision to avoid channel interference across fiber links.
Eye Pattern Test
Inspect signal rise and fall times to guarantee clean transmission waveforms.
Bit Error Rate Test
Check packet transfer accuracy to eliminate data loss during heavy traffic.
Temperature Test
Validate hardware thermal limits to ensure dependable operation in tough environments.
Product Shipping for Dell CWDM-SFP-1550 Compatible LINK-PP 1.25G SFP
Safe transit methods protect your modules throughout the entire fulfillment process. Dependable carrier options ensure your shipment arrives securely and on schedule.
Anti-Static Protective Packaging
Protect sensitive optical circuits from electrostatic discharge damage.
Shock-Resistant Transport Protection
Safeguard optical modules against harsh drops and physical vibrations.
Fast Order Processing and Dispatch
Fulfill pending customer orders rapidly to ensure short fulfillment lead times.
Global Logistics and International Delivery
Ship transceiver orders globally through trusted international express carriers.
Align the CWDM-SFP-1550 CWDM SFP module with the optical slot and slide it in until firmly seated. Connect LC fiber cabling to activate the 1550nm channel. Designed for easy deployment, this module connects switches and routers across extended metro links and regional access networks.
CWDM-SFP-1550 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-1550 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 LS-CW551G-40C module features a standard hot-pluggable SFP footprint, so you can insert or remove it while the switch is powered on without interrupting other active ports. By
admin on
2026-04-14
A:
In most standard deployments, yes. The module's 1550nm DFB laser and PIN receiver provide an optical power budget designed for up to 40km over standard single-mode fiber. However, because real-world links include patch panels, fiber splices, and potential MUX/DEMUX insertion loss, we always recommend calculating your total end-to-end dB loss to ensure adequate safety margin. By
admin on
2026-02-21
A:
Yes. Its high-stability DFB laser is engineered to stay well within the typical 1550nm CWDM passband tolerance across the entire operating temperature range, ensuring minimal insertion loss and clean channel isolation across your passive multiplexer filters. By
admin on
2025-08-27
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492336
453537
T***e
Canada
Verified
Purchase
5 .0
2026-04-03
We leased a dedicated fiber pair running around 32km between our main office and backup site. Installed these 1550nm CWDM 40km SFP modules on our edge switches, and they established sync immediately with steady -14 dBm optical receive levels.
Please write comments with more than three
character.
492336
453541
Q***t
India
Verified
Purchase
5 .0
2026-03-30
Used a pair of these 1550nm CWDM SFP transceivers to link our base station aggregation switch back to the local fiber POP. Solid 1.25Gbps line rate with low latency over single-mode fiber.
Please write comments with more than three
character.
492336
453540
H***t
Russian Federation
Verified
Purchase
5 .0
2026-01-04
Bought a few to test before a bigger order. These 1G CWDM modules linked up in seconds on our switch, and the SFF-8472 DOM info is clean. Definitely ordering more for the full deployment.
Please write comments with more than three
character.
492336
453547
K***n
Italy
Verified
Purchase
5 .0
2025-10-29
Bought a batch for our warehouse fiber build. These 1G SFP 1550nm CWDM modules linked up to our aggregation switch with zero config drama. DOM readings are spot on and the duplex LC single-mode connectors seated nice and snug. Good value for 40km reach.
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character.
492336
453545
O***r
Republic of Korea
Verified
Purchase
5 .0
2025-09-09
Operating within our climate-controlled data center at around 44°C. The standard commercial temperature range handles continuous 1G traffic loads with no packet loss or CRC error spikes.
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character.
492336
453544
O***m
Belgium
Verified
Purchase
5 .0
2025-07-19
After running a 2-month continuous trial in our central office distribution racks, these 1G CWDM 40km SFP transceivers have demonstrated absolute uptime with zero link flapping. Standard MSA compliance ensures a perfect physical fit across high-density line cards without obstructing adjacent duplex LC ports. The laser driver circuitry maintains tight optical power control regardless of ambient room temperature fluctuations. Highly recommended for any serious network infrastructure team.
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492336
453550
I***e
Singapore
Verified
Purchase
5 .0
2025-06-18
Ordered 20 for a campus network refresh. Every single one powered up and linked at 1.25G. Packaging was solid, each module tested clean. Great 40km CWDM SFP option for the money.
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492336
453546
N***e
Austria
Verified
Purchase
4 .0
2025-05-14
Solid 1G CWDM SFP that does the 40km job perfectly. Took a star off only because the tracking updates were a bit slow and I couldn't tell when it would actually land. Product quality is not the issue here.
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492336
453539
P***s
Mexico
Verified
Purchase
5 .0
2025-02-11
We were looking for cost-effective alternatives to costly OEM optics for our campus distribution layer. These 1G 1550nm CWDM SFP transceivers slotted in without throwing any unsupported transceiver warnings.
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character.
492336
453538
C***e
Indonesia
Verified
Purchase
5 .0
2025-01-08
Installed these 1550nm CWDM SFP transceivers into our optical transport equipment for local tributary grooming. Verified the optical parameters using our OTDR and optical spectrum analyzer: the central wavelength is spot-on with excellent spectral width suppression. The PIN receiver sensitivity easily meets the strict requirements of our long-reach links, making this 40km SFP optical transceiver ideal for regional distribution nodes and cell site transport applications without the need for costly external amplification.
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