The CWDM-SFP-1390-20 CWDM module utilizes a 1390nm DFB transmitter paired with a PIN photo detector to support transmission distances of up to 20km over single-mode fiber at up to 1.25Gbps. It integrates real-time digital diagnostic monitoring capabilities to track critical optical parameters across a 0 to +70°C commercial operating temperature range.
Cisco Part Number
CWDM-SFP-1390-20
Vendor Name
LINK-PP
Form Factor
SFP
Max Data Rate
1.25Gbps
Wavelength
1390nm
Max Cable Distance
20km
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
DDM Support
Supported
Operating Temperature Range
0 to 70°C
Protocols
SFP MSA、SFF-8472
Key Features of Cisco CWDM-SFP-1390-20 Compatible LINK-PP 1.25G SFP
Cisco CWDM-SFP-1390-20 Compatible LINK-PP module combines standard-compliant pluggable hardware, CWDM wavelength efficiency, and real-time digital monitoring into a single optical transceiver. It delivers reliable 1Gbps single-mode connectivity across medium-range enterprise and metro infrastructures.
This transceiver features a hot-pluggable SFP footprint that allows easy installation and replacement without powering down host switches. Full compliance with the SFP MSA standard ensures seamless mechanical and electrical interoperability across diverse networking hardware.
CWDM-SFP-1390-20: 1 Gbps Connectivity for Point-to-Point Enterprise Links
Gigabit Ethernet throughput provides stable bandwidth to link separate campus buildings and corporate office facilities. Dedicated 1Gbps transmission handles daily business data traffic efficiently across direct point-to-point connections.
CWDM-SFP-1390-20 Module with CWDM Technology for Fiber Efficiency
The CWDM technology allows multiple data channels to run simultaneously over the same single-mode fiber pair. Network operators can significantly expand overall transport capacity without the high cost of deploying new physical cabling.
CWDM-SFP-1390-20 Module with 1390nm Wavelength
A precise 1390nm operational wavelength serves as a dedicated optical channel within standard ITU-T CWDM grid systems. Operating at this specific wavelength prevents channel interference and ensures clean multiplexing with other wavelength streams.
The internal optical power budget allows signals to travel up to 20km over single-mode fiber infrastructure. Such reach reliably covers regional distribution networks, metro aggregation spans, and distant enterprise sites.
CWDM-SFP-1390-20 Module with Duplex LC Interface
Industry-standard duplex LC optical connectors provide a secure, low-loss physical connection for single-mode fiber patch cables. Compact connector geometry saves panel space and simplifies dense fiber patch management inside rack enclosures.
CWDM-SFP-1390-20 Module with DDM for Real-Time Monitoring
Integrated Digital Diagnostic Monitoring (DDM) operates in compliance with the SFF-8472 standard for continuous internal telemetry. System administrators can easily track real-time optical Rx power, Tx power, supply voltage, laser bias current, and operating temperature.
Cisco CWDM-SFP-1390-20 Compatible LINK-PP optical transceiver modules are manufactured under strict ISO 9001 quality management systems. Each module complies fully with international regulatory standards, holding certified approval for CE, RoHS, and FCC deployment requirements.
Every CWDM SFP module undergoes comprehensive physical and optical testing before leaving the factory floor. Rigorous evaluations verify stable optical transmit power, receiver sensitivity, and signal integrity under continuous operational workloads.
CWDM-SFP-1390-20 Quality Certifications
Official compliance credentials confirm that the hardware meets strict environmental safety, electromagnetic interference, and manufacturing quality benchmarks. These standardized authorizations assure network administrators that the modules operate safely within network environments.
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-1390-20 Certified for Reliable Host-Device Compatibility
Standardized EEPROM programming ensures seamless identification across multi-vendor optical switches, routers, and media converters. Verified protocol compliance guarantees plug-and-play network stability without triggering port configuration faults or recognition errors.
Rigorous Testing Ensures Reliable SFP Performance
Comprehensive physical-layer validation verifies stable optical transmission and hardware reliability across every CWDM-SFP-1390-20 CWDM SFP module. For detailed testing methodologies and qualification reports, explore the LINK-PP Test Support Center.
Optical Spectrum Test
Verify central wavelength accuracy and side-mode suppression ratio metrics.
Eye Pattern Test
Analyze transmitter signal quality to ensure clean optical waveforms.
Bit Error Rate Test
Evaluate data transmission integrity across maximum single-mode fiber reaches.
Temperature Test
Confirm stable hardware operation across commercial thermal operating ranges.
Product Shipping for Cisco CWDM-SFP-1390-20 Compatible LINK-PP 1.25G SFP
Every CWDM-SFP-1390-20 1G SFP transceiver is carefully packaged and processed through reliable distribution workflows to ensure safe arrival. Standardized handling procedures protect internal components while supporting fast, dependable delivery to customers worldwide.
Anti-Static Protective Packaging
Prevent electrostatic discharge damage during standard handling and storage.
Shock-Resistant Transport Protection
Protect delicate optical components from external impacts during shipment.
Fast Order Processing and Dispatch
Ensure rapid warehouse fulfillment to minimize customer order waiting times.
Global Logistics and International Delivery
Provide dependable international shipping coverage through established logistics carriers.
Install the CWDM-SFP-1390-20 hot-swappable SFP module into a host switch and attach duplex LC single-mode fiber cabling. Transmitting across the 1390nm CWDM wavelength grid, the transceiver establishes clean 1Gbps point-to-point enterprise links to bridge separate corporate locations, campus buildings, and regional nodes within 20km.
CWDM-SFP-1390-20 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-1390-20 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:
Absolutely. The 1390nm wavelength strictly adheres to the standard 20nm ITU CWDM grid, placing it well within the passband of standard 8-channel passive multiplexers. Its DFB laser maintains a narrow spectral width and, combined with adjacent-channel isolation of >30dB, ensures negligible cross-channel bleeding and optical interference with neighboring wavelengths like 1370nm or 1410nm across the full 0~70°C operating range. By
admin on
2026-05-06
A:
Yes, the transceiver is fully RoHS compliant (2011/65/EU) and manufactured without hazardous substances like lead or mercury. It also features a fully shielded metal housing and complies with FCC Part 15 Class A and CE Mark electromagnetic emission standards for reliable operation in commercial enterprise environments. By
admin on
2026-02-08
A:
Yes. Alongside standard 1.25Gbps Gigabit Ethernet, this transceiver fully supports 1.063Gbps Fiber Channel protocols. It provides a direct plug-and-play solution for offsite data backups, SAN storage links, and server replication. By
admin on
2025-07-11
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character.
491744
462442
A***r
India
Verified
Purchase
5 .0
2026-04-19
Great optic for commercial surveillance backhaul. Connected several IP camera distribution switches to our main security control room over a single fiber strand using CWDM. :)
Please write comments with more than three
character.
491744
462448
N***n
Hong Kong
Verified
Purchase
5 .0
2026-02-11
Used this 1390nm SFP transceiver with our passive CWDM multiplexer to expand network capacity without running extra fiber. Link has been running clean 24/7 with zero frame drops.
Please write comments with more than three
character.
491744
462439
E***n
Spain
Verified
Purchase
5 .0
2026-01-11
Installed across our edge distribution switches to feed retail branch uplinks. The modules were recognized immediately by standard SFP slots without configuration hassles. Sturdy latch mechanism and very stable optical output make it great for enterprise rollouts.
Please write comments with more than three
character.
491744
462451
J***k
Taiwan, Province of China
Verified
Purchase
5 .0
2025-12-28
Standard MSA compliance made setup effortless on our core network gear. Digital diagnostics report accurate laser temperature and voltage right out of the box. =D
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491744
462441
A***l
Germany
Verified
Purchase
5 .0
2025-10-12
Great upgrade for expanding bandwidth across our private corporate fiber ring. Instead of paying for costly new fiber trenching, this 20km SFP module plugged right into our CWDM mux grid. Signal stayed strong at -16 dBm with zero link flapping over weeks of use.
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491744
462450
C***n
India
Verified
Purchase
5 .0
2025-09-29
Installed in our server room aggregation switch. The duplex LC connector clicks in firmly, and temperature levels stay well within the normal 0 to 70C range under daily business traffic.
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491744
462445
P***k
Russian Federation
Verified
Purchase
5 .0
2025-07-21
Deployed this 1.25G SFP CWDM module to connect two office buildings across a business park. Optical link came up right away, and real-time monitoring shows clear transmit and receive levels. =)
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491744
462443
E***n
Romania
Verified
Purchase
5 .0
2025-06-01
We set up a dedicated management channel across our remote utility substations using this 1390nm CWDM 1G SFP module. SFF-8472 digital telemetry syncs cleanly with our central monitoring system, giving our operations team real-time visibility into fiber link power levels. Truly smooth deployment. :-D
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character.
491744
462440
L***s
Sweden
Verified
Purchase
5 .0
2025-03-19
Added this CWDM module to our corporate storage network uplink. Both TX and RX power levels matched our expected budget perfectly. Simple, effective, and reliable optical transceiver module.
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character.
491744
462446
J***k
Bangladesh
Verified
Purchase
4 .0
2025-02-02
Product performance is great on our 20km single-mode link. Delivery took one extra business day because the carrier held the package at the local depot. Not a major issue, just plan ahead.
Germany · English · EUR
