CWDM-SFP-1330-20 CWDM SFP module is built for 1.25Gbps network links, pairing a 1330nm DFB laser and PIN photo detector to transmit signals across single-mode fiber up to 20km. It includes real-time optical diagnostics for easy system monitoring and runs reliably in commercial temperatures from 0 to +70°C.
Cisco Part Number
CWDM-SFP-1330-20
Vendor Name
LINK-PP
Form Factor
SFP
Max Data Rate
1.25Gbps
Wavelength
1330nm
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/DOM
Supported
Operating Temperature Range
0 to 70°C
Protocols
SFP MSA、SFF-8472
Key Features of Cisco CWDM-SFP-1330-20 Compatible LINK-PP 1G SFP
Cisco CWDM-SFP-1330-20 Compatible LINK-PP combines essential optical specifications into a commercial-grade 1G CWDM transceiver designed for reliable 1330nm transmission. It delivers stable 20km single-mode connectivity through a standard duplex LC interface while integrating real-time digital optical diagnostics.
This transceiver features a hot-pluggable SFP footprint that allows quick installation and maintenance without powering down host switches. Built in full compliance with the standard SFP MSA, it ensures broad physical and electrical compatibility across multi-vendor networking hardware.
CWDM-SFP-1330-20: 1 Gbps Connectivity for Point-to-Point Metro Links
Gigabit Ethernet line rates up to 1.25Gbps provide steady, non-blocking throughput across point-to-point metro architectures. These dedicated data channels make it an effective solution for connecting enterprise campus buildings and metropolitan edge routing nodes.
CWDM-SFP-1330-20 Module with CWDM Technology for Fiber Efficiency
Coarse Wavelength Division Multiplexing enables multiple distinct data streams to travel across a shared single-mode strand. This spectral separation maximizes existing fiber capacity and eliminates the need to run costly new optical cabling.
CWDM-SFP-1330-20 Module with 1330nm Wavelength
Operating at the specific 1330nm optical wavelength channel ensures smooth integration into standard ITU-T CWDM grid multiplexers. The integrated DFB transmitter maintains precise spectral alignment to prevent channel crosstalk across adjacent wavelengths.
Single-mode fiber reach extends up to 20km, providing ample optical power budget for intermediate campus and regional spans. Its optical receiver ensures low bit error rates across long spans without requiring external signal amplification.
CWDM-SFP-1330-20 Module with Duplex LC Interface
An industry-standard duplex LC optical receptacle provides a secure, compact mechanical connection for network patching. The dual-fiber port design simplifies polarity management and pairs directly with conventional LC single-mode patch cords.
CWDM-SFP-1330-20 Module with DOM for Real-Time Monitoring
Digital optical monitoring functions provide live telemetry compatible with the SFF-8472 diagnostic standard. Network administrators can continuously track key operating parameters such as optical Rx/Tx power, laser bias current, temperature, and supply voltage.
Cisco CWDM-SFP-1330-20 Compatible LINK-PP 1G CWDM SFP module meets strict international standards with certifications including ISO 9001, CE, RoHS, and FCC to ensure safety and environmental compliance.
Every optical module undergoes rigorous physical and optical parameter testing before shipment to guarantee stable signal transmission.
CWDM-SFP-1330-20 Quality Certifications
Comprehensive quality approvals verify that the module delivers safe, compliant operation in commercial 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-1330-20 Certified for Reliable Host-Device Compatibility
Comprehensive switch-port interoperability testing guarantees true plug-and-play integration across leading vendor platforms, ensuring seamless host-device recognition and stable performance.
Rigorous Testing Ensures Reliable SFP Performance
Every CWDM-SFP-1330-20 SFP transceiver undergoes thorough validation to guarantee stable optical transmission across all live network environments. To explore our complete quality verification standards and methodologies, visit the LINK-PP Test Support Center.
Optical Spectrum Test
Measure wavelength accuracy and spectral width for stable channel alignment.
Eye Pattern Test
Evaluate optical signal integrity and waveform quality to minimize distortion.
Bit Error Rate Test
Validate packet transmission accuracy and data consistency under full load.
Temperature Test
Assess thermal stability and component reliability across standard operating ranges.
Product Shipping for Cisco CWDM-SFP-1330-20 Compatible LINK-PP 1G SFP
Cisco CWDM-SFP-1330-20 Compatible LINK-PP 1G SFP transceivers follow strict handling protocols from our warehouse straight to your networking facility. Our streamlined fulfillment workflow ensures swift transit while preserving the physical and optical integrity of every product.
Anti-Static Protective Packaging
Neutralize harmful electrical charges to keep delicate internal circuitry safe.
Shock-Resistant Transport Protection
Absorb movement stress to safeguard precision internal laser alignment mechanisms.
Fast Order Processing and Dispatch
Accelerate warehouse handling workflows to shorten overall customer project lead times.
Global Logistics and International Delivery
Partner with reliable international freight carriers for secure worldwide delivery.
Featuring plug-and-play operation, the CWDM-SFP-1330-20 CWDM SFP transceiver installs directly into active switch ports with duplex LC single-mode patch cords for instant deployment. It provides stable 1Gbps connectivity across 1330nm channels, making it ideal for point-to-point metro links, edge routing, and inter-building campus networks.
CWDM-SFP-1330-20 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-1330-20 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:
Modules can be stored unpowered from -40°C to +85°C in dry, non-condensing environments. Always keep the protective dust caps firmly seated inside the optical bore until the exact moment patch cords are plugged in. This protects internal DFB lenses from dust accumulation and moisture during long shelf storage. By
admin
A:
Yes, the LS-CW331G-20C module works as a standard point-to-point fiber link over single-mode fiber up to 20km without any multiplexer hardware. Just make sure both ends use matching 1330nm transceivers. By
admin
A:
No, there is no signal interference. The transceiver uses a precision DFB laser with a narrow spectral width centered at 1330nm. Standard CWDM channel filters provide high isolation between channels, preventing light leakage into adjacent 1310nm wavelengths. By
admin
Needed this specific 1330nm wavelength to expand network capacity over leased dark fiber. Optical budget is generous and easily handles all our patch panel connections.
Please write comments with more than three
character.
491714
493296
S***z
Ukraine
Verified
Purchase
5 .0
2026-03-11
Replaced our old failed transceivers with these modules on our warehouse uplinks. The real-time DOM monitoring makes it very easy to track optical power levels directly from our network dashboard. :D
Please write comments with more than three
character.
491714
493295
E***s
Libyan Arab Jamahiriya
Verified
Purchase
5 .0
2025-10-02
Used this CWDM SFP module for a campus surveillance aggregation network. The 1330nm CWDM wavelength let us keep camera traffic separate from other services on the same fiber route. It has been stable at 1Gbps with no CRC errors after installation.
Please write comments with more than three
character.
491714
493306
E***h
Ukraine
Verified
Purchase
5 .0
2025-09-06
Broad hardware compatibility made deployment effortless across our core switching racks. Saved our IT department substantial budget compared to original factory optics.
Please write comments with more than three
character.
491714
493300
S***s
Sweden
Verified
Purchase
5 .0
2025-08-04
This is a practical 20km CWDM SFP for low-density metro extension work. We tested it on a 14km route with several patch panels and measured healthy receive levels. The PIN receiver sensitivity gave enough operating headroom for our link budget.
Please write comments with more than three
character.
491714
493305
N***n
Hungary
Verified
Purchase
5 .0
2025-07-18
Using these for a 13km single-mode fiber run between two corporate office branches. The connection has been rock solid with zero latency spikes or dropped frames.
Please write comments with more than three
character.
491714
493298
E***l
Libyan Arab Jamahiriya
Verified
Purchase
4 .0
2025-06-25
Performance is excellent on our 12 km single-mode fiber link. Shipping took longer than expected because the parcel sat with the carrier for two extra days, but the CWDM SFP itself installed cleanly and passed our acceptance test.
Please write comments with more than three
character.
491714
493304
S***m
Poland
Verified
Purchase
5 .0
2025-04-24
Installed four LS-CW331G-20C modules in a small campus network using duplex LC patching. The 1330nm channel fit our passive CWDM plan, while the 20km reach gave us plenty of margin for buildings around the site. Switch recognition was straightforward and the DDM diagnostics are useful during handover.
Please write comments with more than three
character.
491714
493299
M***l
Hungary
Verified
Purchase
5 .0
2025-03-29
We used these transceivers to build a dedicated off-site backup link over a 16km single-mode line. Signal loss was minimal and the link quality has been completely steady. Routine automated diagnostic checks show normal operating values every day.
Please write comments with more than three
character.
491714
493307
D***g
Spain
Verified
Purchase
5 .0
2025-02-25
Great solution for municipal camera backhaul links. Signal isolation is sharp across our fiber channels with no interference on neighboring wavelengths.
United States · English · USD
