EX-SFP-GE40KCW1290 represents a 1290nm CWDM SFP optical module built for network links requiring data speeds up to 1.25Gbps. Incorporating a high-precision DFB laser and PIN photodiode architecture, it effectively bridges transmission spans up to 40km on single-mode fiber. Integrated real-time digital optical monitoring allows continuous system health tracking under commercial temperature conditions from 0 to +70°C.
Juniper Part Number
EX-SFP-GE40KCW1290
Vendor Name
LINK-PP
Form Factor
SFP
Max Data Rate
1.25Gbps
Wavelength
1290nm
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 Juniper EX-SFP-GE40KCW1290 Compatible LINK-PP 1.25G SFP
EX-SFP-GE40KCW1290 is a commercial-grade 1G CWDM SFP transceiver designed for efficient 40km single-mode fiber links. It combines a 1290nm wavelength, duplex LC interface, and SFP MSA compliance to support stable enterprise backbone connectivity. Additionally, the real-time DOM feature allows continuous monitoring of critical optical parameters across the network.
This transceiver features a hot-pluggable SFP footprint that simplifies field installation and maintenance without network downtime. Built in strict compliance with the SFP multi-source agreement, the module ensures seamless physical and electrical compatibility across standard networking hardware.
EX-SFP-GE40KCW1290: 1 Gbps Connectivity for Enterprise Optical Backbones
Delivering a steady 1Gbps line rate, the device provides steady data throughput for campus aggregation and inter-building switches. It serves as an essential bridging component for optical backbones that demand stable Gigabit Ethernet connections.
EX-SFP-GE40KCW1290 Module with CWDM Technology for Fiber Efficiency
Coarse Wavelength Division Multiplexing enables multiple data channels to run over a shared single-mode fiber pair. By utilizing specific wavelength channels, network operators can significantly expand bandwidth capacity without laying additional optical cabling.
EX-SFP-GE40KCW1290 Module with 1290nm Wavelength
Operating at a precise 1290nm center wavelength, the optical transmitter fits cleanly into standard CWDM grid channel configurations. This targeted wavelength assignment prevents signal overlap and supports low-crosstalk multiplexed transmission.
A built-in DFB laser paired with a PIN receiver enables reliable optical signals to span up to 40km over single-mode fiber. This extended reach makes it ideal for regional campus connections and point-to-point links between distant facilities.
EX-SFP-GE40KCW1290 Module with Duplex LC Interface
The industry-standard duplex LC connector ensures solid mechanical coupling with existing fiber patch cables. Its compact form factor maintains high port density on switch line cards while delivering low insertion loss.
EX-SFP-GE40KCW1290 Module with DOM for Real-Time Monitoring
Digital Optical Monitoring functionality is fully compatible with the SFF-8472 standard for real-time diagnostic reporting. System administrators can continuously track critical operational metrics such as optical power, supply voltage, bias current and internal temperature.
This EX-SFP-GE40KCW1290 1G SFP transceiver holds major international quality and compliance certifications, including ISO 9001, CE, RoHS, and FCC. These approvals ensure that every module meets strict global standards for performance, safety, and environmental protection.
Each 1G CWDM SFP module undergoes rigorous factory testing, including visual checks, optical spectrum measurements, and bit error rate tests. This comprehensive process guarantees high stability and optimal performance before the product is shipped.
EX-SFP-GE40KCW1290 Quality Certifications
These industry-standard certifications prove that the module adheres to top-tier manufacturing processes and strict safety guidelines. They provide with strong assurance regarding long-term reliability and product quality.
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.
EX-SFP-GE40KCW1290 Certified for Reliable Host-Device Compatibility
The EX-SFP-GE40KCW1290 module is thoroughly tested on various original brand switches and networking hardware to ensure seamless plug-and-play operation. This verified compatibility prevents network errors and guarantees stable communication across different hosts.
Rigorous Testing Ensures Reliable SFP Performance
Every EX-SFP-GE40KCW1290 SFP module undergoes full-scope performance validation to ensure stable data transmission and zero packet drop. To learn more about our testing standards, visit the LINK-PP Test Support Center.
Optical Spectrum Test
Verify central wavelength and spectral width for stable signal transmission.
Eye Pattern Test
Analyze signal quality and noise margins for optimal optical performance.
Bit Error Rate Test
Measure transmission accuracy to ensure reliable, zero-loss data framing.
Temperature Test
Ensure reliable link performance across extreme temperature ranges.
Product Shipping for Juniper EX-SFP-GE40KCW1290 Compatible LINK-PP 1.25G SFP
We use secure packaging and reliable transit methods to protect every EX-SFP-GE40KCW1290 1G SFP module. Our international delivery network ensures fast and safe order fulfillment worldwide.
Anti-Static Protective Packaging
Protect internal electronic parts from static electricity during shipping.
Shock-Resistant Transport Protection
Safeguard optical modules from rough handling and physical drops.
Fast Order Processing and Dispatch
Prepare and ship orders promptly to shorten overall wait times.
Global Logistics and International Delivery
Deliver products seamlessly to customers around the whole world.
Plug the EX-SFP-GE40KCW1290 1G SFP transceiver into the host port and connect a clean duplex LC optical cable to establish a stable link. Operating at 1290nm, this CWDM module is ideal for enterprise optical backbones, enabling efficient multi-channel data aggregation across high-density corporate core networks.
EX-SFP-GE40KCW1290 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 EX-SFP-GE40KCW1290 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:
DOM is fully supported via the standard I²C interface per SFF-8472. Once coded for Dell Networking, the LS-CW291G-40C module provides full diagnostic telemetry — including TX/RX optical power, operating temperature, laser bias current, and supply voltage — directly accessible via standard CLI commands or your SNMP network management platform. By
admin on
2026-03-16
A:
Yes, the built-in DFB laser operates on the standard 1290nm CWDM grid, ensuring clean pass-through and low insertion loss across passive multiplexers. By
admin on
2025-10-04
A:
The DFB laser in this CWDM SFP module is calibrated to stay well within standard CWDM channel passbands across the entire 0°C to 70°C case temperature window. As long as the internal rack ambient stays within this envelope, your CWDM multiplexer will maintain stable optical lock. By
admin on
2025-05-25
Needed a CWDM 1290nm module for a base station backhaul link and this delivered. TX power is right in spec, and the PIN receiver picks up clean signal at distance. Happy with the purchase.
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491893
458383
D***n
India
Verified
Purchase
5 .0
2026-05-16
We deployed these 40km SFP optical transceivers on a critical inter-building single-mode fiber trunk bridging hardware across different server rooms. The modules hot-swapped smoothly, established full-duplex Gigabit links immediately, and exposed complete DOM data via standard SNMP polling. The sturdy metal casing and durable LC interface ensure reliable physical connections in high-density patch environments. It delivers carrier-grade transmission stability and full hardware compatibility at a fraction of the usual expense. (•̀ᴗ•́)و
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491893
458398
E***s
Singapore
Verified
Purchase
5 .0
2026-03-06
Used this 1290nm SFP module to link our main server room to a detached backup storage building. Real-time telemetry works great on our dashboard, and data transfer speeds are maxed out without errors.
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491893
458389
M***e
United Kingdom
Verified
Purchase
5 .0
2026-02-08
Connected two office branches over leased single-mode fiber. Optical power levels are well above the minimum threshold, even through several patch panels along the path.
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491893
458394
V***e
Spain
Verified
Purchase
5 .0
2026-01-29
We upgraded several wireless tower backhauls using these 1290nm 40km optics over standard duplex LC single-mode fiber runs. Both the edge routers and central aggregation switches recognized the modules instantly with full DOM diagnostics available in the CLI. The link has maintained 100% uptime through fluctuating weather conditions and continuous peak utilization. It offers clear optical transmission, robust latching mechanics, and hassle-free compatibility for real-world ISP operations.
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491893
458384
J***y
Finland
Verified
Purchase
5 .0
2025-12-23
We chose this 40km CWDM module to carry synchronous data backup traffic between our primary facility and a secondary replication site over dark fiber. The optical link initialized on first insertion with accurate DOM threshold telemetry reporting directly to our network monitoring dashboard. Zero packet drops, consistent microsecond-level latency, and stable power draw make it ideal for mission-critical storage links. It provides dependable performance and seamless compatibility across all our enterprise distribution switches.
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character.
491893
458400
J***n
Japan
Verified
Purchase
5 .0
2025-12-10
Slotted this 1290nm CWDM module into our 8-channel optical multiplexer for an inter-building trunk. Link came up right away with clean optical power and solid DOM readings. Exactly what we needed for our dark fiber upgrade!
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491893
458386
E***d
Italy
Verified
Purchase
5 .0
2025-11-20
Replaced an older optic with this 40km CWDM SFP module during our routine maintenance window. Synced at full 1Gbps speed within seconds. Smooth and painless installation.
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491893
458393
C***m
France
Verified
Purchase
5 .0
2025-10-31
Running daily production data across a 28km single-mode fiber line between two facilities. Temperatures remain cool inside the rack, and the link has been 100% stable since day one.
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character.
491893
458388
A***e
Netherlands
Verified
Purchase
5 .0
2025-09-28
Installed this SFP optical module on a dedicated 22km fiber run handling high-definition security camera streams. It handles continuous heavy traffic without frame drops or overheating issues.
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character.
491893
458391
E***m
Denmark
Verified
Purchase
5 .0
2025-08-19
For a 40km single-mode CWDM SFP at this price, it's hard to beat. Linked up immediately with our switch, and the DOM monitoring is reliable. Solid value.
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character.
491893
458397
S***t
Romania
Verified
Purchase
4 .0
2025-07-14
The transceiver connected instantly across our 25km single-mode run with perfect link stability. However, the outer cardboard box arrived a bit crushed from courier transit. Luckily, the internal protective packaging kept the optical module completely safe.
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491893
458402
B***e
South Africa
Verified
Purchase
5 .0
2025-07-04
The duplex LC connectors arrived perfectly clean under inspection. Plugged directly into our distribution switch, and the real-time DOM stats show great signal levels and steady voltage. Very pleased with the quality!
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491893
458387
A***h
United States
Verified
Purchase
5 .0
2025-06-16
Ordered a batch for our data center and all 1G CWDM modules came through with correct EEPROM and linked up on the first try with our gear. No compatibility headaches at all.
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491893
458395
A***p
Mexico
Verified
Purchase
5 .0
2025-05-01
Adding this 1290nm CWDM channel allowed us to expand bandwidth without running new fiber cables. No interference with neighboring channels, and we get full Gigabit throughput around the clock.
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character.
491893
458390
S***g
Republic of Korea
Verified
Purchase
5 .0
2025-04-25
Installed these 1290nm CWDM SFP transceivers to link two business parks over an unamplified 35km single-mode fiber run. Even after factoring in insertion losses from multiple intermediate patch points, the link maintained a healthy optical margin with perfect bit error rate test results. The transceivers ran cool and quiet throughout our extended burn-in testing, proving completely stable under maximum network traffic. The plug-and-play installation and solid build quality make this our go-to optic for long-range deployments.
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491893
458385
A***e
Canada
Verified
Purchase
5 .0
2025-01-05
The metal housing and bail latch feel very solid, locking securely into the SFP cage. Great transmit reach over 30km of single-mode cable with plenty of margin to spare.
United Kingdom · English · GBP
