SFP40K-CW1590 operates as a 1G CWDM SFP at 1590nm, employing a DFB transmitter and a PIN receiver for 40km reach on single-mode fiber. The transceiver features built-in real-time DOM functions that report optical parameters via a 2-wire serial interface, with accuracy of ±3dB for optical power monitoring. Its thermal specification is confined to the commercial range (0 to +70°C ambient), and it meets reliability requirements for long-haul coarse wavelength applications.
HPE Part Number
SFP40K-CW1590
Vendor Name
LINK-PP
Form Factor
SFP
Max Data Rate
1.25Gbps
Wavelength
1590nm
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 HPE SFP40K-CW1590 Compatible LINK-PP 1.25G SFP
HPE SFP40K-CW1590 Compatible LINK-PP module is a commercial-grade 1G SFP transceiver that combines CWDM 1590nm, 40km reach, single-mode fibre, duplex LC, and digital optical monitoring in one compact module. It follows the SFP Multi-Source Agreement and supports hot-pluggable installation for straightforward maintenance. All its key attributes are designed to deliver reliable point-to-point connectivity over metropolitan and regional fibre links.
This optical module features a hot-pluggable SFP footprint that allows insertion and removal without powering down the host system. It is fully compliant with the SFP Multi-Source Agreement, ensuring mechanical and electrical compatibility with a wide range of networking equipment.
SFP40K-CW1590: 1 Gbps Connectivity for Point-to-Point MAN Links
The transceiver operates at a line rate of 1Gbps, making it suitable for point-to-point metropolitan area network links. It provides sufficient bandwidth for Gigabit Ethernet and Fiber Channel services over city-scale distances.
SFP40K-CW1590 Module with CWDM Technology for Fiber Efficiency
The CWDM technology incorporated in this module enables multiple wavelengths to be multiplexed onto a single fibre pair. This approach significantly increases fibre utilisation and helps operators reduce the need for additional fibre deployment.
SFP40K-CW1590 Module with 1590nm Wavelength
The 1590nm wavelength channel is allocated within the standard CWDM grid. This module operates precisely at that wavelength, which is well suited for low-loss transmission and minimises chromatic dispersion on the single-mode fiber.
SFP40K-CW1590 Module Supporting 40km Transmission
This 1G SFP module supports fibre runs of up to 40km over standard single-mode fiber without the need for intermediate repeaters. It maintains a stable optical budget that comfortably covers typical attenuation and connector losses encountered in regional network segments.
SFP40K-CW1590 Module with Duplex LC Interface
The duplex LC connector provides separate transmit and receive ports in a single, industry-standard housing. It ensures secure and polarised fibre connections, simplifying cable management and polarity identification during installation.
SFP40K-CW1590 Module with DOM for Real-Time Monitoring
The DOM (Digital Optical Monitoring) function offers real-time visibility into the module’s operating conditions. It is compatible with SFF-8472 digital diagnostics, providing readouts of operating temperature, supply voltage, laser bias current, and transmitted/received optical power for proactive system management.
The SFP40K-CW1590 1G SFP optical module complies with ISO 9001, CE, RoHS, and FCC standards to ensure top-tier safety and environmental performance. These global recognitions highlight our dedication to consistent manufacturing quality and sustainable production practices.
Every transceiver undergoes strict optical and temperature endurance tests to verify signal stability under harsh conditions. This comprehensive screening guarantees flawless performance and zero packet loss during continuous operation.
SFP40K-CW1590 Quality Certifications
The module holds official compliance certifications that confirm adherence to strict optical and electrical hardware specifications. These standardized credentials verify product durability and reduce hardware failure risks in enterprise network deployments.
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.
SFP40K-CW1590 Certified for Reliable Host-Device Compatibility
Each module is pre-coded and fully validated on main switches and routers to support hassle-free integration. It delivers true plug-and-play functionality without triggering system errors or vendor lock-in issues.
Rigorous Testing Ensures Reliable SFP Performance
Every SFP40K-CW1590 SFP optical transceiver undergoes strict physical and signal verification to guarantee stable line-rate transmission in production networks. Discover the complete validation methodology at the LINK-PP Test Support Center.
Optical Spectrum Test
Measure central wavelengths and spectral width to confirm compliance with optical standards.
Eye Pattern Test
Analyze signal waveform clarity and jitter parameters to prevent digital optical distortion.
Bit Error Rate Test
Verify zero packet loss during continuous line-rate data transmission across full distance spans.
Temperature Test
Monitor optical stability across extreme thermal environments to ensure field reliability.
Product Shipping for HPE SFP40K-CW1590 Compatible LINK-PP 1.25G SFP
We manage every order with efficient logistics and standardized packaging to protect your SFP40K-CW1590 SFP module during transit. Our streamlined fulfillment process guarantees timely delivery for enterprise deployments worldwide.
Anti-Static Protective Packaging
Shield optical components against electrostatic discharge using specialized packaging.
Shock-Resistant Transport Protection
Safeguard transceivers against physical impacts during handling with reinforced enclosures.
Fast Order Processing and Dispatch
Prepare and dispatch orders quickly to minimize lead times for critical network projects.
Global Logistics and International Delivery
Provide end-to-end tracking for international shipments to ensure smooth cross-border delivery.
Deploying the 1590nm CWDM 1G SFP in Point-to-Point MAN Links requires connecting duplex LC patch cords to corresponding CWDM MUX/DEMUX ports. Ensure exact wavelength pairing across transceivers before link activation. Hot-swapping capabilities allow clean, interruption-free hardware integration into enterprise optical infrastructure.
SFP40K-CW1590 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 SFP40K-CW1590 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. It requires a standard single +3.3V power feed from the host SFP port and is engineered for low power dissipation to prevent overheating inside dense switch stacks. By
admin on
2026-05-07
A:
Yes. The module supports both standard Gigabit Ethernet (1.25Gbps) and 1.063Gbps Fibre Channel rates, making it fully suitable for your legacy SAN storage links. By
admin on
2026-03-08
A:
Yes. As long as each transceiver uses a dedicated wavelength on your CWDM Mux/Demux, multiple independent 1G links can run simultaneously across one single-mode fiber pair without interference. By
admin on
2025-10-05
A:
Yes, the LS-CW591G-40C module features real-time Digital Optical Monitoring (DOM) compliant with SFF-8472, allowing your system to track Tx/Rx power, supply voltage, laser bias current, and operating temperature. By
admin on
2025-09-21
A:
No, provided the operating temperature remains within the 0–70°C rated range; the DFB laser's wavelength drift stays within its specified tolerance, ensuring the signal remains inside the CWDM filter passband and avoiding link errors. By
admin on
2025-02-05
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492424
453175
T***s
South Africa
Verified
Purchase
5 .0
2026-06-02
I ran these through a proper burn-in before rolling them out. Over a full 36km spool of single-mode fiber, the link stayed perfectly stable with no errors, and the DOM readings matched my optical power meter closely. The 1590nm CWDM channel is clean and consistent, and the duplex LC connector seated firmly in my patch panel. For a commercial-grade 1G SFP, this is a dependable performer. We've had a batch running on our campus network for weeks now with zero issues.
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492424
453186
B***h
Sweden
Verified
Purchase
5 .0
2026-05-11
Solid 1G CWDM SFP modules. We use channel 1590nm to isolate dedicated storage traffic across our distribution frames. Temperatures stay at ~43°C in standard climate-controlled racks. Excellent alternative to overpriced first-party optics! (•‿•)
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492424
453178
Z***r
Russian Federation
Verified
Purchase
5 .0
2026-04-05
We put these into our campus fiber ring and they've been running non-stop for about two months now. The 1590nm CWDM wavelength lets us carry several links over the same fiber pair using a MUX, which saved us a lot of cabling. The DOM telemetry is accurate and matches what the switch reports, so monitoring is easy. The 40km reach on single-mode fiber is more than enough for our site-to-site links. Duplex LC connectors seated cleanly in every patch panel we used. Honestly, for a commercial-grade SFP, this thing just works and keeps working. Very happy with the purchase.
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492424
453184
N***r
United States
Verified
Purchase
5 .0
2026-03-21
Replaced aging optics on a 30km municipal link. The DFB laser output on this 1590nm CWDM module provides ample optical budget through three splice trays. Highly recommended for network engineers on a budget.
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492424
453180
T***e
United Kingdom
Verified
Purchase
5 .0
2026-02-16
Deployed these 1G SFP modules across our campus fiber ring. The 1590nm wavelength lets us run multiple links over the same fiber pair through a CWDM MUX, and the DOM telemetry matches the switch's DOM readout. Great value for a 1G CWDM SFP module.
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492424
453173
E***k
Germany
Verified
Purchase
5 .0
2025-09-02
Used these 1G 1590nm 40km SFP transceivers to replace legacy single-mode modules. SFF-8472 compliance is spot on, allowing our monitoring system to poll optical stats via SNMP smoothly.
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492424
453176
M***g
Norway
Verified
Purchase
5 .0
2025-07-25
Put these optical modules in our office fiber backbone between floors. The CWDM SFP linked to our core switch with zero drama, and DOM readings are consistent. Would order again.
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492424
453183
V***s
Spain
Verified
Purchase
5 .0
2025-06-30
Checked the 1590nm channel with an optical spectrum analyzer—very sharp center wavelength with minimal drift. Real-time DOM telemetry updates voltage, temperature, and optical power accurately on the web management UI.
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492424
453179
X***e
Indonesia
Verified
Purchase
4 .0
2025-06-12
Performance is great, no complaints on this CWDM SFP. Shipping was slower than I hoped and the outer carton showed some wear, but the module inside was fine. 4 stars for the delivery experience, not the product.
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492424
453174
O***r
Philippines
Verified
Purchase
5 .0
2025-02-28
Migrated our off-site backup SAN connection to a dedicated CWDM wavelength. The 1590nm channel was chosen to sit adjacent to our existing 1570nm uplink. Spectral isolation on this module is great—no adjacent channel crosstalk detected on our passive DEMUX. The EEPROM table is coded accurately, allowing immediate MSA auto-negotiation. DOM temperature thresholds are well calibrated, keeping the module cool and stable even in dense top-of-rack deployments. Truly top-tier engineering for commercial-grade optics.
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492424
453185
I***e
France
Verified
Purchase
5 .0
2025-01-15
Ordered a batch of these 1G 1590nm CWDM optics to add another gigabit uplink over existing dark fiber. The duplex LC patch seated perfectly, and DOM diagnostics show steady -3.5dBm Tx power. Exactly what our infrastructure team needed.
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