SFP40K-CW1570 operates as a 1G SFP transceiver tuned to the 1570nm CWDM grid, housing a DFB laser and a PIN photodiode for optical-to-electrical conversion. It supports SMF transmission runs up to 40km, with link budgets calibrated for standard single-mode fibers. Real-time digital diagnostic monitoring (DDM) is embedded, providing instant readouts of temperature, supply voltage, bias current, TX power, and RX power.
HPE Part Number
SFP40K-CW1570
Vendor Name
LINK-PP
Form Factor
SFP
Max Data Rate
1.25Gbps
Wavelength
1570nm
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-CW1570 Compatible LINK-PP 1.25G SFP
HPE SFP40K-CW1570 Compatible LINK-PP integrates a 1570nm CWDM laser, a 40km reach, and a duplex LC interface into a standard 1G SFP transceiver. It supports single-mode fiber transmission and includes real-time digital diagnostic monitoring for operational visibility. This module covers all essential physical-layer specifications for dependable point-to-point links.
The SFP40K-CW1570 optical module features a hot-pluggable SFP footprint that allows installation or replacement without powering down the host system. It is fully compliant with the SFP MSA, guaranteeing mechanical and electrical interoperability with a wide range of networking equipment. Its standardised pinout and control interface simplify system integration.
SFP40K-CW1570: 1 Gbps Connectivity for Inter-Site Fiber Routes
For inter-site fiber routes, this transceiver delivers a stable 1Gbps data rate over extended spans. It provides enough bandwidth for common campus, metropolitan, or enterprise backbone connections between distant facilities.
SFP40K-CW1570 Module with CWDM Technology for Fiber Efficiency
CWDM technology allows this module to occupy a designated channel in a multi-wavelength transport system. By using coarse wavelength division multiplexing, it helps consolidate several services onto a single fibre pair, thereby increasing overall fibre utilisation without adding new cables.
SFP40K-CW1570 Module with 1570nm Wavelength
The 1570nm emission wavelength is part of the standard CWDM grid, ensuring compatibility with common multiplexers and demultiplexers. This specific band experiences relatively low attenuation in single-mode fibre, contributing to the module’s effective reach.
SFP40K-CW1570 Module Supporting 40km Transmission
Transmission distances of up to 40km are achievable over single-mode fibre with this module. Its optical power budget and receiver sensitivity are tuned to maintain a clean signal across that distance under typical link conditions.
SFP40K-CW1570 Module with Duplex LC Interface
The duplex LC connector provides the physical interface for separate transmit and receive fibre paths. This widely adopted connector ensures quick, secure mating with most patch panels and optical distribution frames.
SFP40K-CW1570 Module with DDM for Real-Time Monitoring
Built-in digital diagnostic monitoring (DDM) offers real-time access to critical operating parameters. Compatible with SFF-8472 digital diagnostics, it reports temperature, supply voltage, laser bias current, and both TX/RX optical power levels directly through the management interface.
The SFP40K-CW1570 1G SFP transceiver meets strict international manufacturing and safety standards. It holds major certifications including ISO 9001, CE, RoHS, and FCC for global market compliance.
Every optical module undergoes rigorous factory testing for performance, Signal Integrity, and optical output stability. These tests ensure long-term durability and low error rates during continuous operation.
SFP40K-CW1570 Quality Certifications
The product complies with industry standards to ensure hardware reliability and safe operation. These compliance credentials verify low electromagnetic emissions and eco-friendly material usage.
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-CW1570 Certified for Reliable Host-Device Compatibility
The module is fully programmed and tested to work seamlessly across major switch and router platforms. It delivers reliable plug-and-play network performance without causing system compatibility errors.
Rigorous Testing Ensures Reliable SFP Performance
Each SFP40K-CW1570 1G SFP CWDM module completes systematic performance checks to confirm line-rate transmission and structural hardware integrity. Learn more about these procedures at the LINK-PP Test Support Center.
Optical Spectrum Test
Measure exact channel wavelengths to preserve clean signal paths across fiber runs.
Eye Pattern Test
Evaluate optical waveform clarity to confirm clear transceiver noise margins and timing.
Bit Error Rate Test
Check total packet delivery accuracy to maintain zero packet drops over time.
Temperature Test
Validate operational heat resistance under harsh thermal swings in field deployments.
Product Shipping for HPE SFP40K-CW1570 Compatible LINK-PP 1.25G SFP
Each order is carefully prepared and dispatched to ensure prompt transit. Secure packaging practices protect module integrity throughout the entire shipping process.
Anti-Static Protective Packaging
Prevent electrostatic discharge damage during handling using specialized protective packaging.
Shock-Resistant Transport Protection
Protect optical components from physical impact and vibration during transit route movements.
Fast Order Processing and Dispatch
Process verified customer purchases quickly to enable immediate carrier dispatch preparation.
Global Logistics and International Delivery
Deliver orders safely across worldwide destination networks using reliable international shipping channels.
Plug the SFP40K-CW1570 CWDM module into a compatible SFP slot and link it using single-mode duplex LC cabling. Configured for 1570nm CWDM transmission, this module optimizes bandwidth over inter-site fiber routes, enterprise campus networks, and point-to-point regional links.
SFP40K-CW1570 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-CW1570 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. We pre-program and verify the EEPROM memory map of the LS-CW571G-40C specifically for Dell Networking OS before delivery, ensuring seamless plug-and-play recognition, accurate DDM telemetry, and stable link establishment on your Dell PowerSwitch ports. By
admin on
2026-03-15
A:
The LS-CW571G-40C is rated for a 0°C to 70°C case operating temperature, so an ambient rack temperature of 55°C is generally workable provided there is normal airflow. The built-in DDM also lets you track real-time internal module temperatures and configure warning alerts in your switch before heat impacts optical performance. By
admin on
2026-01-08
A:
The module complies with the standard 20nm CWDM channel spacing with a typical center wavelength tolerance of +/- 6.5nm, ensuring clear passband alignment through passive MUX filters. By
admin on
2025-11-22
A:
Yes, the LS-CW571G-40C module features a standard hot-pluggable SFP footprint, allowing insertion and removal during live system operations with zero downtime. By
admin on
2025-06-25
The 1570nm CWDM wavelength fit our existing Mux perfectly, and the 40km reach gives us tons of headroom even though we only run about 25km. Duplex LC plugged in clean, DDM works, and they've been rock solid for two months now.
Please write comments with more than three
character.
492372
453367
E***s
Morocco
Verified
Purchase
5 .0
2026-03-14
We integrated the LS-CW571G-40C into our metro distribution network to utilize channel 1570nm on our existing 16-channel passive CWDM Mux/Demux topology. The 40km optical link budget (DFB laser transmitter paired with a high-sensitivity PIN receiver) yielded an actual -15.2dBm received optical power over our 31km OS2 SMF span, providing ample 6dB margin against dirty patch terminations. The DDM data accurately tracks laser bias current, internal module temperature, supply voltage, and optical TX/RX power levels on our NMS dashboard.
Please write comments with more than three
character.
492372
453370
F***e
Nepal
Verified
Purchase
5 .0
2026-02-10
I tested one of these CWDM modules before buying more, and it passed cleanly. Over a 35km single-mode span at 1.25G, the link stayed stable all day, no drops, no CRC errors. The 1570nm wavelength locked in tight, which matters when you're mixing channels through a CWDM MUX. DDM reporting is accurate and the module reads correctly in the switch. I even left one in a warm outdoor cabinet for a week and it held up fine within the commercial range.
Please write comments with more than three
character.
492372
453372
O***e
Turkey
Verified
Purchase
5 .0
2025-12-30
Added this 1570nm CWDM 1G SFP to our passive 8-channel multiplexer to light up a new campus building about 30km away. The duplex LC connection clicked securely into place, and optical budget headroom was well over 5dB. Super smooth install.
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character.
492372
453363
D***n
Bangladesh
Verified
Purchase
4 .0
2025-12-12
Decent 1G SFP for the money. The 1570nm wavelength and 40km reach are as advertised, but I wish the manual had more detail on the SFF-8472 registers. Works, though.
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492372
453369
L***k
Denmark
Verified
Purchase
5 .0
2025-10-15
We needed a dedicated 1570nm drop for an enterprise SAN replication link. These SFP modules linked up immediately with our LC patch cables and maintain very low thermal dissipation inside the rack. Excellent build quality!
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character.
492372
453362
R***r
Belarus
Verified
Purchase
5 .0
2025-08-21
Cost-effective alternative to overpriced OEM optics. The MSA-compliant EEPROM coding was recognized by our distribution switches immediately, and real-time DDM diagnostics are completely accurate. Good overall buy!
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492372
453366
H***k
Maldives
Verified
Purchase
5 .0
2025-07-02
We utilized multiple units of this 1G 1570nm CWDM 40km SFP transceiver for a campus aggregation upgrade connecting several remote server rooms across town. The transmitter operates at a precise 1570nm center wavelength with an impressive side-mode suppression ratio, eliminating any adjacent channel crosstalk through our passive optical filters. Link synchronization was instantaneous, duplex LC alignment is precise, and real-time DDM telemetry displays accurate fiber degradation alerts before packet loss can occur. Truly impressive performance!
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character.
492372
453371
A***k
Lithuania
Verified
Purchase
5 .0
2025-04-16
Deployed a batch of 30 across our data center and every one came up without a single dead module. SFF-8472 DDM reporting is accurate, which makes monitoring way easier. Commercial temp range is fine for our indoor racks. Would buy again.
Please write comments with more than three
character.
492372
453361
U***t
Hungary
Verified
Purchase
5 .0
2025-03-08
Excellent 1G CWDM SFP transceiver. We tested it on our lab patch panel and then pushed it into production over a 32km single-mode fiber run. Wavelength accuracy on the 1570nm ITU grid channel is spot on.
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