Our corporate infrastructure policy strictly requires RoHS compliance and international laser safety certification; does this optical module meet these regulatory standards?

Yes, the LS-CW431G-40C SFP module is fully RoHS-compliant, uses an eye-safe Class 1 laser design, and adheres to all relevant international optical transceiver standards.

Can this CWDM SFP handle our 1.063Gbps SAN storage replication links as well as standard 1.25Gbps Gigabit Ethernet data traffic?

Yes, the module fully supports both 1.063Gbps Fibre Channel for storage replication links and 1.25Gbps Gigabit Ethernet data traffic seamlessly over the single-mode fiber link.

Can we route this 1430nm SFP module directly through an existing passive 8-channel or 18-channel CWDM Mux/Demux unit alongside other wavelengths?

Yes, the module utilizes a high-stability CWDM DFB laser aligned to standard ITU grid spacing, making it fully compatible with standard passive CWDM multiplexers and demultiplexers.

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LINK-PP LS-CW431G-40C 1G SFP CWDM 1430nm 40km Duplex LC DOM SMF Optical Transceiver Module

Name: LINK-PP LS-CW431G-40C 1G SFP CWDM 1430nm 40km Duplex LC DOM SMF Optical Transceiver Module
Brand: LINK-PP
SKU: 202700
Price: 43 USD
Availability: InStock
Rating: 4.9 (24 reviews)

Product: LINK-PP LS-CW431G-40C 1G SFP CWDM 1430nm 40km Duplex LC DOM SMF Optical Transceiver Module
SKU: 202700
P/N: LS-CW431G-40C
Price: $ 50
Stock: 55 in Stock
Sold: 805
Product URL: https://www.l-p.com/products/492168.htm

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Manufacture: LINK-PP P/N: LS-CW431G-40C SKU: 202700

Compatible:: Cisco; LINK-PP; Alcatel-Lucent; Arista; Brocade; Dell; Extreme; H3C; HPE; HW; Juniper; Netgear

Wavelength:: 1270nm; 1290nm; 1310nm; 1330nm; 1350nm; 1370nm; 1390nm; 1410nm; 1430nm; 1450nm; 1470nm; 1490nm; 1510nm; 1530nm; 1550nm; 1570nm; 1590nm; 1610nm

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LINK-PP LS-CW431G-40C 1G SFP Specifications

LS-CW431G-40C provides 1.25Gbps data capability as a 1430nm CWDM SFP module, built with a DFB laser source and a PIN photodiode detector. It supports 40km reach over standard single-mode fiber and features built-in digital optical monitoring for real-time performance tracking. The module is rated for 0 to +70°C ambient operation.

LINK-PP Part Number	LS-CW431G-40C	Vendor Name	LINK-PP
Form Factor	SFP	Max Data Rate	1.25Gbps
Wavelength	1430nm	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 LINK-PP LS-CW431G-40C 1G SFP

LINK-PP LS-CW431G-40C is a commercial-grade 1G SFP optical transceiver built for CWDM networks over single-mode fiber. It operates at the 1430nm window, supports 40km reach, and integrates duplex LC connectivity with real-time digital monitoring. This module comes in a standard hot-pluggable SFP housing, facilitating straightforward deployment.

LINK-PP LS-CW431G-40C 1G SFP Optical Module

Hot-pluggable SFP footprint allows quick installation or replacement without system interruption. Full compliance with the SFP MSA guarantees mechanical and electrical interchangeability with standard ports and cages.

LS-CW431G-40C: 1 Gbps Connectivity for Fiber Channel Trunks

Data rate reaches up to 1.25Gbps, making this module a solid fit for Fiber Channel trunk connections. This speed ensures stable and efficient data flow in storage-area network backbones.

LS-CW431G-40C Module with CWDM Technology for Fiber Efficiency

CWDM technology consolidates multiple wavelength channels onto a single fiber pair, greatly boosting fiber utilization. This approach lowers overall cabling costs while expanding network capacity.

LS-CW431G-40C Module with 1430nm Wavelength

The 1430nm wavelength is precisely aligned to the ITU-T CWDM grid. This specific channel minimizes crosstalk and allows seamless coexistence with other wavelengths in a multi-channel system.

LS-CW431G-40C Module Supporting 40km Transmission

Transmission over 40km is readily achieved over standard single-mode fiber without requiring external amplifiers. This reach capability covers typical metro ring distances and long-haul enterprise interconnections.

LS-CW431G-40C Module with Duplex LC Interface

The duplex LC interface offers a rugged and low-loss physical connection to optical patch cords. This widely adopted connector standard simplifies field termination and ensures reliable mating with existing fiber plant.

LS-CW431G-40C Module with DOM for Real-Time Monitoring

Digital optical monitoring (DOM) delivers live readings of transmit/receive optical power, laser bias current, supply voltage, and operating temperature. Its adherence to SFF-8472 guarantees that any compliant host system can retrieve and display these diagnostics in a standardised format.

LINK-PP LS-CW431G-40C 1G SFP Certification

The LS-CW431G-40C 1G SFP module meets strict global standards to ensure top-tier quality and environmental compliance. It is fully certified under ISO 9001, CE, RoHS, and FCC regulations for safe deployment worldwide.

LS-CW431G-40C Quality Testing Program

Each CWDM SFP transceiver is subjected to comprehensive optical and data-traffic tests before leaving the factory. These rigorous checks guarantee stable signal transmission and low error rates in real-world networks.

LS-CW431G-40C Quality Certifications

This module holds official industry certifications that verify adherence to international manufacturing standards. These regulatory approvals confirm that each unit meets specified technical criteria for network hardware safety.

LS-CW431G-40C Certified for Reliable Host-Device Compatibility

The module is programmed and verified to connect effortlessly with leading brand switches and routers. Users can enjoy seamless plug-and-play installation without encountering device recognition errors.

Rigorous Testing Ensures Reliable SFP Performance

Every LS-CW431G-40C 1G SFP optical transceiver undergoes comprehensive verification to guarantee stable transmission speeds and total network stability. You can discover our full validation methodology at the LINK-PP Test Support Center.

Rigorous Testing Ensures Reliable Transceiver Performance

Optical Spectrum Test

Verify central wavelength precision to ensure stable optical signal output.

Eye Pattern Test

Analyze signal waveform quality to prevent data transmission jitter issues.

Bit Error Rate Test

Measure data transmission accuracy to guarantee zero packet loss performance.

Temperature Test

Check thermal stability ranges to ensure reliable long-term hardware operation.

Product Shipping for LINK-PP LS-CW431G-40C 1G SFP

We carefully pack and handle every LS-CW431G-40C 1G CWDM SFP transceiver to prevent physical damage during delivery. Our efficient logistics network ensures your orders arrive safely and on schedule.

Anti-Static Protective Packaging

Prevent electrostatic discharge damage during storage and transit handling.

Shock-Resistant Transport Protection

Protect optical hardware components against sudden drops and vibrations.

Fast Order Processing and Dispatch

Process and dispatch orders quickly to minimize total shipment delays.

Global Logistics and International Delivery

Deliver items efficiently across international borders to your destination.

LINK-PP LS-CW431G-40C 1G SFP Usage Demonstration

Align the LS-CW431G-40C 1430nm 1G SFP module with a matching CWDM multiplexer channel and secure the LC fiber interface. Designed for high-density Fiber Channel trunks, it connects remote storage area network (SAN) nodes efficiently without requiring additional dark fiber lines.

LS-CW431G-40C 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 LS-CW431G-40C 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.

LINK-PP LS-CW431G-40C 1G SFP After-Sales Assurance

LINK-PP provides after-sales support for the smooth deployment and reliable operation of the optical modules.

15-day no-reason return and refund

Free replacement for dead-on-arrival (DOA) or defective items within the initial period

Free repair services for manufacturing defects throughout the warranty period

Warranty exclusions and conditions apply

Model Comparison Table

	Current Model LS-CW431G-40C Wavelength: 1430nm	LS-CW431G-80C Wavelength: 1430nm	LS-CW611G-40C Wavelength: 1610nm	LS-CW591G-40C Wavelength: 1590nm	LS-CW571G-40C Wavelength: 1570nm	LS-CW551G-40C Wavelength: 1550nm

Compatible	LINK-PP	LINK-PP	LINK-PP	LINK-PP	LINK-PP	LINK-PP
Data Rate (Max)	1.25Gbps	1.25Gbps	1.25Gbps	1.25Gbps	1.25Gbps	1.25Gbps
Wavelength	1430nm	1430nm	1610nm	1590nm	1570nm	1550nm
Connector	Duplex LC	Duplex LC	Duplex LC	Duplex LC	Duplex LC	Duplex LC
Cable Distance (Max)	40km	80km	40km	40km	40km	40km
Cable Type	SMF	SMF	SMF	SMF	SMF	SMF
TX Power	-5 to 0dBm	-1 to +4dBm	-5 to 0dBm	-5 to 0dBm	-5 to 0dBm	-5 to 0dBm
Receiver Sensitivity	-24dBm	-26dBm	-24dBm	-24dBm	-24dBm	-24dBm
Operating Temperature	0 to 70°C	0 to 70°C	0 to 70°C	0 to 70°C	0 to 70°C	0 to 70°C
Temperature	Commercial	Commercial	0 to 70°C	Commercial	0 to 70°C	Commercial
Form Factor	SFP	SFP	SFP	SFP	SFP	SFP
Transmitter Type	DFB	DFB	DFB	DFB	DFB	DFB
Receiver Type	PIN	PIN	PIN	PIN	PIN	PIN
Receiver Overload	-1dBm	-1dBm	-1dBm	-1dBm	-1dBm	-1dBm
EMC (Electromagnetic Compatibility)	Supported	Supported	Supported	Supported	Supported	Supported
DOM Support	Yes		Yes	Yes	Yes	Yes
Protocols	SFP MSA、SFF-8472	SFP MSA、SFF-8472	SFP MSA、SFF-8472	SFP MSA、SFF-8472	SFP MSA、SFF-8472	SFP MSA、SFF-8472

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Q: Our corporate infrastructure policy strictly requires RoHS compliance and international laser safety certification; does this optical module meet these regulatory standards? By L***r on 2026-03-22

A: Yes, the LS-CW431G-40C SFP module is fully RoHS-compliant, uses an eye-safe Class 1 laser design, and adheres to all relevant international optical transceiver standards. By admin on 2026-03-23
Q: Can this CWDM SFP handle our 1.063Gbps SAN storage replication links as well as standard 1.25Gbps Gigabit Ethernet data traffic? By M***n on 2025-08-05

A: Yes, the module fully supports both 1.063Gbps Fibre Channel for storage replication links and 1.25Gbps Gigabit Ethernet data traffic seamlessly over the single-mode fiber link. By admin on 2025-08-06
Q: Can we route this 1430nm SFP module directly through an existing passive 8-channel or 18-channel CWDM Mux/Demux unit alongside other wavelengths? By K***e on 2025-04-24

A: Yes, the module utilizes a high-stability CWDM DFB laser aligned to standard ITU grid spacing, making it fully compatible with standard passive CWDM multiplexers and demultiplexers. By admin on 2025-04-25

Customer Reviews
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P***e

Austria

Verified Purchase

5 .0

2026-06-05

We integrated this 40km SFP optical transceiver into our 8-channel passive CWDM multiplexer rack. Signal attenuation on our 32km dark fiber link was well within threshold, and the duplex LC connector clipped in with a satisfying click. Solid engineering!

73 Helpful vote Comments

B***r

Malaysia

Verified Purchase

5 .0

2026-05-30

Duplex LC optics seated firmly, perfect optical budget for our metro Mux setup.

52 Helpful vote Comments

H***e

Hungary

Verified Purchase

5 .0

2026-04-20

Two weeks in, zero drops. These 1G SFP CWDM modules are doing exactly what we needed for a 40km single-mode run. Packaging was tidy and each unit tested clean.

92 Helpful vote Comments

R***r

Romania

Verified Purchase

5 .0

2026-03-10

Upgraded our distribution layer uplinks using these Gigabit Ethernet CWDM SFP modules. Laser wavelength precision at 1430nm is dead on, preventing any cross-channel bleed in our dense mux chassis. Smooth operation throughout our server room racks.

102 Helpful vote Comments

D***d

Russian Federation

Verified Purchase

5 .0

2026-03-01

Spot-on 1430nm CWDM module, locked the 1G link instantly over our campus single-mode fiber run.

60 Helpful vote Comments

M***e

Brunei Darussalam

Verified Purchase

5 .0

2026-02-22

Commissioning an eight-site microwave-to-fiber relay link along a remote 27km backhaul route required robust CWDM transceivers, and this 40km SFP module delivered flawlessly. After dozens of field splices and patch panel crossings, the link testers still showed a 0.00% packet loss rate. The receiver sensitivity on these optical modules is outstanding, handling the complex fiber topology with ease. Link negotiation was immediate upon insertion, requiring no manual configuration.

117 Helpful vote Comments

Q***n

Morocco

Verified Purchase

4 .0

2026-02-13

Module works great — linked up instantly and DOM is accurate. Four stars only because the packaging was a bit beat up on arrival, though the SFP itself was fine. Shipping could be better protected.

30 Helpful vote Comments

O***e

Turkey

Verified Purchase

5 .0

2026-01-12

Needed an exact 1430nm optical wavelength to complete our dual-fiber CWDM grid. DOM monitoring reported nominal optical power levels on both ends, and link negotiation was immediate on MSA-compliant ports. Will buy in volume next quarter!

106 Helpful vote Comments

D***y

New Zealand

Verified Purchase

5 .0

2026-01-10

Cheap, clean, and the DOM data shows perfect power levels — can't ask for more.

63 Helpful vote Comments

C***e

Belarus

Verified Purchase

5 .0

2025-12-15

This 1430nm CWDM 1G SFP was our top choice for replacing aging legacy hardware in our primary colocation facility. The physical build is impressive; the LC duplex connectors provide a tight, snap-in fit, which is crucial for preventing signal loss during dense cable grooming. More importantly, the DOM data for parameters like supply voltage and internal module temperature aligns perfectly across our switches. If you need consistent, wire-speed 1Gbps performance for a metro loop replication project, but don't want to overpay for OEM labels, this transceiver is the smarter alternative.

124 Helpful vote Comments

U***d

Indonesia

Verified Purchase

5 .0

2025-11-25

Fast delivery, passed full link tests on our single-mode fiber spans right away.

84 Helpful vote Comments

T***n

Finland

Verified Purchase

5 .0

2025-11-08

Solid optical build quality. We used these for our enterprise SAN bridge over a dedicated metro loop. Latency is virtually unmeasurable and power consumption is negligible inside our high-density top-of-rack switches. Highly practical buy.

98 Helpful vote Comments

R***h

Lithuania

Verified Purchase

5 .0

2025-10-26

I run a network with several CWDM links between sites, and these LS-CW431G-40C modules are my go-to for 1430nm. Before deploying them, I tested them hard: eye pattern, bit errors, and a 48-hour run at both ends of the temperature range. Everything stayed clean — no packet loss, no CRC errors, and the DOM readings matched my OTDR almost exactly. The transceiver locks solidly into the cage, and the duplex LC connector mates cleanly with the optical interface. For a commercial-grade 1G SFP CWDM transceiver at this price, it's really hard to beat. We now use these on all our new builds.

149 Helpful vote Comments

L***p

Israel

Verified Purchase

5 .0

2025-09-23

Using these for base station backhaul links. The 40km reach is plenty, and the SFP MSA compliance means they drop straight into our gear without any config drama. Great value CWDM SFP transceiver.

79 Helpful vote Comments

J***e

Belgium

Verified Purchase

5 .0

2025-09-06

Deployed these 1430nm CWDM 1G SFP modules for an inter-building fiber uplink across our business park. Tx power hovered steadily around -1.5 dBm with clear DOM metrics in our management console. Running completely cool and stable.

95 Helpful vote Comments

G***r

Poland

Verified Purchase

5 .0

2025-08-02

Ordered these optical modules for a campus backbone extension where trenching new fiber wasn't an option. Slotted into our edge switches immediately without coding complaints. Real-time DOM telemetry helps our NOC keep track of optical levels.

128 Helpful vote Comments

S***e

Denmark

Verified Purchase

5 .0

2025-07-15

Replaced some pricey branded optics with these 1G SFP modules and honestly can't tell the difference. 1430nm CWDM, 40km, works as advertised. Saved the department a chunk of change.

84 Helpful vote Comments

C***e

Philippines

Verified Purchase

5 .0

2025-06-21

Solid 40km reach, clean DOM diagnostic readings, zero CRC errors so far! (•‿•)

78 Helpful vote Comments

E***e

Cambodia

Verified Purchase

5 .0

2025-06-14

This 1430nm 1.25G SFP module was the missing link for our client's storage replication project between two data halls located 35km apart. We utilized a standard CWDM passive multiplexer stack to maximize the existing single-mode fiber infrastructure. The transceivers booted up immediately, showing perfectly healthy optical signal levels via DOM in the management console. We ran a heavy load test with synchronous replication traffic, and throughput remained a rock-solid, jitter-free gigabit.

135 Helpful vote Comments

G***s

Ukraine

Verified Purchase

5 .0

2025-05-29

Installed 10 of these CWDM SFP modules in our telecom POP facility for cell tower backhaul transport. The receiver sensitivity handles our passive splitters nicely, and thermal dissipation inside the indoor rack has stayed well within standard 0°C to 70°C limits.

87 Helpful vote Comments

Z***n

Bulgaria

Verified Purchase

5 .0

2025-03-27

We just rolled out our new municipal WAN ring, connecting four remote substations over an extended 30km single-mode fiber path using these 1430nm CWDM SFP modules. The entire passive CWDM setup went live without a single hitch. Our link analysis showed very clean signal attenuation through the multiplexer chasses, leaving plenty of operational budget for the 40km-rated optics. Real-time DOM telemetry is now integrated into our SNMP monitoring stack, confirming stable voltage and temperature levels with absolutely zero frame drops during peak traffic hours.

143 Helpful vote Comments

A***k

South Africa

Verified Purchase

5 .0

2025-03-16

Flawless 1G CWDM SFP transceiver, commercial operating temperature stays cool under load.

61 Helpful vote Comments

F***s

Ireland

Verified Purchase

5 .0

2025-02-16

Bought a batch of these transceiver modules for a campus fiber rollout and they've been rock solid. The 1430nm wavelength pairs perfectly with our CWDM Mux, and DOM monitoring gives me live TX/RX power on every port. Zero issues after a month of uptime.

114 Helpful vote Comments

S***n

Macao

Verified Purchase

4 .0

2025-01-31

Module works like a charm across our 35km link, but delivery took two days longer than estimated due to regional customs clearance. Great hardware performance once installed in our switches, just make sure to order well ahead of scheduled maintenance windows.

38 Helpful vote Comments