We need to connect the 1430nm module through a CWDM network that already has multiple wavelengths in service. How do we prevent interference with the other channels?

Use the module only on the 1430nm channel and ensure the CWDM components are designed for the corresponding channel plan. Do not connect the module to a different wavelength port, because correct wavelength matching is required for stable operation.

Our switch has a standard hot-pluggable SFP cage, and we need to replace a module without taking down the chassis. Does this model support live insertion and removal?

Yes. The LS-CW431G-80C uses a hot-pluggable SFP footprint, so it can normally be inserted or removed while the switch is powered on. Follow your equipment vendor’s maintenance procedure before replacing an active uplink module.

We need to use this module in a patch-panel-heavy installation. Does frequent LC connection and reconnection affect performance?

It can, especially if connectors become dirty, scratched, or loosely seated. For an 80km optical link, clean every LC connector before installation and inspect patch cords regularly, because even small additional losses can reduce the available link margin.

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LINK-PP LS-CW431G-80C 1G SFP CWDM 1430nm 80km Duplex LC DDM SMF Optical Transceiver Module

Name: LINK-PP LS-CW431G-80C 1G SFP CWDM 1430nm 80km Duplex LC DDM SMF Optical Transceiver Module
Brand: LINK-PP
SKU: 203192
Price: 43 USD
Availability: InStock
Rating: 4.9 (28 reviews)

# 203192

Product: LINK-PP LS-CW431G-80C 1G SFP CWDM 1430nm 80km Duplex LC DDM SMF Optical Transceiver Module
SKU: 203192
P/N: LS-CW431G-80C
Price: $ 50
Stock: 55 in Stock
Sold: 615
Product URL: https://www.l-p.com/products/492658.htm

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Compatible:: Cisco; LINK-PP; Arista; Brocade; Ciena; Dell; Extreme; 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-80C 1G SFP Specifications

Designed around a DFB laser and a PIN photodiode, the LS-CW431G-80C functions as a 1430nm CWDM SFP transceiver that supports 1Gbps data rates over 80km of single-mode fiber, all within a 0 to 70°C case temperature range. Real-time digital diagnostic monitoring is embedded to provide continuous insight into the module’s operational status, complementing its long-haul capability with proactive maintenance visibility.

LINK-PP Part Number	LS-CW431G-80C	Vendor Name	LINK-PP
Form Factor	SFP	Max Data Rate	1.25Gbps
Wavelength	1430nm	Max Cable Distance	80km
Connector	Duplex LC	Media	SMF
Transmitter Type	DFB	Receiver Type	PIN
TX Power	-1 to +4dBm	RX Power	-26 to -1dBm
Receiver Sensitivity	-26dBm	Receiver Overload	-1dBm
EMC (Electro Magnetic Comnatihilitv)	Supported	DDM	Supported
Operating Temperature Range	0 to 70°C	Protocols	SFP MSA、SFF-8472

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Q: We need to connect the 1430nm module through a CWDM network that already has multiple wavelengths in service. How do we prevent interference with the other channels? By U***l on 2026-02-16

A: Use the module only on the 1430nm channel and ensure the CWDM components are designed for the corresponding channel plan. Do not connect the module to a different wavelength port, because correct wavelength matching is required for stable operation. By admin on 2026-02-17
Q: Our switch has a standard hot-pluggable SFP cage, and we need to replace a module without taking down the chassis. Does this model support live insertion and removal? By T***l on 2025-09-02

A: Yes. The LS-CW431G-80C uses a hot-pluggable SFP footprint, so it can normally be inserted or removed while the switch is powered on. Follow your equipment vendor’s maintenance procedure before replacing an active uplink module. By admin on 2025-09-03
Q: We need to use this module in a patch-panel-heavy installation. Does frequent LC connection and reconnection affect performance? By V***r on 2025-07-25

A: It can, especially if connectors become dirty, scratched, or loosely seated. For an 80km optical link, clean every LC connector before installation and inspect patch cords regularly, because even small additional losses can reduce the available link margin. By admin on 2025-07-26

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D***d

United Kingdom

Verified Purchase

5 .0

2026-06-28

Our operations group deployed these 1G CWDM SFP modules for a distributed access-control and video-management network across several industrial buildings. Although the endpoints do not require 10G, they need dependable Gigabit uplinks and clear diagnostic visibility. The LS-CW431G-80C offered the right combination of 1.25Gbps throughput, 80km maximum reach, 1430nm wavelength separation, and Duplex LC compatibility. We tested optical levels before and after moving traffic, then monitored the DOM values over several maintenance windows. There were no unexplained power swings, link flaps, or interface errors.

114 Helpful vote Comments

W***s

United Arab Emirates

Verified Purchase

5 .0

2026-05-19

For indoor commercial network cabinets, this is a sensible 1G CWDM SFP option. We are operating within the specified 0–70°C range and have seen stable Tx power and receive power. Packaging and labeling also made wavelength sorting easy.

93 Helpful vote Comments

B***n

Turkey

Verified Purchase

5 .0

2026-05-07

1430nm channel slotted into our existing CWDM Mux with zero wavelength drift. (•‿•)

57 Helpful vote Comments

K***n

Belarus

Verified Purchase

5 .0

2026-04-14

Exactly what we needed for an 80km SMF CWDM channel.

60 Helpful vote Comments

P***l

Morocco

Verified Purchase

5 .0

2026-03-27

These were selected for a multi-wavelength CWDM ring where fiber pairs are limited. The 1430nm DFB CWDM laser performed consistently, and the PIN receiver had no issue with our measured receive levels. Nice option for legacy 1G infrastructure.

129 Helpful vote Comments

S***n

Nepal

Verified Purchase

5 .0

2026-02-06

Upgraded our multi-tenant inter-building trunk with this 1G CWDM 80km SFP. The DFB laser maintains stable wavelength pass-through across our passive multiplexer, keeping channel crosstalk non-existent. The bit error rate has been zero across 30 days of continuous uptime.

89 Helpful vote Comments

Z***r

United States

Verified Purchase

5 .0

2026-01-31

We installed LS-CW431G-80C CWDM SFP modules in a phased campus network modernization project. Each unit was used on the 1430nm channel of a passive CWDM system, transporting 1Gbps traffic over OS2 single-mode fiber between core, distribution, and remote building switches. During acceptance testing, we reviewed DOM data on every port, including module temperature, supply voltage, transmit output, and received optical power. The DDM readings gave our team quick confirmation that connector cleaning and splice-loss conditions were acceptable before handing the links to operations. The DFB transmitter and PIN receiver combination maintained stable values across the deployed set, with no packet errors observed during sustained traffic tests.

135 Helpful vote Comments

H***n

Hungary

Verified Purchase

5 .0

2026-01-15

A solid 1.25G SFP module for our campus fiber backbone.

64 Helpful vote Comments

O***n

Libyan Arab Jamahiriya

Verified Purchase

5 .0

2025-12-26

We needed a long-reach 1430nm CWDM optical transceiver for a regional surveillance network. It worked with our single-mode fiber and Duplex LC patch cords without needing any special setup. The module feels well built and runs cool in a standard indoor switch.

86 Helpful vote Comments

J***d

Bulgaria

Verified Purchase

5 .0

2025-11-22

Reliable 1430nm CWDM module with clean interoperability in our mixed network.

55 Helpful vote Comments

B***y

Germany

Verified Purchase

5 .0

2025-11-02

This module was used for a long rural backhaul segment connecting a remote communications cabinet to the main network hub. The actual fiber distance was about 65km, with several intermediate patch panels, so we specifically chose an 80km 1430nm CWDM SFP rather than a shorter-reach optic. The modules linked cleanly over Duplex LC single-mode fiber and remained stable during a two-week burn-in. Our technicians monitored Rx power via SFF-8472 diagnostics and found enough headroom to support normal connector aging and future maintenance.

147 Helpful vote Comments

T***e

Bangladesh

Verified Purchase

5 .0

2025-10-19

Needed an 80km CWDM SFP module to bridge an off-site backup storage cluster. The duplex LC connector locks firmly into place with zero optical back-reflection issues. Full Gigabit Ethernet line throughput with ultra-low latency. Highly recommended!

131 Helpful vote Comments

D***l

Ireland

Verified Purchase

5 .0

2025-10-05

Awesome 80km 1G CWDM SFP for a long single-mode fiber run.

69 Helpful vote Comments

X***e

Argentina

Verified Purchase

5 .0

2025-09-14

Ordered for a campus fiber network where we wanted to avoid pulling another fiber pair. The 1430nm CWDM transceiver integrated neatly with the passive mux/demux system. It is a straightforward module for long-distance Gigabit Ethernet transport.

79 Helpful vote Comments

L***r

Brunei Darussalam

Verified Purchase

5 .0

2025-08-27

We used this 1G 1430nm CWDM SFP to extend a management network from the main office to a utility building. The Duplex LC connection came up immediately over existing single-mode fiber, and the DOM values have remained stable after several weeks.

86 Helpful vote Comments

E***k

Canada

Verified Purchase

5 .0

2025-08-17

We purchased a larger lot for a multi-site network refresh where legacy 1G switching remains in service. The design uses CWDM wavelengths to consolidate multiple services over single-mode fiber, and the 1430nm channel was required to match the existing wavelength plan. These transceivers were installed in batches across central and remote locations. The rollout went smoothly because the modules were clearly labeled and the Duplex LC form factor matched our patching standard. We performed port-level checks for DDM availability, optical power consistency, and error counters after each activation. Results were consistent across the batch, and none required replacement during commissioning. The 80km specification gives useful design flexibility, even though most installed routes are shorter. Excellent fit for commercial-grade indoor network deployments.

146 Helpful vote Comments

Q***n

Macao

Verified Purchase

5 .0

2025-07-06

Good choice for a long-distance Gigabit fiber uplink. We checked the digital diagnostics after installation, and the temperature, voltage, and optical power readings were all available as expected.

114 Helpful vote Comments

G***y

Israel

Verified Purchase

5 .0

2025-06-25

Duplex LC fit was snug and the optical power was right on target.

54 Helpful vote Comments

Y***l

Japan

Verified Purchase

5 .0

2025-06-09

Price-to-performance is fair for an 80km 1G CWDM transceiver module. We did not need the full reach, but the extra optical budget helps on an older single-mode route with multiple patch points. Would order again for similar links.

104 Helpful vote Comments

R***r

Maldives

Verified Purchase

5 .0

2025-05-22

Used two units for a point-to-point connection between a warehouse and a central IT room. The route is around 72km, so the 80km CWDM SFP gave us a comfortable power budget. The link has been steady through normal daily traffic.

97 Helpful vote Comments

I***n

Denmark

Verified Purchase

5 .0

2025-04-28

Accurate SFF-8472 DOM metrics and zero frame drops on our fiber backhaul.

73 Helpful vote Comments

C***z

France

Verified Purchase

5 .0

2025-04-11

Integrated several 1430nm 1.25Gbps SFP modules into 8-channel passive CWDM Mux/Demux infrastructures connecting our main campus data center to an off-site secondary facility across 62km of single-mode fiber. The 1430nm wavelength channel operates with minimal spectral width, eliminating adjacent-channel crosstalk across the entire multiplexer backplane. Thermal performance inside our 1RU SFP aggregation switch remained completely stable, with DDM reporting internal case temperatures holding steady at 41°C under continuous enterprise traffic. The hot-pluggable design handles live insertion cleanly without causing transient voltage spikes or link flaps on neighboring ports. Outstanding physical-layer optical engineering.

122 Helpful vote Comments

M***n

Cambodia

Verified Purchase

5 .0

2025-03-12

Purchased a small batch for a CWDM MUX/DEMUX project in a business park. The LS-CW431G-80C SFP modules matched the 1430nm channel correctly and gave us plenty of optical margin on links well below the 80km rating. Good value for enterprise fiber expansion.

133 Helpful vote Comments

F***e

Australia

Verified Purchase

4 .0

2025-03-03

The modules arrived in good working condition and our 1430nm CWDM links came up right away. One shipment was held an extra day during carrier processing, so build a little buffer into the project schedule.

32 Helpful vote Comments

V***n

Iran, Islamic Republic of

Verified Purchase

5 .0

2025-02-19

The LC duplex interface was convenient because the site already had standard LC patch panels. Optical monitoring through SFF-8472 diagnostics helped us confirm the loss budget during turn-up. No issues after the first month.

110 Helpful vote Comments

E***y

Ukraine

Verified Purchase

5 .0

2025-02-05

Stable 1430nm CWDM link at our remote site, and DOM readings look clean.

60 Helpful vote Comments

N***s

Lithuania

Verified Purchase

5 .0

2025-01-29

Installed as part of a 1.25G SFP CWDM upgrade between two equipment rooms. The DDM function is useful because our NOC can check Tx/Rx power without sending someone onsite. So far, no CRC errors or unexpected link drops.

97 Helpful vote Comments

G***t

India

Verified Purchase

4 .0

2025-01-18

The LS-CW431G-80C optics were packed in anti-static cases and worked normally in our single-mode fiber deployment. International tracking updates were limited for part of the transit, but the order arrived safely.

20 Helpful vote Comments