Can we use this LS-CW331G-80C module for both standard 1G Ethernet and our 1G Fibre Channel storage SAN?

Yes. The transceiver natively supports data rates up to 1.25 Gbps. It works seamlessly with standard Gigabit Ethernet switches and 1.063G Fibre Channel SAN storage connections over your CWDM network.

What happens to the CWDM 1330nm DFB laser if our server room gets too hot and exceeds 70°C?

If operating temperatures exceed 70°C, the CWDM laser wavelength can drift outside its standard channel grid, which may cause optical packet loss or link drops. As long as your equipment runs within 0°C to 70°C, the module will perform stably.

We need remote monitoring for our fiber links. Can this 1330nm CWDM SFP report real-time optical power in our network management system?

Yes, the LS-CW331G-80C module features built-in Digital Diagnostic Monitoring (DDM). Through your switch CLI or web interface, you can monitor real-time Rx/Tx optical power, operating temperature, laser bias current, and supply voltage to track link health.

We are looking at a 65km single-mode fiber run between two sites using CWDM Mux filters. Will this 1G CWDM SFP module have enough reach for our setup?

It should generally be a great fit, but we always recommend checking your total optical loss budget first. The LS-CW331G-80C is designed for long-distance Single Mode Fiber (SMF) with duplex LC connectors. While 65km is well within its rated reach, fiber quality, splice points, and CWDM Mux insertion loss can add up. As long as your total link loss stays within the module's optical power budget, it will provide a reliable, stable connection.

Breadcrumb: Home; Products; Optics Transceivers | SFP Modules; 1/2/4G Transceiver Modules; 1G CWDM/DWDM SFP; 224949

Click to open expanded view

Generic CW-SFP1G80-33 Compatible LINK-PP 1G SFP CWDM 1330nm 80km Duplex LC DDM SMF Optical Transceiver Module

Name: Generic CW-SFP1G80-33 Compatible LINK-PP 1G SFP CWDM 1330nm 80km Duplex LC DDM SMF Optical Transceiver Module
Brand: LINK-PP
SKU: 224949
Price: 41.28 USD
Availability: InStock
Rating: 4.9 (15 reviews)

Product: Generic CW-SFP1G80-33 Compatible LINK-PP 1G SFP CWDM 1330nm 80km Duplex LC DDM SMF Optical Transceiver Module
SKU: 224949
P/N: LS-CW331G-80C
Price: $ 48
Stock: 128 in Stock
Sold: 592
Product URL: https://www.l-p.com/products/497626.htm

For Order Over $1000 Get $15.00 Off , Code: Linkpp15

For Order Over $3000 Get $50.00 Off , Code: Linkpp50

For Order Over $5000 Get $100.00 Off , Code: Linkpp100

New Users: $10 Coupon for Orders , Code: linkpp2610

15 Reviews

4 Questions

592 Sold

$ 48

Free shipping over $600, If you need a more favorable price, please contact us directly.

Qty (pcs) :

Unit Price :

$ 48

100

$ 45.6

1000

$ 44.16

3000

$ 42.72

6000

$ 41.28

Manufacture: LINK-PP P/N: LS-CW331G-80C SKU: 224949

Compatible:: Cisco; LINK-PP; Arista; Brocade; Ciena; Dell; Extreme; FS; Generic; Juniper; Netgear

Wavelength:: 1270nm; 1310nm; 1330nm; 1350nm

Shipping:

To Be Negotiated

Free Shipping

Can't deliver

to United States via {{now_chooseship?now_chooseship.name:''}}

Estimated delivery time : {{now_chooseship?now_chooseship.datemin:''}}-{{now_chooseship?now_chooseship.datemax:''}} days.

5-Year Warranty 30-Day Returns 30-Day Exchange

Stock:

{{parseInt(detail_data.left_num) ? detail_data.left_num +' in Stock' :detail_data.zeroStockOrder==0?'Out of Stock':'Available'}} .

Quantity:

( Min. Order {{detail_data.prodInfo.minimum_ordered_quantity}} )

undeliverable

Total Price:

{{ detail_data.displayed_price.unit_prefix }} {{ detail_data.displayed_price.original_total_price }} ( {{ detail_data.displayed_price.rate_of_discount }}% OFF ) {{detail_data.displayed_price.ex_sell_type}}

Specifications

Specification
Matching Products
Download
Q&A
Customer Reviews

Generic CW-SFP1G80-33 Compatible LINK-PP 1G SFP Specifications

CW-SFP1G80-33 functions as a 1330nm CWDM SFP transceiver, rated for 1.25Gbps and 80km SMF transmission, with a DFB laser source and a PIN detector. Over the 0 - 70°C ambient range, it provides built-in real-time DDM functions that monitor critical operating parameters (like optical power, bias current, temperature, and voltage) without external metering. The module’s wavelength stability and dispersion tolerance are specifically defined for long-haul CWDM links at this reach.

Generic Part Number	CW-SFP1G80-33	Vendor Name	LINK-PP
Form Factor	SFP	Max Data Rate	1.25Gbps
Wavelength	1330nm	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 (Electromagnetic Compatibility)	Supported	DDM Support	Yes
Operating Temperature Range	0 to 70°C	Protocols	SFP MSA、SFF-8472

Matching Products

Pictures

ID#

Description

Price

Stock

Add to Cart

Download

Product Drawing

PDF
LS-CWxx1G-80x.pdf

Questions & Answers
Ask a Question

No data

Q: Can we use this LS-CW331G-80C module for both standard 1G Ethernet and our 1G Fibre Channel storage SAN? By E***n on 2026-04-09

A: Yes. The transceiver natively supports data rates up to 1.25 Gbps. It works seamlessly with standard Gigabit Ethernet switches and 1.063G Fibre Channel SAN storage connections over your CWDM network. By admin on 2026-04-09
Q: What happens to the CWDM 1330nm DFB laser if our server room gets too hot and exceeds 70°C? By C***y on 2026-02-07

A: If operating temperatures exceed 70°C, the CWDM laser wavelength can drift outside its standard channel grid, which may cause optical packet loss or link drops. As long as your equipment runs within 0°C to 70°C, the module will perform stably. By admin on 2026-02-08
Q: We need remote monitoring for our fiber links. Can this 1330nm CWDM SFP report real-time optical power in our network management system? By Y***n on 2025-10-30

A: Yes, the LS-CW331G-80C module features built-in Digital Diagnostic Monitoring (DDM). Through your switch CLI or web interface, you can monitor real-time Rx/Tx optical power, operating temperature, laser bias current, and supply voltage to track link health. By admin on 2025-10-31
Q: We are looking at a 65km single-mode fiber run between two sites using CWDM Mux filters. Will this 1G CWDM SFP module have enough reach for our setup? By D***y on 2025-06-16

A: It should generally be a great fit, but we always recommend checking your total optical loss budget first. The LS-CW331G-80C is designed for long-distance Single Mode Fiber (SMF) with duplex LC connectors. While 65km is well within its rated reach, fiber quality, splice points, and CWDM Mux insertion loss can add up. As long as your total link loss stays within the module's optical power budget, it will provide a reliable, stable connection. By admin on 2025-06-16

Customer Reviews
Write a Review

{{stardata.star}}

{{comment.count}} reviews
5 Stars

{{comment.star5}}%

4 Stars

{{comment.star4}}%

3 Stars

{{comment.star3}}%

2 Stars

{{comment.star2}}%

1 Star

{{comment.star1}}%

All Reviews ({{comment.star_num?comment.star_num:comment.count}})

All Reviews

5 stars only

4 stars only

3 stars only

2 stars only

1 star only
Reviews with Pictures ( {{comment.pic_comment}} )
See All Reviews

No data

O***g

Morocco

Verified Purchase

5 .0

2026-05-13

We tested these on a multi-vendor switch environment; interoperability was clean, and the SFF-8472 support made diagnostics straightforward. Great for mixed-fleet deployments.

93 Helpful vote Comments

I***r

Hungary

Verified Purchase

5 .0

2026-04-20

1330nm channel passed right through our 8-channel MUX smoothly!

95 Helpful vote Comments

R***w

Nepal

Verified Purchase

5 .0

2026-03-25

Deployed these 1330nm CWDM SFP modules across our multi-building fiber ring. The link budget easily handled our 52km run with LC duplex patches. Running 24/7 without a single CRC error.

100 Helpful vote Comments

L***h

Brunei Darussalam

Verified Purchase

5 .0

2026-02-22

Deployed a pair for a point-to-point metro link; 75km SMF run stayed stable with no packet loss over a week of stress testing. The 1330nm CWDM wavelength paired cleanly with our MUX/DEMUX.

60 Helpful vote Comments

Y***n

Germany

Verified Purchase

4 .0

2026-01-20

Great optics and clean DOM data, though our first shipment took a bit longer than expected to clear customs. Once in hand, the 1330nm 80km SFPs worked flawlessly on our SMF links.

21 Helpful vote Comments

X***s

United Kingdom

Verified Purchase

5 .0

2025-12-06

We deployed these in a set of climate-controlled outdoor cabinets along a metro route, pairing them with existing CWDM MUX/DEMUX gear. Thermal behavior was predictable, and the modules stayed within their rated commercial range even during hot afternoons. Link uptime has been excellent, and the ability to monitor optical health remotely has cut down on routine site visits. The duplex LC connectors and standard SFP footprint made the install quick for our field teams.

137 Helpful vote Comments

N***k

Lithuania

Verified Purchase

5 .0

2025-10-26

Bought 50 pcs for a campus fiber refresh; consistency across the batch was excellent, and the 1.25Gbps rate fits our legacy aggregation gear. Shipping was smooth and packaging protected the modules well.

129 Helpful vote Comments

S***h

Bangladesh

Verified Purchase

5 .0

2025-08-25

Paired this 1330nm wavelength module with our passive CWDM multiplexer grid. Channel isolation is clean, and receiver sensitivity stayed well within theoretical specs.

84 Helpful vote Comments

H***k

Denmark

Verified Purchase

5 .0

2025-07-15

Wavelength alignment with our CWDM MUX/DEMUX was spot-on for the 1330nm channel.

88 Helpful vote Comments

M***n

Cambodia

Verified Purchase

5 .0

2025-06-14

We use these in a small ISP backhaul node; DDM lets us track optical power and temperature remotely, which cuts down on site visits. Plug-and-play with our SFP slots, no coding needed.

104 Helpful vote Comments

Q***e

Maldives

Verified Purchase

5 .0

2025-04-04

For 1G CWDM 1330nm 80km needs, these hit the sweet spot between price and performance. The DFB transmitter and PIN receiver combo delivers stable BER in our tests.

98 Helpful vote Comments

J***r

Bulgaria

Verified Purchase

5 .0

2025-03-27

65km single-mode fiber span bridged effortlessly at 1.25Gbps.

83 Helpful vote Comments

Z***d

France

Verified Purchase

4 .0

2025-03-05

No issues on the technical side — clean handshakes and stable links; delivery was delayed by a day due to a sorting error at the local depot. Still a good buy overall.

36 Helpful vote Comments

U***h

United Arab Emirates

Verified Purchase

5 .0

2025-02-24

We installed 12 pairs across two aggregation sites. Average TX power measured +2.1 dBm, RX around -12.4 dBm, with DDM showing stable temps under 45°C in our ventilated cabinets. Over 72 hours of 1.25Gbps traffic, we saw zero CRC errors and no re-sync events. The 1330nm CWDM channel aligned perfectly with our existing CWDM MUX/DEMUX grid, and the DOM made it easy to set threshold alerts in our NMS. For 80km-class optics, the link budget headroom was comfortable even with aging fiber.

144 Helpful vote Comments

F***r

Ireland

Verified Purchase

5 .0

2025-02-16

DOM data integrates cleanly with our monitoring stack, making power and temp checks trivial.

64 Helpful vote Comments