Can I just plug this 1530nm SFP+ module into our existing CWDM MUX tray without worrying about channel bleed?

Absolutely. As long as your MUX panel has a matching 1530nm channel assigned, it will pass through cleanly with zero optical interference across adjacent wavelengths.

Does this LS-CW5310-40C 10G CWDM module support hot-swappable replacement while our core aggregation switch remains powered on and serving live traffic?

Yes, it features a hot-pluggable SFP+ footprint allowing safe insertion or removal without interrupting adjacent port traffic.

Our rack density is high and ambient temps hit around 45°C. Will the cooled EML laser in this module stay stable?

Yes, the integrated cooled EML laser maintains precise 1530nm wavelength stability even under high internal case temperatures up to the 70°C operating limit.

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H3C CWDM-SFP10G-1530-40 Compatible LINK-PP 10G SFP+ CWDM 1530nm 40km Duplex LC DDM SMF optical Transceiver Module

Name: H3C CWDM-SFP10G-1530-40 Compatible LINK-PP 10G SFP+ CWDM 1530nm 40km Duplex LC DDM SMF optical Transceiver Module
Brand: LINK-PP
SKU: 221949
Price: 220.16 USD
Availability: InStock
Rating: 4.9 (27 reviews)

# 221949

Product: H3C CWDM-SFP10G-1530-40 Compatible LINK-PP 10G SFP+ CWDM 1530nm 40km Duplex LC DDM SMF optical Transceiver Module
SKU: 221949
P/N: LS-CW5310-40C
Price: $ 256
Stock: 652 in Stock
Sold: 604
Product URL: https://www.l-p.com/products/483674.htm

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Manufacture: LINK-PP

P/N: LS-CW5310-40C

Compatible:: Cisco; LINK-PP; Alcatel-Lucent; Brocade; Ciena; Dell; FS; Generic; H3C; HPE; Juniper

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

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H3C CWDM-SFP10G-1530-40 Compatible LINK-PP 10G SFP+ Specifications

CWDM-SFP10G-1530-40 is specified as a 10G SFP+ CWDM module centered at 1530nm, equipped with a cooled EML laser and PIN photodiode, capable of reaching 40km over single-mode fiber through a duplex LC interface, and providing real-time digital diagnostics to track module operating conditions.

H3C Part Number	CWDM-SFP10G-1530-40	Vendor Name	LINK-PP
Form Factor	SFP+	Max Data Rate	10.7Gbps
Wavelength	1530nm	Max Cable Distance	40km
Connector	Duplex LC	Media	SMF
Transmitter Type	EML	Receiver Type	PIN
TX Power	-1 to +5dBm	RX Power	-23 to -6dBm
Receiver Sensitivity	-16dBm	DOM Support	Yes
Operating Temperature Range	0 to 70°C	Protocols	SFP+ MSA Compliant, SFF 8472, SFF 8431, 802.3ae, ITU-T

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LS-CWxx10-40C 1271-1611.pdf

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Q: Can I just plug this 1530nm SFP+ module into our existing CWDM MUX tray without worrying about channel bleed? By T***n on 2026-02-13

A: Absolutely. As long as your MUX panel has a matching 1530nm channel assigned, it will pass through cleanly with zero optical interference across adjacent wavelengths. By admin on 2026-02-14
Q: Does this LS-CW5310-40C 10G CWDM module support hot-swappable replacement while our core aggregation switch remains powered on and serving live traffic? By S***s on 2025-11-23

A: Yes, it features a hot-pluggable SFP+ footprint allowing safe insertion or removal without interrupting adjacent port traffic. By admin on 2025-11-24
Q: Our rack density is high and ambient temps hit around 45°C. Will the cooled EML laser in this module stay stable? By R***e on 2025-04-19

A: Yes, the integrated cooled EML laser maintains precise 1530nm wavelength stability even under high internal case temperatures up to the 70°C operating limit. By admin on 2025-04-20

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M***m

Thailand

Verified Purchase

5 .0

2026-05-22

We evaluated this 10G 1530nm CWDM module as part of a multi-site storage replication project. The tested route was approximately 34km, with optical loss affected by older fiber joints and several intermediate frames. The published receive sensitivity and DOM support were important to us because we needed to monitor link margin instead of relying only on link-up status. After a week of traffic, backup windows completed normally and optical readings remained stable. This is the type of 40km CWDM SFP+ module we would use again for cost-conscious metro and campus expansion.

129 Helpful vote Comments

P***s

Germany

Verified Purchase

5 .0

2026-05-05

The 1530nm channel matched our network plan with zero issues.

42 Helpful vote Comments

X***s

Spain

Verified Purchase

5 .0

2026-01-06

Finding dependable 1530nm CWDM 40km SFP modules at this price point used to be tricky. Plugged these into our TOR switches and achieved zero packet loss during sustained throughput tests. Will stock up for future maintenance inventory.

90 Helpful vote Comments

P***s

Italy

Verified Purchase

5 .0

2025-12-08

Upgraded our campus distribution layer using these 40km 1530nm CWDM modules. The LC duplex connection clicked in snugly, and line-rate performance validation was clean right away. Definitely buying more for our upcoming site expansion! (•̀ᴗ•́)و

97 Helpful vote Comments

I***n

Mexico

Verified Purchase

5 .0

2025-11-18

Our fiber route is just under 30km, but we selected the 40km 1530nm CWDM SFP+ for extra optical margin. It has been stable on single-mode fiber and handles our daily backup traffic without errors.

96 Helpful vote Comments

S***n

France

Verified Purchase

5 .0

2025-10-14

Fast install, accurate diagnostics, and dependable 10G performance.

53 Helpful vote Comments

S***n

Australia

Verified Purchase

5 .0

2025-09-30

Runs cool in our rack and holds 10G line-rate speed without dropping frames.

73 Helpful vote Comments

C***n

Indonesia

Verified Purchase

4 .0

2025-08-12

Very satisfied with the transceiver performance on our campus fiber link. Customs processing added a short delay, but that was a logistics issue rather than a product issue.

24 Helpful vote Comments

J***s

Norway

Verified Purchase

5 .0

2025-08-06

We installed LS-CW5310-40C optics transceivers on a 36km single-mode fiber path connecting a central data room to a distribution site. The path includes multiple patch panels and a CWDM MUX/DEMUX pair, so we wanted a 40km 10G CWDM SFP+ with enough margin for real-world insertion loss. DOM values gave our NOC a quick way to verify optical health after turn-up, and traffic testing showed no CRC errors or packet loss. The 1530nm channel integrated cleanly with the rest of the CWDM plan.

145 Helpful vote Comments

Q***r

United Kingdom

Verified Purchase

5 .0

2025-07-01

Received clean optical readings from day one — very reassuring.

67 Helpful vote Comments

V***n

Republic of Korea

Verified Purchase

5 .0

2025-06-24

Used these for a regional network aggregation project where fiber availability was limited. The 40km 10G 1530nm CWDM design let us add capacity over our existing SMF pair instead of pulling new cable. Big win for the project budget.

83 Helpful vote Comments

B***d

South Africa

Verified Purchase

4 .0

2025-06-11

Installed these 40km SFP+ CWDM modules on our single-mode fiber route with no issues. Delivery tracking stopped updating for a short time, which caused some concern, but the package arrived complete and protected.

28 Helpful vote Comments

G***e

United States

Verified Purchase

5 .0

2025-05-19

Excellent optical stability across our long-haul CWDM fiber path.

44 Helpful vote Comments

W***r

India

Verified Purchase

5 .0

2025-04-26

We used this LS-CW5310-40C module to extend a 10GbE connection between two campus buildings. The 1530nm channel lined up with our CWDM MUX/DEMUX plan, and the duplex LC connection was straightforward. Good value for a 40km 10G CWDM SFP+ optic.

85 Helpful vote Comments

J***z

Brazil

Verified Purchase

5 .0

2025-04-12

Great selection and prices. Easy checkout.

82 Helpful vote Comments

V***c

Austria

Verified Purchase

5 .0

2025-03-26

Great website also. Lots of useful magnetics products. I will use again.

33 Helpful vote Comments

S***h

Finland

Verified Purchase

5 .0

2025-03-03

Easy to order,clear illustrations, friendly site to order goods from.

21 Helpful vote Comments

S***o

Russian Federation

Verified Purchase

5 .0

2024-10-23

Cheap prices, Fast shipping and good products.

89 Helpful vote Comments

A***o

Canada

Verified Purchase

5 .0

2024-10-18

Guess what: they worked right away, from the moment I put them in the switch! So I am happy. Happy that the ethernet port are the right ones, happy with you handling my case and happy with LINK-PP as a company with such a great customer care.

88 Helpful vote Comments

N***r

Canada

Verified Purchase

5 .0

2024-09-26

That was easy, no compatibility issues. THANK YOU.

45 Helpful vote Comments

M***r

Brunei Darussalam

Verified Purchase

5 .0

2024-07-05

I always enjoy shopping online from Link-pp high quality on everything I had purchased in the past.

112 Helpful vote Comments

S***o

Malaysia

Verified Purchase

4 .0

2024-04-02

This is a great purchasing experience. I'm very satisfied with the high quality and a extremely affordable price.

38 Helpful vote Comments

A***L

Hong Kong

Verified Purchase

5 .0

2023-12-02

The order process went well, and I think I received a good value for the item I purchased. It was delivered as scheduled. I wish I could have received a better deal on the warrenty of my product. I like having the extra warrenty, but if the cost is high, I do not get it., Thanks for your help, providing me with a great shopping experance.

17 Helpful vote Comments

K***y

Israel

Verified Purchase

5 .0

2023-11-27

This item is durable and easy to use, delivered on time and the price is just.

42 Helpful vote Comments

L***o

Ireland

Verified Purchase

5 .0

2023-08-24

I am a little guy but treated as a big fish. prompt notification quick delivery and save lot cash!!!

91 Helpful vote Comments

H***n

United States

Verified Purchase

5 .0

2023-03-31

LINK-PP is the best supplier in China. The high quality, the perfect after sales services, the Fast delivery, the professional sales and so on. Now, the SI-80007-F has been worked on my switch without any problems. Moreover, the price is more favorable than other suppliers.

88 Helpful vote Comments

R***t

Philippines

Verified Purchase

5 .0

2023-02-27

we need various kinds of 10/25/40G Transceiver Modules, Link-pp is really a reliable partner which directly sent all of it to us timely from their US warehouse.

11 Helpful vote Comments