Will this 1.25G BiDi module work natively with my Cisco Catalyst switches without throwing "unsupported transceiver" errors?

Yes, absolutely. These modules are specifically coded for 100% OEM compatibility. You can plug them directly into Cisco, Ubiquiti, or Aruba gear, and they’ll be recognized immediately with full DDM/DOM support—no CLI workarounds needed.

Just to be 100% sure before I finalize the PO, what exact fiber patch cables do I need for these SFP modules?

You will need Single-Mode Fiber (SMF) patch cables with a Simplex SC connector. Since this is a BiDi (Bidirectional) WDM module, it transmits and receives over a single strand of fiber, which makes your cable management and routing much easier!

Are these transceivers compliant with MSA standards? We need to ensure they meet our industry regulations for telecom deployment.

Yes, they are fully compliant with the Multi-Source Agreement (MSA) standards, IEEE 802.3z, and RoHS. They pass strict factory quality control protocols, making them perfectly safe and certified for official telecom and enterprise IT environments.

We need to install these in an outdoor cabinet for a base station backhaul. Do you have a version that handles extreme weather?

Yes! While the commercial version is great for standard indoor server rooms (0~70°C), we also manufacture a rugged Industrial wide-temperature version (-40°C to 85°C). It’s specifically designed for harsh outdoor environments and non-climate-controlled enclosures.

I'm planning a large data center interconnect project and need about 200 of these. Do you offer bulk discounts for enterprise procurement?

We definitely do! For B2B orders and bulk deployments, we offer tiered volume pricing. Please reach out to our sales team with your exact quantity, and we'll get you a highly competitive quote for your project.

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LINK-PP LS-SC55311G-40C 1G SFP BiDi 1550nm-TX/1310nm-RX 40km Simplex SC DOM SMF Optical Transceiver Module

Name: LINK-PP LS-SC55311G-40C 1G SFP BiDi 1550nm-TX/1310nm-RX 40km Simplex SC DOM SMF Optical Transceiver Module
Brand: LINK-PP
SKU: 202203
Price: 17.63 USD
Availability: InStock
Rating: 5 (21 reviews)

# 202203

Product: LINK-PP LS-SC55311G-40C 1G SFP BiDi 1550nm-TX/1310nm-RX 40km Simplex SC DOM SMF Optical Transceiver Module
SKU: 202203
P/N: LS-SC55311G-40C
Price: $ 20.5
Stock: 110 in Stock
Sold: 2.2K
Product URL: https://www.l-p.com/products/491682.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

21 Reviews

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Manufacture: LINK-PP

P/N: LS-SC55311G-40C

Compatible:: LINK-PP

Compatible P/N:: LS-SC31551G-03C | 3km; LS-SC31551G-03I | 3km; LS-SC55311G-03C | 3km; LS-SC55311G-03I | 3km; LS-SC31491G-10C | 10km; LS-SC31551G-10C | 10km; LS-SC31551G-10I | 10km; LS-SC49311G-10C | 10km; LS-SC55311G-10C | 10km; LS-SC55311G-10I | 10km; LS-SC31491G-20C | 20km; LS-SC31551G-20C | 20km; LS-SC31551G-20I | 20km; LS-SC49311G-20C | 20km; LS-SC55311G-20C | 20km; LS-SC55311G-20I | 20km; LS-SC31551G-40C | 40km; LS-SC31551G-40I | 40km; LS-SC55311G-40C | 40km; LS-SC55311G-40I | 40km

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LINK-PP LS-SC55311G-40C 1G BiDi SFP Specifications

The LINK-PP LS-SC55311G-40C is a high-performance 1G BiDi SFP transceiver engineered specifically for demanding Gigabit Ethernet applications. These comprehensive optical module specifications highlight its robust efficiency in single-mode fiber networks. Delivering reliable 1000BASE-BX connectivity, this single-fiber bidirectional pluggable module ensures exceptional data transmission for modern enterprise and telecommunication networking environments.

LINK-PP Part Number	LS-SC55311G-40C	Vendor Name	LINK-PP
Form Factor	SFP	Max Data Rate	1.25Gbps
Wavelength	1550nm-TX/1310nm-RX	Max Cable Distance	40km
Connector	Simplex SC	Media	SMF
Transmitter Type	DFB	Receiver Type	PIN
TX Power	-9 to 0dBm	RX Power	-23 to -1dBm
Receiver Sensitivity	-24dBm	Receiver Overload	-3dBm
DOM Support	Yes	Operating Temperature Range	0 to 70°C

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Q: Will this 1.25G BiDi module work natively with my Cisco Catalyst switches without throwing "unsupported transceiver" errors? By J***k on 2026-06-25

A: Yes, absolutely. These modules are specifically coded for 100% OEM compatibility. You can plug them directly into Cisco, Ubiquiti, or Aruba gear, and they’ll be recognized immediately with full DDM/DOM support—no CLI workarounds needed. By admin on 2026-06-25
Q: Just to be 100% sure before I finalize the PO, what exact fiber patch cables do I need for these SFP modules? By M***s on 2026-05-12

A: You will need Single-Mode Fiber (SMF) patch cables with a Simplex SC connector. Since this is a BiDi (Bidirectional) WDM module, it transmits and receives over a single strand of fiber, which makes your cable management and routing much easier! By admin on 2026-05-12
Q: Are these transceivers compliant with MSA standards? We need to ensure they meet our industry regulations for telecom deployment. By K***z on 2025-09-10

A: Yes, they are fully compliant with the Multi-Source Agreement (MSA) standards, IEEE 802.3z, and RoHS. They pass strict factory quality control protocols, making them perfectly safe and certified for official telecom and enterprise IT environments. By admin on 2025-09-10
Q: We need to install these in an outdoor cabinet for a base station backhaul. Do you have a version that handles extreme weather? By E***n on 2025-08-05

A: Yes! While the commercial version is great for standard indoor server rooms (0~70°C), we also manufacture a rugged Industrial wide-temperature version (-40°C to 85°C). It’s specifically designed for harsh outdoor environments and non-climate-controlled enclosures. By admin on 2025-08-05
Q: I'm planning a large data center interconnect project and need about 200 of these. Do you offer bulk discounts for enterprise procurement? By D***a on 2025-01-15

A: We definitely do! For B2B orders and bulk deployments, we offer tiered volume pricing. Please reach out to our sales team with your exact quantity, and we'll get you a highly competitive quote for your project. By admin on 2025-01-15

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B***r

Czech Republic

Verified Purchase

5 .0

2026-07-25

Replaced overpriced branded optics with these for our campus fiber network. Extensive testing showed identical transmission distance and latency. The 1550nm-TX optical power is rock solid across all our edge switches.

94 Helpful vote Comments

M***s

Netherlands

Verified Purchase

5 .0

2026-07-14

Accurate DDM readings on my Netgear setup.

80 Helpful vote Comments

M***a

Hong Kong

Verified Purchase

5 .0

2026-06-22

Used these for switch compatibility testing. Handled standard protocols perfectly out of the box.

180 Helpful vote Comments

J***s

Mexico

Verified Purchase

5 .0

2026-06-06

Unbeatable value for SMF fiber optic modules. Deployed 50 units without a single failure.

206 Helpful vote Comments

L***h

Japan

Verified Purchase

5 .0

2026-05-25

Flawless data center interconnect performance so far.

250 Helpful vote Comments

A***s

Greece

Verified Purchase

5 .0

2026-05-16

The 40km distance is legit. Stable link for our remote office building connectivity.

76 Helpful vote Comments

J***n

Hong Kong

Verified Purchase

5 .0

2026-04-25

I run a WISP and deployed these 1.25g bidi sfp 40km modules in harsh outdoor enclosures. The industrial wide-temp rating held up through summer heatwaves perfectly without dropping packets. Absolutely bulletproof backhaul.

199 Helpful vote Comments

C***n

Spain

Verified Purchase

5 .0

2026-04-09

Integrated this into a gigabit switch to run a legacy link to a home 10G NAS setup. The SC simplex interface made cable management a breeze. DDM monitoring works natively!

106 Helpful vote Comments

S***n

Finland

Verified Purchase

5 .0

2026-04-07

Reliable 1550nm-TX/1310nm-RX for base station backhaul.

121 Helpful vote Comments

L***z

Poland

Verified Purchase

5 .0

2026-01-27

Seamless OEM compatibility, no coding issues. ⚙️

179 Helpful vote Comments

S***g

Czech Republic

Verified Purchase

5 .0

2026-01-25

Solid single-mode fiber module, plug and play. ⚡

59 Helpful vote Comments

E***n

Dominican Republic

Verified Purchase

5 .0

2025-11-14

Smooth upgrade for our base station network. The 1310nm-RX sensitivity is completely accurate.

205 Helpful vote Comments

J***l

Sweden

Verified Purchase

5 .0

2025-10-22

Tested these 1.25G SFP modules across Ubiquiti and Aruba switches. 100% compatible!

100 Helpful vote Comments

S***e

Chile

Verified Purchase

5 .0

2025-10-13

Top-notch SC simplex interface transceiver!

155 Helpful vote Comments

M***t

Ukraine

Verified Purchase

5 .0

2025-10-06

Great price for bulk server room deployment.

246 Helpful vote Comments

J***s

Portugal

Verified Purchase

4 .0

2025-10-02

Box arrived a bit dented, but the 1.25G BiDi module works flawlessly.

15 Helpful vote Comments

K***n

Portugal

Verified Purchase

5 .0

2025-09-25

Perfect 40km transmission for our campus fiber network!

46 Helpful vote Comments

S***l

Norway

Verified Purchase

5 .0

2025-09-10

Needed an industrial temperature SFP for an outdoor cabinet, this handles -40°C easily. ❄️

143 Helpful vote Comments

J***n

Germany

Verified Purchase

5 .0

2025-08-25

Works instantly with my Mikrotik router. (^_^)

203 Helpful vote Comments

N***r

United Arab Emirates

Verified Purchase

5 .0

2025-06-04

Great DOM support. Highly recommended for Cisco switches.

122 Helpful vote Comments

D***n

Mexico

Verified Purchase

5 .0

2025-05-24

Doing a massive server room batch deployment and needed reliable OEM compatible SFP modules. These synced instantly with our mixed Cisco and Juniper backbone. Incredible cost savings without sacrificing any network reliability.

166 Helpful vote Comments