I'm spec'ing out a large fiber upgrade for our university campus. Do you guys offer volume discounts if we order 500+ of these Simplex SC modules?

Absolutely. We support enterprise procurement with tiered B2B pricing. For bulk orders over 500 units, please reach out to our sales team directly, and we’ll provide a custom discounted quote.

We use a mix of Cisco Catalyst and Dell Force10 switches. Will this 1G BiDi SFP interface without throwing the "unsupported transceiver" error?

Yes! The LS-SC55311G-20C is fully MSA compliant and coded for broad OEM compatibility. It works seamlessly across Cisco, Dell, and other major network platforms without requiring CLI bypass commands.

This module is rated for 0-70°C. Do you carry an industrial version of this 1550nm-TX/1310nm-RX BiDi for outdoor telecom cabinets?

Yes, we do! If your deployment faces extreme weather or harsh outdoor environments, you can search our store for the LS-SC55311G-20I model, which supports industrial wide-temperature operation from -40°C to 85°C.

Does this module take a standard SC UPC patch cable, and does it require single-mode fiber only?

Correct! It features a single Simplex SC optical interface (UPC polish is standard) and operates exclusively over Single-Mode Fiber (SMF) for distances up to 20km.

Are these transceivers compliant with RoHS and IEEE 802.3z standards? Our datacenter has strict regulatory requirements for all incoming hardware.

Definitely. All our fiber optic modules undergo rigorous testing and are fully compliant with RoHS, CE, FCC, and IEEE 802.3z Gigabit Ethernet standards to meet global datacenter and industry requirements.

Breadcrumb: Home; Products; Optics Transceivers | SFP Modules; 1/2/4G Transceiver Modules; 1G BiDi SFP; 202201

Click to open expanded view

LINK-PP LS-SC55311G-20C 1G SFP BiDi 1550nm-TX/1310nm-RX 20km Simplex SC DOM SMF Optical Transceiver Module

Name: LINK-PP LS-SC55311G-20C 1G SFP BiDi 1550nm-TX/1310nm-RX 20km Simplex SC DOM SMF Optical Transceiver Module
Brand: LINK-PP
SKU: 202201
Price: 12.47 USD
Availability: InStock
Rating: 4.9 (25 reviews)

# 202201

Product: LINK-PP LS-SC55311G-20C 1G SFP BiDi 1550nm-TX/1310nm-RX 20km Simplex SC DOM SMF Optical Transceiver Module
SKU: 202201
P/N: LS-SC55311G-20C
Price: $ 14.5
Stock: 150 in Stock
Sold: 1.5K
Product URL: https://www.l-p.com/products/491680.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

25 Reviews

5 Questions

Request Stock

1.5K Sold

$ 14.5

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

Qty (pcs) :

Unit Price :

$ 14.5

100

$ 13.775

1000

$ 13.34

3000

$ 12.905

6000

$ 12.47

Manufacture: LINK-PP

P/N: LS-SC55311G-20C

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

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. See details

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}}

Add to wish

Specifications

Specification
Videos
Matching Products
Download
Q&A
Customer Reviews

LINK-PP LS-SC55311G-20C 1G BiDi SFP Specifications

The LINK-PP LS-SC55311G-20C is a high-performance 1G BiDi SFP transceiver meticulously engineered for Gigabit Ethernet applications. Operating seamlessly over single-mode fiber, this commercial-grade optical module delivers a robust 1.25Gbps data rate. Utilizing advanced WDM technology, it guarantees stable, high-speed fiber optic network solutions tailored for data centers and telecommunication infrastructures.

LINK-PP Part Number	LS-SC55311G-20C	Vendor Name	LINK-PP
Form Factor	SFP	Max Data Rate	1.25Gbps
Wavelength	1550nm-TX/1310nm-RX	Max Cable Distance	20km
Connector	Simplex SC	Media	SMF
Transmitter Type	DFB	Receiver Type	PIN
TX Power	-9 to 0dBm	RX Power	-23 to -1dBm
Receiver Sensitivity	-23dBm	Receiver Overload	-3dBm
DOM Support	Yes	Operating Temperature Range	0 to 70°C

Videos

Matching Products

Pictures

ID#

Description

Price

Stock

Add to Cart

Download

Product Drawing

PDF
LS-SC55311G-20C.pdf

Questions & Answers
Ask a Question

No data

Q: I'm spec'ing out a large fiber upgrade for our university campus. Do you guys offer volume discounts if we order 500+ of these Simplex SC modules? By C***z on 2026-07-08

A: Absolutely. We support enterprise procurement with tiered B2B pricing. For bulk orders over 500 units, please reach out to our sales team directly, and we’ll provide a custom discounted quote. By admin on 2026-07-08
Q: We use a mix of Cisco Catalyst and Dell Force10 switches. Will this 1G BiDi SFP interface without throwing the "unsupported transceiver" error? By M***l on 2026-04-07

A: Yes! The LS-SC55311G-20C is fully MSA compliant and coded for broad OEM compatibility. It works seamlessly across Cisco, Dell, and other major network platforms without requiring CLI bypass commands. By admin on 2026-04-08
Q: This module is rated for 0-70°C. Do you carry an industrial version of this 1550nm-TX/1310nm-RX BiDi for outdoor telecom cabinets? By D***s on 2026-01-14

A: Yes, we do! If your deployment faces extreme weather or harsh outdoor environments, you can search our store for the LS-SC55311G-20I model, which supports industrial wide-temperature operation from -40°C to 85°C. By admin on 2026-01-14
Q: Does this module take a standard SC UPC patch cable, and does it require single-mode fiber only? By M***z on 2025-11-16

A: Correct! It features a single Simplex SC optical interface (UPC polish is standard) and operates exclusively over Single-Mode Fiber (SMF) for distances up to 20km. By admin on 2025-11-16
Q: Are these transceivers compliant with RoHS and IEEE 802.3z standards? Our datacenter has strict regulatory requirements for all incoming hardware. By D***e on 2025-05-19

A: Definitely. All our fiber optic modules undergo rigorous testing and are fully compliant with RoHS, CE, FCC, and IEEE 802.3z Gigabit Ethernet standards to meet global datacenter and industry requirements. By admin on 2025-05-19

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

B***k

Colombia

Verified Purchase

4 .0

2026-07-16

Packaging was a bit dented on arrival, but this 1G SFP BiDi works flawlessly.

14 Helpful vote Comments

M***r

Panama

Verified Purchase

5 .0

2026-07-15

Temperatures stay cool at 0-70C operating temp. ❄️

116 Helpful vote Comments

P***z

Japan

Verified Purchase

5 .0

2026-07-09

As a network engineer, finding reliable third-party optics is tough. Tested this 1G SC fiber module on Arista and Mikrotik switches. It instantly recognized the 1550nm/1310nm wavelengths without override commands.

107 Helpful vote Comments

L***s

Ukraine

Verified Purchase

5 .0

2026-06-30

Procured a bulk batch of these 1G BiDi SFPs for a hospital campus network rollout. DDM natively maps to our monitoring software via SNMP. Transmit levels on 1550nm-TX are extremely stable.

129 Helpful vote Comments

C***n

Argentina

Verified Purchase

5 .0

2026-06-28

Upgraded our data center interconnects with these 1.25Gbps modules. Cost-effective with zero packet loss.

219 Helpful vote Comments

S***n

France

Verified Purchase

5 .0

2026-06-23

Replaced dead OEM optics in our campus fiber network. This Cisco compatible SFP rocks.

85 Helpful vote Comments

A***n

United States

Verified Purchase

5 .0

2026-06-02

Needed to halve our fiber usage for a remote server room interconnect. This WDM bidirectional SFP with a single SC connector was the perfect solution. Zero port errors over 30 days!

135 Helpful vote Comments

W***n

Ukraine

Verified Purchase

5 .0

2026-05-23

Deployed 50 units for base station backhaul. The 20km transmission distance is incredibly accurate.

114 Helpful vote Comments

D***r

Republic of Korea

Verified Purchase

5 .0

2026-04-04

Flawless 1550nm-TX/1310nm-RX bidirectional optics.

109 Helpful vote Comments

S***k

Finland

Verified Purchase

5 .0

2026-03-14

Ideal for our outdoor cabinet setups, despite being a commercial 0-70°C rated transceiver. ☀️

204 Helpful vote Comments

R***s

Macao

Verified Purchase

5 .0

2026-03-06

Saved physical cabling costs with Simplex SC!

49 Helpful vote Comments

P***z

Denmark

Verified Purchase

5 .0

2026-01-27

Excellent DDM/DOM data readout. I can easily monitor voltage and optical power in real-time.

50 Helpful vote Comments

L***t

Costa Rica

Verified Purchase

4 .0

2025-12-27

FedEx delayed my batch of Simplex SC modules by two days. Optics are solid though!

8 Helpful vote Comments

M***r

Panama

Verified Purchase

5 .0

2025-12-18

Tested on Ubiquiti and Juniper gear. This 1G BiDi SFP module syncs up instantly. (ง •_•)ง

190 Helpful vote Comments

W***n

Republic of Korea

Verified Purchase

5 .0

2025-11-25

Cheap and reliable Gigabit Ethernet transceiver.

124 Helpful vote Comments

J***n

Costa Rica

Verified Purchase

5 .0

2025-10-19

Ran iPerf3 across a 15km single-mode fiber loop. The LS-SC55311G-20C maintained full 1.25Gbps throughput with -12dBm RX power. Excellent Simplex SC DOM SMF optical transceiver module for enterprise IT.

158 Helpful vote Comments

S***n

Austria

Verified Purchase

5 .0

2025-10-06

Pings are stable over the 20km SMF run.

224 Helpful vote Comments

D***r

Costa Rica

Verified Purchase

5 .0