Will this 1G BiDi SFP work smoothly if I connect one end to a Cisco catalyst switch and the other to an HPE router?

Yes, absolutely! The LS-BL49311G-20C is strictly MSA compliant. We’ve ran extensive multi-brand switch compatibility tests on it, ensuring seamless OEM interoperability between Cisco, HPE, Juniper, and other major vendors without throwing any unsupported transceiver errors on your dashboard.

Our telecom project is on a tight deadline. What's the lead time like if we need 500 of these 20km transmission SMF modules shipped to the US?

We maintain deep warehouse inventory levels to guarantee supply chain stability. A bulk order of 500 units typically processes and ships within 3 days. Expedited transit to the US takes roughly 3 to 6 business days, ensuring you'll hit your strict deployment schedule.

Quick check before I buy—can I use OM3 multimode patch cables with this, or does it exclusively require single-mode fiber?

This optical module features a specialized DFB transmitter and PIN receiver engineered exclusively for Single Mode Fiber (SMF) to achieve its 20km reach. Using Multimode fiber (like OM3 or OM4) will cause severe signal loss. Always pair it with an SMF simplex LC patch cable for optimal performance!

This model shows a 0 to 70°C operating temperature. Do you have an industrial version that can survive harsher outdoor enclosures?

Yes! While the LS-BL49311G-20C is commercial grade—making it perfect for indoor, climate-controlled scenarios—we also offer the LS-BL49311G-20I industrial grade variant. The "I" version handles extreme temperatures from -40 to 85°C, which is ideal for rugged cell site backhaul and unconditioned remote outdoor cabinets.

Is this 1.25Gbps transceiver fully compliant with standard industry protocols for our campus fiber network?

Yes. The LS-BL49311G-20C complies fully with Fast Ethernet, Gigabit Fibre Channel standards, and the SFP Multi-Source Agreement (MSA). It meets all essential regulatory certifications to guarantee safe, reliable, and compliant networking in complex enterprise infrastructure environments.

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H3C SFP-GE-LX20-D-SM1490-A Compatible LINK-PP 1G SFP BiDi 1490nm-TX/1310nm-RX 20km Simplex LC DOM SMF Optical Transceiver Module

Name: H3C SFP-GE-LX20-D-SM1490-A Compatible LINK-PP 1G SFP BiDi 1490nm-TX/1310nm-RX 20km Simplex LC DOM SMF Optical Transceiver Module
Brand: LINK-PP
SKU: 215400
Price: 12.728 USD
Availability: InStock
Rating: 5 (20 reviews)

# 215400

Product: H3C SFP-GE-LX20-D-SM1490-A Compatible LINK-PP 1G SFP BiDi 1490nm-TX/1310nm-RX 20km Simplex LC DOM SMF Optical Transceiver Module
SKU: 215400
P/N: LS-BL49311G-20C
Price: $ 14.8
Stock: 2629 in Stock
Sold: 1.2K
Product URL: https://www.l-p.com/products/477410.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

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$ 14.8

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$ 14.06

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$ 13.616

3000

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Manufacture: LINK-PP

P/N: LS-BL49311G-20C

Compatible:: Cisco; LINK-PP; Alcatel-Lucent; Brocade; DELL; Extreme; FS; Fortinet; Generic; H3C; HPE; HW; Juniper; Netgear

Compatible P/N:: JD098B | 10km; JD099A | 10km; SFP-GE-10-SM1310-BIDI | 10km; SFP-GE-10-SM1550-BIDI | 10km; SFP-GE-LX-SM1310-BIDI | 10km; SFP-GE-LX-SM1490-BIDI | 10km; SFP-GE-20-SM1310-BIDI | 20km; SFP-GE-20-SM1550-BIDI | 20km; SFP-GE-LX20-D-SM1490-A | 20km; SFP-GE-LX20-SM1310 | 20km; E1MG-1G-BXD-40 | 40km; SFP-GE-LH40-D-SM1490-A | 40km; SFP-GE-LH40-SM1310-BIDI | 40km; SFP-GE-PX40-U-SM1310-A | 40km; MGBIC-BX80-D | 80km; SFP-GE-LH70-SM1490-BIDI | 80km; MGBIC-BX120-U | 120km; SFP-GE-120-SM1550-A | 120km; SFP-1G45-BX160 | 160km; SFP-1G45-BX160-I | 160km; SFP-1G54-BX160 | 160km; SFP-1G54-BX160-I | 160km

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H3C SFP-GE-LX20-D-SM1490-A Compatible LINK-PP 1G BiDi SFP Specifications

The H3C SFP-GE-LX20-D-SM1490-A Compatible LINK-PP module is a high-performance 1G BiDi SFP optical transceiver engineered for highly reliable Gigabit Ethernet connections. This single-mode fiber module operates efficiently over 20km distances using a simplex LC interface. Featuring 1490nm-TX and 1310nm-RX wavelengths, this commercial-grade optical module ensures seamless networking performance for modern enterprise infrastructure upgrades.

H3C Part Number	SFP-GE-LX20-D-SM1490-A	Vendor Name	LINK-PP
Form Factor	SFP	Max Data Rate	1.25Gbps
Wavelength	1490nm-TX/1310nm-RX	Max Cable Distance	20km
Connector	Simplex LC	Media	SMF
Transmitter Type	DFB	Receiver Type	PIN
TX Power	-9 to 0dBm	RX Power	-23 to -1dBm
Receiver Sensitivity	<-23dBm	DOM Support	Yes
Operating Temperature Range	0 to 70°C	Protocols	Fast Ethernet, Gigabit Fibre Channel, MSA Compliant

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Q: Will this 1G BiDi SFP work smoothly if I connect one end to a Cisco catalyst switch and the other to an HPE router? By E***n on 2025-12-14

A: Yes, absolutely! The LS-BL49311G-20C is strictly MSA compliant. We’ve ran extensive multi-brand switch compatibility tests on it, ensuring seamless OEM interoperability between Cisco, HPE, Juniper, and other major vendors without throwing any unsupported transceiver errors on your dashboard. By admin on 2025-12-14
Q: Our telecom project is on a tight deadline. What's the lead time like if we need 500 of these 20km transmission SMF modules shipped to the US? By B***e on 2025-11-16

A: We maintain deep warehouse inventory levels to guarantee supply chain stability. A bulk order of 500 units typically processes and ships within 3 days. Expedited transit to the US takes roughly 3 to 6 business days, ensuring you'll hit your strict deployment schedule. By admin on 2025-11-16
Q: Quick check before I buy—can I use OM3 multimode patch cables with this, or does it exclusively require single-mode fiber? By M***z on 2025-11-02

A: This optical module features a specialized DFB transmitter and PIN receiver engineered exclusively for Single Mode Fiber (SMF) to achieve its 20km reach. Using Multimode fiber (like OM3 or OM4) will cause severe signal loss. Always pair it with an SMF simplex LC patch cable for optimal performance! By admin on 2025-11-02
Q: This model shows a 0 to 70°C operating temperature. Do you have an industrial version that can survive harsher outdoor enclosures? By D***l on 2025-10-14

A: Yes! While the LS-BL49311G-20C is commercial grade—making it perfect for indoor, climate-controlled scenarios—we also offer the LS-BL49311G-20I industrial grade variant. The "I" version handles extreme temperatures from -40 to 85°C, which is ideal for rugged cell site backhaul and unconditioned remote outdoor cabinets. By admin on 2025-10-14
Q: Is this 1.25Gbps transceiver fully compliant with standard industry protocols for our campus fiber network? By R***z on 2025-10-07

A: Yes. The LS-BL49311G-20C complies fully with Fast Ethernet, Gigabit Fibre Channel standards, and the SFP Multi-Source Agreement (MSA). It meets all essential regulatory certifications to guarantee safe, reliable, and compliant networking in complex enterprise infrastructure environments. By admin on 2025-10-07

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E***s

Mexico

Verified Purchase

5 .0

2026-06-09

Flawless OEM compatibility across our Fortinet gear.

131 Helpful vote Comments

L***z

Costa Rica

Verified Purchase

5 .0

2026-04-16

I ran extensive multi-brand switch compatibility tests with this 1G BiDi SFP on Cisco, HPE, and Netgear. The 1490nm-TX/1310nm-RX WDM technology handled our enterprise infrastructure upgrade without a single CRC error. Highly reliable!

62 Helpful vote Comments

M***l

Netherlands

Verified Purchase

5 .0

2026-04-09

Nice operating temperature stability for indoor cabinets.

200 Helpful vote Comments

C***r

Ukraine

Verified Purchase

5 .0

2026-04-07

Affordable 20km transmission SMF module, highly recommended.

188 Helpful vote Comments

M***z

Netherlands

Verified Purchase

5 .0

2026-03-31

Great 1490nm-TX/1310nm-RX module for campus fiber networking!

190 Helpful vote Comments

E***g

Austria

Verified Purchase

5 .0

2026-02-21

Upgraded my home 10G NAS setup using this simplex LC fiber module for 1G links.

160 Helpful vote Comments

C***s

Canada

Verified Purchase

5 .0

2026-02-16

The 20km transmission distance is accurate. Perfect for our distant MAN connections.

106 Helpful vote Comments

D***t

United Arab Emirates

Verified Purchase

5 .0

2026-02-15

Exactly the 1G SFP we needed.

129 Helpful vote Comments

P***r

Colombia

Verified Purchase

5 .0

2025-12-11

Solid 1G BiDi SFP. Works on Juniper switches.

71 Helpful vote Comments

A***e

Colombia

Verified Purchase

5 .0

2025-11-14

Excellent simplex LC transceiver for my home NAS.

205 Helpful vote Comments

R***n

Colombia

Verified Purchase

5 .0

2025-11-13

Plug and play on my Dell equipment. (y)

201 Helpful vote Comments

C***a

Spain

Verified Purchase

5 .0

2025-11-06

Real-time DOM monitoring is a lifesaver for our data center batch deployment projects.

79 Helpful vote Comments

S***e

Canada

Verified Purchase

5 .0

2025-10-29

MSA compliant and DOM works flawlessly! \o/

52 Helpful vote Comments

R***n

Ireland

Verified Purchase

5 .0

2025-10-28

Fits nicely into our outdoor cabinets, surviving the standard 0 to 70°C operating temperature.

68 Helpful vote Comments

A***a

Austria

Verified Purchase

5 .0

2024-03-13

Order was easy, price was competitive and the shipping was Fast.

32 Helpful vote Comments

B***g

Malaysia

Verified Purchase

5 .0

2024-02-29

Products delivered as expected. Arrived a day early. Completely satisfied.

53 Helpful vote Comments

E***o

Netherlands

Verified Purchase

5 .0

2024-01-25

No problem so far after quite a few orders over the past few years.

64 Helpful vote Comments

K***m

United States

Verified Purchase

5 .0

2024-01-11

Very good and consistent product.

76 Helpful vote Comments

M***e

France

Verified Purchase

5 .0

2023-03-20

Technical advise is always acurate and friendly.

118 Helpful vote Comments

K***n

Hungary

Verified Purchase

5 .0

2023-01-18

Service was good, prompt delivery.

84 Helpful vote Comments

Verified Purchase

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H3C SFP-GE-LX20-D-SM1490-A Compatible LINK-PP 1G SFP BiDi 1490nm-TX/1310nm-RX 20km Simplex LC DOM SMF Optical Transceiver Module

Product Details

H3C SFP-GE-LX20-D-SM1490-A Compatible LINK-PP 1G BiDi SFP Specifications

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Key Features of H3C SFP-GE-LX20-D-SM1490-A Compatible LINK-PP 1.25G SFP

H3C SFP-GE-LX20-D-SM1490-A Compatible LINK-PP 1G BiDi SFP Optical Module

SFP-GE-LX20-D-SM1490-A: 1G Connectivity for Metropolitan Area Networks

SFP-GE-LX20-D-SM1490-A Module with 1490nm-TX and 1310nm-RX Wavelength

SFP-GE-LX20-D-SM1490-A Module Supporting 20km Transmission

SFP-GE-LX20-D-SM1490-A Module with Simplex LC Interface

SFP-GE-LX20-D-SM1490-A Module with DOM for Real-Time Monitoring

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