The Cisco-compatible SFP transceiver provides up to 20km of 1000Base-BX throughput over single-mode fiber (SMF) using 1310nm-TX/1550nm-RX wavelengths via LC simplex connectors. This bi-directional unit must be used with another transceiver or network equipment of complementary wavelengths. It provides 1000BASE Ethernet connectivity options for Fast Ethernet, Telecom and Data Centers.

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Cisco GLC-BX-20U Compatible 1000BASE-BX BiDi SFP 1310nm-TX/1550nm-RX 20km DOM Simplex LC SMF Transceiver Module
Hot #39143
Hot #39143
£9.40 exc. VAT
FS P/N: SFP-GE-BX£11.28 inc. VAT
FS P/N: SFP-GE-BX
71.8K Sold
242 Reviews
8 Questions
Transceiver Models:
95 In UK Warehouse, Get It By 30 Nov 2023
1203 In Global Warehouse, Get It By 12 Dec 2023
330 Back in stock, Recently Get It By 21 Dec 2023
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Deliver to London, E15 2PP
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5-Year Warranty
30-Day Returns
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Connectivity Solutions
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Cisco GLC-BX-20U Compatible 1000BASE-BX-U SFP Transceiver Module (SMF, 1310nm-TX/1550nm-RX, 20km, LC, DOM)
Specifications
Cisco Compatible
GLC-BX-20U
Vendor Name
FS
Form Factor
SFP
Max Data Rate
1000Mbps
Wavelength
1310nm-TX/1550nm-RX
Max Cable Distance
20km
Connector
Simplex LC
Optical Components
FP BiDi
Media
SMF
DOM Support
Yes
TX Power
-9~-3dBm
Receiver Sensitivity
<-20dBm
Commercial Temperature Range
0 to 70°C (32 to 158°F)
Protocols
Fast Ethernet, Gigabit Fibre Channel, MSA Compliant
Quality Testing Program
Quality Testing Program

Optical Transceivers Testing Learn more
Quality Certifications
To get the detailed certification, please go to the Product Compliance Status for download.
Please Note: Installing a third party transceiver does not void your network equipment warranty. Network equipment manufacturers all have guidelines stating that warranty support on their products will not be affected.
Connectivity Solutions
Scenario 1

Scenario 2

Scenario 1

Scenario 2

Features
1G Connectivity for Data Center
Featured with low power consumption, the BIDI SFP transceivers provides a cost-efficient solution via using a single-fiber solution for Gigabit Ethernet applications.
Tested in Host Devices for Proven Interoperability
Every unit is quality tested for compatibility in the targeted switch environment, which guarantees flawless operations.

Comprehensive Testing Increases Reliability
Qualified through a rigorous process with advanced equipments to ensure you get the high quality and reliable optics.
Optical Spectrum Test
No Packet Loss & CRC
Eye Pattern Test
Mask Margin >20%
Bit Error Rate Test
BER 1E-12
Temperature Test
0~70°C
Videos
Specifications
Cisco GLC-BX-20U Compatible 1000BASE-BX-U SFP Transceiver Module (SMF, 1310nm-TX/1550nm-RX, 20km, LC, DOM)
The Cisco-compatible SFP transceiver provides up to 20km of 1000Base-BX throughput over single-mode fiber (SMF) using 1310nm-TX/1550nm-RX wavelengths via LC simplex connectors. This bi-directional unit must be used with another transceiver or network equipment of complementary wavelengths. It provides 1000BASE Ethernet connectivity options for Fast Ethernet, Telecom and Data Centers.
Specifications
Cisco Compatible
GLC-BX-20U
Vendor Name
FS
Form Factor
SFP
Max Data Rate
1000Mbps
Wavelength
1310nm-TX/1550nm-RX
Max Cable Distance
20km
Connector
Simplex LC
Optical Components
FP BiDi
Media
SMF
DOM Support
Yes
TX Power
-9~-3dBm
Receiver Sensitivity
<-20dBm
Commercial Temperature Range
0 to 70°C (32 to 158°F)
Protocols
Fast Ethernet, Gigabit Fibre Channel, MSA Compliant
Quality Testing Program
Quality Testing Program

Optical Transceivers Testing Learn more
Quality Certifications
To get the detailed certification, please go to the Product Compliance Status for download.
Please Note: Installing a third party transceiver does not void your network equipment warranty. Network equipment manufacturers all have guidelines stating that warranty support on their products will not be affected.
Connectivity Solutions
Scenario 1

Scenario 2

Scenario 1

Scenario 2

Features
1G Connectivity for Data Center
Featured with low power consumption, the BIDI SFP transceivers provides a cost-efficient solution via using a single-fiber solution for Gigabit Ethernet applications.
Tested in Host Devices for Proven Interoperability
Every unit is quality tested for compatibility in the targeted switch environment, which guarantees flawless operations.

Comprehensive Testing Increases Reliability
Qualified through a rigorous process with advanced equipments to ensure you get the high quality and reliable optics.
Optical Spectrum Test
No Packet Loss & CRC
Eye Pattern Test
Mask Margin >20%
Bit Error Rate Test
BER 1E-12
Temperature Test
0~70°C
Videos
Questions & Answers
All (8)Compatible Modules (1)Conventional vs BIDI (1)Matched Attenuator (1)Matching Cables (1)Matching Transceivers (1)Parameter (1)Transmission (1)Work with DWDM Mux (1)
Customer Reviews
J***t
United States
11 Nov 2023
Well packaged and after plugging in to my TP-Link Omada router it instantly works! Using it to communicate with my ISP so I didn’t need the corresponding module for the other side. I was contacted about this by an FS representative, kudos for that !
Verified Purchase
Helpful 0
Comment 0L***u
Romania
17 Oct 2023
what is wrong with your site?
works like shit.. and i remember this issue is very old..
is your website not important to your business?
dont think i order from you again
works like shit.. and i remember this issue is very old..
is your website not important to your business?
dont think i order from you again
Verified Purchase
Helpful 0
Comment 0B***n
United States
3 Aug 2023
Perfect, No issues did exactly what it was supposed to do.
Verified Purchase
Helpful 0
Comment 0See all reviews
Resources
£9.40 exc. VAT
£11.28 inc. VAT
95 In UK Warehouse
1203 In Global Warehouse