SKU: 3354468794

Cudy 1.25G Bi-Directional Single-Mode SFP Transceiver, 20km, Single LC Connector

Sale price$113.70 Regular price$126.33
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Ships within 48 hours · Estimated delivery Jul 25 - Jul 30

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Description

Cudy 1.25G Bi-Directional Single-Mode SFP Transceiver, 20km, Single LC ConnectorCudy's CD SFP SMB is your answer for efficient and cost effective single mode fibre deployments! These bi directional modules redefine connectivity standards with a powerful design optimised for 1. 25 Gbps transmission over distances of up to 20km. The CD SFP SMB modules are sold as a pair and feature a smart SFP package with LC connectors, ensuring cross vendor compatibility. What distinguishes them is their novel application of bi directional

Cudy's CD-SFP-SMB is your answer for efficient and cost-effective single-mode fibre deployments! These bi-directional modules redefine connectivity standards with a powerful design optimised for 1.25 Gbps transmission over distances of up to 20km.

The CD-SFP-SMB modules are sold as a pair and feature a smart SFP package with LC connectors, ensuring cross-vendor compatibility. What distinguishes them is their novel application of bi-directional technology, which enables duplex transmission on a single fibre by utilising two distinct wavelengths for TX and RX on the same optical strand. This not only improves performance but also significantly lowers installation costs.

Choose between the SM100GSB-20A with a 1310nm FP laser and a 1550nm PIN photodetector or the SM100GSB-20B with a 1550nm DFB laser and a 1310nm PIN photodetector to meet your specific requirements.

These modules provide dependable performance because they are powered by a single +3.3V power supply and have an LVPECL-compatible data input/output interface. The CD-SFP-SMB provides a strong and secure connection thanks to its low EMI and excellent ESD protection. These modules prioritise environmental sustainability while adhering to RoHS and SFF8472 standards.

FEATURES:

SFP package with LC connector
SM100GSB-20A 1310nm FP Laser and 1550nm PIN photodetector
SM100GSB-20B 1550nm DFB Laser and 1310nm PIN photodetector
Up to 20 km transmission on SMF
+3.3V single power supply
LVPECL-compatible data input/output interface
Low EMI and excellent ESD protection
Compatible with RoHS
Compatible with SFF8472

SPECIFICATIONS:

Ethernet Channel Speed 1.25 GB/s
Fibre Channel Speed 1.06 Gb/s
Form Factor SFP (BiDi)
Mode Single Mode
Supported Distance 20km
Wavelength 1310nm / 1550nm
Optical Eye Diagram IEEE 802.3z and ANSI Fibre Channel Compatible
Input Differential Impendence (Min) (Max) 90, 110 Ohm
Data Input Swing Differential (Min) (Max) 500, 2400 mV
Output differential impendence (Typ) 100 Ohm
Data Input Swing Differential (Min) (Max) 370, 2000 mV
Supply Voltage (Min) (Max) 3.15, 3.45 V
Operating Case Temperature (Min) (Max) 0, 70 ℃
Voltage 3-15 ~ 3.45 V
Bias Current 10 ~ 80 mA
Tx Power -9 ~ -3 dBm
Rx Power -26~-3 dBm

WHAT’S IN THE BOX:

  • Cudy 1.25Gbps BIDI SFP Optical Transceiver 20Km DDM x1
  • Installation Guide x1
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 3354468794

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4.5 ★★★★★
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Verified Purchase
Curtis W
Charlottesville, US
★★★★★ 4
Very sturdy legs!
Style: Zig Zag, Size: 28 inch, Style: Zig Zag, Size: 28 inch
The legs are very well built and good looking, however, the screws included for installation are only 9/16" long which is not nearly enough for table legs of this size. I installed the legs on a 30" x 83" live edge oak tabletop that is full 2" thick. I purchased 1 1/4" screws for the install making the table very solid.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 15, 2025
D
Verified Purchase
Dave M.
Lexington, US
★★★★★ 5
Heavy duty. Looks nice.
Style: Zig Zag, Size: 28 inch
These are great. They are VERY heavy duty. I used them with a butcher block counter to make a desk. Worked perfectly.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 20, 2026
N
Verified Purchase
Naperville Jon
Pawtucket, US
★★★★★ 3
Good and attractive with a few finish issues.
Style: Zig Zag, Size: 28 inch
These are attractive and functional and work well. Some of the welds were not as precise as I would have liked, and a few places (not conspicuous) are missing a little of the finish, but overall they do what they're supposed to do. I used them with a butcherblock counter top to create a desk for my office.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 19, 2025
D
Verified Purchase
D WARREN
Carnegie, US
★★★★★ 5
Very versatile table for many uses.
Style: Rectangular, Size: 28 inch
These legs work great for replacing a free standing rv dinette by reusing the table top . We didn’t need a table that converted to a bed. Nice fit and finish and great quality.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 14, 2026
A
Verified Purchase
Adrianna
Belleville, US
★★★★★ 5
very good
Style: Zig Zag, Size: 28 inch
These are very stable and worked perfectly with our butcher blocks! The size and length are true to what it says! you can adjust height.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 7, 2026

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