SKU: 40027033501

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

Sale price$98.10 Regular price$109.00
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Ships within 48 hours · Estimated delivery Aug 11 - Aug 16

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Description

Cudy Single Mode 1.25G LC Bi-Directional SFP 20kmCudy'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: 40027033501

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Shawn
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★★★★★ 5
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so much cheaper than OEM but works just the same
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Reviewed in the United States on March 17, 2026
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Pao
Natrona Heights, US
★★★★★ 4
Muy buen producto
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Hoy cambié todo! por ahora funciona muy bien! muy alegre con la compra
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Reviewed in the United States on August 10, 2025
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Amy Mc
Pawtucket, US
★★★★★ 5
Great maintenance kit!
Number of Items: 1, Style: X10 Pro Omni Accessories Kit
You have to take care of your vacc for it to work properly. This set gives you e writhing you need.
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P. Davis
Port Orchard, US
★★★★★ 5
Fit my Robotic cleaner as described by Amazon!
Number of Items: 15, Style: L60 / L50 Accessories Kit
Ordered kit for replacements for my Robotic cleaners, they work well, would order again.
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Daniel J Roberts
Alexandria, US
★★★★★ 5
Has worked for me
Number of Items: 1, Style: X10 Pro Omni Accessories Kit
All the parts fit my Eufy vacuum/mop perfectly
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Reviewed in the United States on December 29, 2025

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