SKU: 19615394280

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

Sale price$116.55 Regular price$129.50
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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: 19615394280

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Amazon Customer
Lexington, US
★★★★★ 5
Effective Mineral Sun Protection
Style: SPF 30, Size: 3 Ounce (Pack of 1)
This mineral sunscreen does a great job at blocking the sun. It applies smoothly, although it does have a slightly pasty texture which is typical of mineral sunscreens. I love that it was on the thinner side for consistency which makes it easy to apply evenly. We used it extensively last summer and it kept us well protected. We'll definitely be using it again this summer!
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Reviewed in the United States on February 13, 2025
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Cher
Whiting, US
★★★★★ 4
good consistency
Style: SPF 30, Size: 3 Ounce (Pack of 1)
It is a body lotion and for that it's great but it's a bit white for face unless you are very fair. Not shiny which is a plus and goes on evenly.
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Reviewed in the United States on April 25, 2026
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Popstar888
Bozeman, US
★★★★★ 5
This is the only sunscreen that doesn't give me an allergic reaction
Style: SPF 30, Size: 3 Ounce (Pack of 1)
I've tried many other sunscreens and all of them give me an allergic reaction, or they are very thick and leave a white residue. This, though, does neither of those things. It's just the right consistency. I've purchased this twice now and will purchase more in the future, I'm sure.
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Reviewed in the United States on December 7, 2025
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Tatiana Wright
Dallas, US
★★★★★ 5
Best mineral sunscreen
Style: SPF 30, Size: 3 Ounce (Pack of 1)
Applies easily, smells great and hardly leaves a whitecast! One of my favorite mineral sunscreens that I’ve tried.
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Reviewed in the United States on June 17, 2024
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Karen C.
Grantham, US
★★★★★ 3
White film left
Style: SPF 30, Size: 3 Ounce (Pack of 1)
I know that mineral sunscreen is the best. But this one will leave a white film on you. I have used other sunscreens that work without the white film.
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Reviewed in the United States on June 4, 2026

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