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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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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4.1 ★★★★★
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Verified Purchase
William Simonis
Alexandria, US
★★★★★ 5
Refunding/giftcards. Thank you
They were nice enough to replace my vacuum even though the battery was defective. They usually don't cover batteries. So it was a great. But they were nice enough to give me a gift card for the whole amount. Thanks
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Reviewed in the United States on February 9, 2026
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Verified Purchase
Unkle Cleo
Pawtucket, US
★★★★★ 5
Rather pricey.
Excellent vacuum, but I couldn’t justify the price knowing I have another Miele vacuum that works just as well as this one. My current Miele is 27 years old, works perfectly with all attachments, and only cost $20 several years ago. Hard to spend $500 for what I already own. However, if my current one fails, this will be its replacement.
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Reviewed in the United States on April 17, 2026
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Verified Purchase
M. P. Holmes
Massapequa, US
★★★★★ 4
Close to perfect
This model is among Miele's most recent ones, and benefits from a few small but significant improvements on that account. I'd say that all but one of the components are both beautifully made and beautifully conceived. The floor head initially strikes me as problematic, and for exactly the reason that's suggested by a great many customer reviews of Miele floor heads, which is that when attempting to vacuum even low pile carpet there is a dramatic tendency for the head to essentially glue itself to the carpet. The vacuum power needed to be set on the second lowest of four settings to be able to slide the head over the carpet at all, with either of the two settings of the floor head (carpet or bare floor). So it seems to me that Miele still hasn't figured out how to make a single, multi-purpose floor head, or at least one that isn't electrically powered with a motor in the head to rotate a brush. They do also have air-turbine powered head brushes and models with no rotating brush like the one that comes with the Guard M1. Many types in all. The noise level of this model is even lower than I had hoped and this is one feature that has been further improved - excellent. Also, note that you can replace the default exhaust filter with a separately purchased HEPA filter if that's what you want: 99.999% filtration of the bag plus the HEPA exhaust filter rather than 99.99% filtration of the bag plus the standard, thin, provided, cheaper exhaust filter. This could be important for either allergy issues or safety vacuuming where rodents have made a mess, which can be quite dangerous. Best to lightly spray with dilute chlorine bleach first. There are four exhaust filter grades to choose from. The most basic is the supplied one. Miele desperately needs to improve their documentation to help customers figure out all the variables in their very complex system of models and features. I like this machine a lot. I just need to figure out a better way to vacuum flat surfaces (floors) which are both bare and carpeted. We have almost no high pile or shag rugs (one), so I figured this basic head would be a good choice but I'm concerned that I might never choose to use it on our carpets. Not sure yet. Otherwise close to perfection. One other thing: it's too easy to attempt to insert the bag backwards and not realize it! Oh, one other thing - The cover door for the motor protection filter was stuck closed. It's supposed to snap open when pulling on the handle with modest force but a strong pull didn't to do the trick. There's a slight defect in the mold of one of the two parts where the latch functions. I eventually got it open and used a jeweler's file to very slightly take the edge off the stationary part and now it's fine, but a person could break the cover door trying to overpower the latch. This is a factory defect that's tiny but with potentially very large consequences.
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Reviewed in the United States on March 19, 2026
S
Verified Purchase
Sandy Mayfield
Port Orchard, US
★★★★★ 5
Best Investment Ever! A Vac-Mop!!!
Color: X40 Ultra/ L40 Ultra & P10 Pro /P50 Pro
These are replacement tools that fit our multipurpose vac/mop. This product is the most helpful and productive item we own. My daughter and I are free to do other things while Miss “B” is busy cleaning our floors! Such a backsaver! The floors are cleaner than manually sweeping and mopping them ourselves! It doesn’t get any better than that!
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Reviewed in the United States on April 21, 2026
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Verified Purchase
Brianna
Louisville, US
★★★★★ 5
This is a Yes!
Color: X40 Ultra/ L40 Ultra & P10 Pro /P50 Pro
I needed to change out my Dreame vacuum accessories but didn’t want to pay the huge amount for the name brand kit, this works beautifully and fit perfectly. I cannot tell a difference and it lasts just as long as the original!
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Reviewed in the United States on April 8, 2026

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