Cudy

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

R 249.00

SKU: SM100GSB-20AB

Shipping R150 anywhere in SA. Shipping cost added at checkout

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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

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FREQUENTLY ASKED QUESTIONS

How long does order processing take?

We process all orders within 1-2 business days once payment has cleared. You’ll receive an email confirmation once your order is on its way.

How long does delivery take?

Delivery usually takes 1–3 business days after processing, depending on your location. Some remote areas may take a bit longer.

Do you ship everywhere in South Africa?

Yes, we offer nationwide shipping. However, certain high-risk or no-go areas may experience delays. We’ll contact you if this applies.

What payment methods do you accept?

We accept secure online payments via credit/debit card, EFT, Payfast, Zapper and Mobicred . Please note that orders are only processed once payment has cleared in our account.

What if the item I want is out of stock?

If an item is marked as out of stock, it won’t be available for direct purchase on the website. However, if you're still interested, you can contact us, and we may be able to place a manual backorder for you—subject to supplier availability.

 

Please note:

- Manual backorders are only processed after full payment via EFT or secure payment link.

- Lead times may vary depending on supplier stock and shipping timelines.

Can I track my order?

Absolutely! Once your order is shipped, you’ll receive a tracking number via email to monitor the delivery in real time.

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