SKU: 66963946953

Cudy SM100GSA-20 1.25Gb/s Single-Mode SFP Transceiver Module (20km)

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Description

Cudy SM100GSA-20 1.25Gb/s Single-Mode SFP Transceiver Module (20km)The Cudy SM100GSA 20 Single Mode 1. 25Gb s SFP Module delivers reliable, high speed networking for enterprise, data centre, and telecom environments. Designed with an LC connector and operating at a 1310nm FP laser wavelength, this SFP transceiver ensures stable performance for up to 20km transmission over single mode fiber (SMF). Fully compliant with the SFP Multi Source Agreement (MSA), it offers seamless integration with a wide range of networking

The Cudy SM100GSA-20 Single Mode 1.25Gb/s SFP Module delivers reliable, high-speed networking for enterprise, data centre, and telecom environments. Designed with an LC connector and operating at a 1310nm FP laser wavelength, this SFP transceiver ensures stable performance for up to 20km transmission over single-mode fiber (SMF). Fully compliant with the SFP Multi-Source Agreement (MSA), it offers seamless integration with a wide range of networking equipment, making it ideal for high-bandwidth applications such as backbone links, long-distance data transmission, and secure point-to-point connections.

Engineered for precision and durability, the SM100GSA-20 features a PIN photodetector for excellent receive sensitivity and a low jitter optical signal that complies with IEEE 802.3z and ANSI Fibre Channel standards. Its LVPECL-compatible data I/O interface and +3.3V single power supply ensure efficient operation, while low EMI and robust ESD protection provide long-term reliability in demanding environments. The module meets laser safety standard IEC-60825, ensuring safe operation in fiber optic networks.

Equipped with Digital Diagnostic Monitoring (DDM) compliant to SFF-8472, the SM100GSA-20 allows administrators to track real-time parameters such as temperature, voltage, and optical power, improving network maintenance and troubleshooting. Its signal ground isolation to case helps reduce interference, ensuring consistent and uninterrupted data transmission. RoHS compliance makes it an environmentally responsible choice without compromising on performance.

With an operating temperature range of 0°C to +60°C, the Cudy SM100GSA-20 is built for versatility, suitable for both controlled data centre environments and remote networking sites. Its compact hot-pluggable design enables quick installation and replacement without service downtime, ensuring maximum network uptime. Whether upgrading existing infrastructure or expanding network reach, this SFP module offers the stability, efficiency, and range needed for modern high-performance fiber networks.

FEATURES:

SFP package with LC connector
1310nm FP laser and PIN photo detector
Up to 20km transmission on SMF
+3.3V single power supply
LVPECL compatible data input/output interface
Low EMI and excellent ESD protection
laser safety standard IEC-60825 compliant
Compatible with RoHS
Digital Diagnostic SFF-8472 compliant
Signal Ground Isolated to Case

SPECIFICATIONS:

Transmitter Section Center Wavelength o 1260nm (Min)/ 1310nm (Typical) 1360 nm (Max)Spectral Width(RMS): 4 nm (Max)Average Output Power Po: -9 (Min)/ -3 dBm (Max)Extinction Ratio: 8dB (Min)Rise/Fall Time(20%~80%): 300 ps (Max)Total Jitter: 0.43 UI (Max)Optical Eye Diagram: IEEE 802.3z and ANSI Fibre Channel CompatibleInput Differential Impendence: 90 Ohm(Min)/ 100 Ohm (Typical)/ 110 Ohm (Max)Data Input Swing Differential: 500mV (Min)/ 2400mV (Max)TX Disable: Disable - 2.0V (Min)/ Vcc (Max), Enable - 0V (Min)/ 0.8V (Max)TX Fault: Assert - 2.0V (Min)/ Vcc (Max), Deassert - 0V (Min)/ 0.8V (Max)
Center Wavelength o 1260nm (Min)/ 1310nm (Typical) 1360 nm (Max)
Spectral Width(RMS) 4 nm (Max)
Average Output Power Po -9 (Min)/ -3 dBm (Max)
Extinction Ratio 8dB (Min)
Rise/Fall Time(20%~80%) 300 ps (Max)
Total Jitter 0.43 UI (Max)
Optical Eye Diagram IEEE 802.3z and ANSI Fibre Channel Compatible
Input Differential Impendence 90 Ohm(Min)/ 100 Ohm (Typical)/ 110 Ohm (Max)
Data Input Swing Differential 500mV (Min)/ 2400mV (Max)
TX Disable Disable - 2.0V (Min)/ Vcc (Max), Enable - 0V (Min)/ 0.8V (Max)
TX Fault Assert - 2.0V (Min)/ Vcc (Max), Deassert - 0V (Min)/ 0.8V (Max)
Receiver Section Center Wavelength: 1260 nm (Min)/ 1620 nm (Max)Receiver Sensitivity: -22 dBm (Max)Receiver Overload: -3 dBm (Min)Return Loss: 12 dB (Min)LOS Assert: -36 dBm (Min)LOS Dessert: -23 dBm (Max)LOS Hysteresis 0.5 5 (Min)Output Differential Impendence: 100 Ohm (Typical)Data Input Swing Differential: 370mV (Min)/ 2000mV (Max)Rx_LOS: Assert - 2.0V (Min)/ Vcc (Max), Deassert - 0V (Min)/ 0.8V (Max)
Center Wavelength 1260 nm (Min)/ 1620 nm (Max)
Receiver Sensitivity -22 dBm (Max)
Receiver Overload -3 dBm (Min)
Return Loss 12 dB (Min)
LOS Assert -36 dBm (Min)
LOS Dessert -23 dBm (Max)
LOS Hysteresis 0.5 5 (Min)
Output Differential Impendence 100 Ohm (Typical)
Data Input Swing Differential 370mV (Min)/ 2000mV (Max)
Rx_LOS Assert - 2.0V (Min)/ Vcc (Max), Deassert - 0V (Min)/ 0.8V (Max)
Storage Temperature (Min/Max) -40/85°C
Supply Voltage (Min/Max) 0/ +3.6V
Operating Relative Humidity (Min/Max) 5/ 95%
Product Dimensions 5.5 x 13.5 x 0.9 cm

WHAT'S IN THE BOX:

  • Cudy SM100GSA-20 Single Mode 1.25Gb/s SFP Module 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: 66963946953

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Scott Mautino
Waukegan, US
★★★★★ 5
By far the best cooling pillow case I’ve bought highly recommend
Color: Blue, Size: Standard, Set name: Silky
Highly recommend best cooling pillow case I’ve bought very soft and comfortable seems to be made from good material as well
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Reviewed in the United States on May 3, 2026
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Akeem
Alexandria, US
★★★★★ 5
Comfortable and stays cool
Color: White-cooling Basic, Size: Queen(Pack of 1)
Great pillow. When i opened it, i noticed a strange smell, i assumed its the smell of whatever they use to make the pillow stay cool. You have to fluff it for a good amount of time to make sure the cooling agent spreads well in the foam. Is what i assumed atleast. Its a perfect amount of softness for me. Pair it with some bamboo pillow cases and you got a good night of sleep
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Reviewed in the United States on May 9, 2026
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Kim Groetsch
Lexington, US
★★★★★ 5
BEST, MOST COMFORTABLE PILLOWS EVER!
Color: White-cooling Basic, Size: Queen(Pack of 2)
I've used others.BEST PILLOWS EVER! Firm, cooling and supportive. LOVE THESE!
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Reviewed in the United States on May 28, 2026
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Juanita
San Leandro, US
★★★★★ 4
Comfortable and Supportive, but Adjust the Filling
Color: White-cooling Basic, Size: Queen(Pack of 2), Color: White-cooling Basic, Size: Queen(Pack of 2)
I’m very happy with this pillow. The size is big and it feels soft while still providing good support, perfect for midnight scrolling on TikTok. One thing to keep in mind is that it can feel a little too tall if you use all of the filling that comes with it. The good news is that you can easily adjust the amount of filling to find the height that works best for your sleeping position. Once I customized it, it was much more comfortable. Overall, great quality, comfortable, and worth the purchase.
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Reviewed in the United States on June 3, 2026
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Love Leigh Angel
Louisville, US
★★★★★ 5
BEST PILLOWS EVER!!!
Color: White-cooling Basic, Size: Queen(Pack of 2)
I am very picky with my pillows because I have a bad neck and I can never seem to find a good pillow. But I tried this pillow because it had everything I was looking for and the price was great! You get two of them and they are absolutely awesome.! normally I would need to lay on two pillows to try and get comfortable but with these pillows I just lay on one and I wake up with no neck pain. They really have a nice cooling effect. They actually puff up immediately after opening them. All you have to do is just shake them up and the pillow just puffs straight up.. It comes with extra cushioning if you want it to make it firmer and if you don’t want it as firm as it is, you can actually take some out. It really is such a beautiful pillow. It’s perfect in every way to me being such a picky pillow person. You just lay your head down on it and it forms around your neck and your head and when you get up, it goes right back to its normal form. It doesn’t get flat and I love it. I completely recommend this to anyone who is a person who has a hard time finding a really good pillow.
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Reviewed in the United States on April 12, 2026

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