
Optical transceiver (SFP) | 1.25 Gbps | 1310 nm | LC Duplex connector | up to 20 km | Single Mode | hot-plug function | CUDY SM100GSA-20
Code: SM100GSA-20An SFP optical transceiver designed for high-stability data transmission over fiber optics. The transceiver operates in single mode, supports a speed of 1.25 Gbps, and enables signal transmission over distances of up to 20 km, making it suitable for residential, commercial, and industrial networks. With a 1310 nm wavelength, LC duplex connector, and integrated diagnostics, this SFP module is a versatile solution for routers, network switches, media converters, and other SFP-compatible equipment.
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Technical Specifications
Type: Optical transceiver (SFP)
Model: SM100GSA-20
Manufacturer: CUDY
Data rate: 1.25 Gbps
Fiber type: Single Mode (SMF)
Mode: Duplex
Wavelength: TX 1310 nm
Connector: LC
Maximum distance: up to 20 km
Output power: −9 ~ −3 dBm
Power supply: +3.3 V
Operating temperature: 0…+70 °CFunctions
Stable and high-speed data transmission over single-mode fiber
Up to 20 km transmission distance without additional amplifiers
Integrated digital diagnostics (temperature, power, voltage)
High reliability and safe laser operation
Plug-and-play installation in SFP slots
Applications
Home user: For connecting home servers, NAS systems, or high-speed networks, as well as longer fiber links between buildings or separate rooms
Installer / IT integrator: For video surveillance systems (IP cameras, NVR), business, office, or warehouse network expansion; easy installation and replacement without system shutdown
Engineer / industrial network designer: For industrial Ethernet networks, connections in environments with increased temperature and reliability requirements, integration into automation, energy, or data transmission systemsPros
Up to 20 km transmission distance
Single Mode – minimal signal loss
Digital diagnostics (SFF-8472)
Low EMI, good ESD protection
Wide compatibility with SFP equipment
Cons
Not suitable for multi-mode (MM) fiber
Requires LC-type duplex cable
Limited to 1.25 Gbps speed (not 10G)
Illustrative image may have been created using AI. The appearance of the product may differ slightly from the image shown. Please refer to the technical specification.This product is marked with the CE label, which confirms that it complies with all applicable European Union directives and regulations. CE marking is not just a formality – it is an important indicator of quality and safety, ensuring that the product has been properly assessed, tested, and can be safely used throughout the EU market.
CE certification means that the product has been evaluated according to the main criteria:
Safety requirements – ensures that the product does not pose a risk to the user or the environment
Electromagnetic compatibility (EMC) – the device does not interfere with other equipment and is resistant to external disturbances
Environmental standards – complies with current ecological and material usage requirements
Operational reliability – the product is suitable for long-term use according to its intended purposeCE marking allows this product to:
be legally supplied and used in all European Union countries
ensure a high level of quality and safety
be used in residential, commercial, and industrial environmentsThe CE mark is a declaration of the manufacturer’s responsibility, confirming that the product complies with all applicable standards and has been assessed according to EU legislation.
What does this mean for you as a buyer?
Safe use in everyday activities
Reliable performance and reduced risk of failure
Compliance with EU standards and requirements
Suitability for professional solutions
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