Moxa SFP-1G20BLC , SFP interface module, Tx 1550 nm content_copy

The SFP-1G20BLC from Moxa is a 1-Port Gigabit Ethernet SFP module designed for connecting industrial network infrastructures via fiber optic cables. It enables flexible and reliable data transmission at a rate of 1 Gbit/s and is specifically designed for demanding environments where high stability and longevity are required. The module is fully compliant with the IEEE 802.3z standard, which defines specifications for Gigabit Ethernet, and supports digital diagnostic functions that allow monitoring of optical performance and operational status. The hot-plug capability allows the module to be inserted and removed without interrupting network operation, simplifying maintenance and configuration.

Applications
This module is designed for use in industrial networks, particularly in environments with high requirements for temperature stability and mechanical durability. It is suitable for applications in automation technology, power supply, transportation, and marine systems, where certification by DNV provides additional safety assurance. The robust construction and certifications according to UL 62368-1, IEC 62368-1, and IEC 60825-1 ensure safe and reliable operation.

Features and Specifications in Detail
The SFP-1G20BLC features an LC duplex connector suitable for connection with multimode and singlemode fiber optic cables. It is specifically designed for singlemode fibers and operates at a wavelength of 1550 nm, enabling high reach and low attenuation. The optical performance is specified with a TX power of +5 to -9.5 dBm and an RX sensitivity of up to -33 dBm, ensuring a stable connection over long distances. The link budgets range from 8.5 dB to 31 dB, increasing flexibility in selecting cable types and lengths.

Technology Explained Simply
The integrated Digital Diagnostic Monitor (DDM) function enables real-time monitoring of parameters such as temperature, voltage, optical power, and fault conditions. This is particularly useful for remote maintenance and early detection of faults. The module is equipped with a TTL Signal Detect indicator that visually displays the connection status. The LVPECL differential inputs and outputs ensure robust and interference-free signal transmission, which is critical for industrial applications. The laser class 1 according to EN 60825-1 guarantees safe operation without risk to the eyes.

Compatibility and Accessories
The module is compatible with singlemode fiber optic cables according to G.652 and can be used in combination with other SFP modules from the SFP-1G series by Moxa. It is specifically designed for use in industrial switches and network devices from Moxa, but can also be used in other devices that support SFP ports. The WDM options (e.g., SFP-20A/B) enable wavelength division multiplexing, allowing multiple data streams to be transmitted over a single fiber optic cable.

Installation and Mounting
Installation is performed by simply inserting the module into an SFP port of the network device. The hot-plug capability allows insertion without powering down the device. Connection to the fiber optic cable is made via the LC duplex connector, which is standard in the industry. Mounting requires no special tools or additional components.

Operational Advantages
The low power consumption of up to 1 W reduces operating costs and heat generation in the device. The extended operating temperature range of -40 to 85 °C for T models enables use in extreme environments, such as outdoor installations or industrial halls with high temperatures. The 5-year manufacturer's warranty provides additional security for operation.