25G SFP28 20km SMF Industrial Transceiver: 25G-SFP28-20I

Our EDGEOPTIC 25G-SFP28-20I is a multi-vendor compatible industrial-grade 25G SFP28 dual-fiber optical module designed for extended-reach 25 Gigabit Ethernet applications in harsh environmental conditions. The 25G-SFP28-20I module operates at 1310nm wavelength for both transmission and reception, with data rates from 8.5 to 28.1 Gbps supporting multiple protocol standards and applications. Our industrial 25G SFP28 20km transceiver utilizes DML (Directly Modulated Laser) technology for transmission and PIN photodiode for receiving, engineered specifically for reliable extended-reach connectivity in extreme temperature environments.

The transceiver ensures an 8 dB guaranteed optical link budget with host-based Forward Error Correction (FEC) support, which determines the maximum transmission distance capabilities. Over standard single-mode fiber (SMF), the module achieves reliable transmission up to 20 kilometers, making it ideal for outdoor metropolitan deployments, industrial campus interconnects, and critical infrastructure networks. However, distance is just an indicative parameter calculated for convenience of identification – eventually we calculate distance taking into account minimal optical budget and average attenuation of optical cabling in industry standards. The robust design maintains consistent optical performance and FEC functionality across the entire industrial temperature range, ensuring stable connectivity in challenging deployment scenarios.

25G-SFP28-20I compatible industrial extended-reach module is hot-pluggable SFP28 with duplex LC/UPC connectors as an optical interface. The electrical interface conforms to SFF-8431 and SFF-8432 MSA (Multi-Source Agreement) specifications, ensuring compatibility with standard SFP28 host systems supporting multiple vendor equipment platforms. Our industrial 25G SFP28 20km transceiver can be encoded to be compatible and successfully operate in different 80+ brands of equipment. The module incorporates comprehensive DDM/DOM (Digital Diagnostic Monitoring) functionality providing real-time information including transmitted and received optical power levels, module temperature, bias current, and supply voltage. This diagnostic data is available via MSA-compatible EEPROM interface per SFF-8472 specifications, enabling continuous monitoring of transceiver operational parameters across extreme temperature variations.

The module operates within an extended industrial temperature range of -45°C to +85°C, with maximum power consumption of 1.2W, specifically designed for deployment in uncontrolled environments including outdoor cabinets, remote cell sites, transportation infrastructure, and utility networks. The enhanced thermal design ensures stable DML laser operation and maintains the 3.5 dB minimum extinction ratio across the entire temperature spectrum while preserving the 20km reach capability. Standards compliance includes IEEE 802.3cc specifications for 25 Gigabit Ethernet, supporting both 10G Ethernet (10.31 Gbps) and 25G Ethernet (25.78 Gbps) applications. The 40nm receiver wavelength bandwidth provides tolerance for wavelength drift in extreme temperatures while maintaining receiver sensitivity between -13 dBm and 2 dBm.

Our industrial 25G SFP28 20km transceiver is CE/RoHS certified and compliant with Class 1 FDA and IEC60825-1 laser safety standards. Typical applications include smart city infrastructure, industrial automation networks, outdoor wireless backhaul systems, railway communications, oil and gas facilities, and mining operations requiring extended reach. The multi-rate capability accommodates legacy 10 Gigabit Ethernet operation alongside native 25 Gigabit rates, providing operational flexibility for mixed-speed network deployments in harsh environments. Because our focus is providing top quality service, we perform extensive environmental testing including thermal cycling, vibration resistance, and humidity exposure tests, in addition to optical parameter measurements, connector cleanliness tests, and SFP28 transceiver EEPROM memory data validation tests, ensuring reliable 20km transmission under extreme conditions.