25GBASE-ER SFP28 Industrial Transceiver: 25G-SFP28-40I

Our EDGEOPTIC 25G-SFP28-40I is a multi-vendor compatible industrial-grade 25GBASE-ER SFP28 dual-fiber optical module designed for long-haul 25 Gigabit Ethernet applications in harsh environmental conditions. The 25G-SFP28-40I 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 25GBASE-ER SFP28 transceiver utilizes DML (Directly Modulated Laser) technology for transmission and APD (Avalanche Photodiode) for receiving, engineered specifically for superior sensitivity and extended reach performance in extreme temperature environments.

The transceiver ensures a 19 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 40 kilometers, making it ideal for outdoor metropolitan deployments, industrial backbone networks, and critical infrastructure interconnects. 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 APD performance and FEC functionality across the entire industrial temperature range, ensuring stable long-haul connectivity in challenging deployment scenarios.

25G-SFP28-40I compatible industrial 25GBASE-ER 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 25GBASE-ER SFP28 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 critical for long-haul applications.

The module operates within an extended industrial temperature range of -45°C to +85°C, with maximum power consumption of 1.5W, specifically designed for deployment in uncontrolled environments including outdoor cabinets, remote cell sites, utility infrastructure, and transportation networks. The enhanced thermal design ensures stable DML laser operation with output power from 0 to 6 dBm and maintains the 4 dB minimum extinction ratio across the entire temperature spectrum. The APD photodiode receiver delivers exceptional sensitivity of -19 dBm even at temperature extremes, crucial for maintaining 40km reach in harsh conditions. Standards compliance includes IEEE 802.3cc specifications for 25 Gigabit Ethernet and CPRI Option 10/eCPRI for wireless fronthaul applications, supporting both 10G Ethernet (10.31 Gbps) and 25G Ethernet (25.78 Gbps) applications.

Our industrial 25G SFP28 ER transceiver is CE/RoHS certified and compliant with Class 1 FDA and IEC60825-1 laser safety standards. Typical applications include outdoor 5G xHaul deployments, smart grid communications, railway signaling systems, oil and gas pipeline monitoring, mining operations, and remote industrial facilities requiring long-reach connectivity. The CPRI Option 10/eCPRI compliance makes it particularly suitable for outdoor mobile network infrastructure in extreme climates. 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, humidity exposure tests, APD bias stability verification, in addition to optical parameter measurements, connector cleanliness tests, and SFP28 transceiver EEPROM memory data validation tests.