1000BASE-SX SFP Compatible Transceiver: 1.25G-SFP-550D

Our EDGEOPTIC 1.25G-SFP-550D is a multi-vendor compatible 1000BASE-SX SFP dual-fiber optical module engineered for Gigabit Ethernet applications operating over multimode fiber infrastructure. The 1.25G-SFP-550D module operates at 850nm wavelength for both transmission and reception, supporting data rates from 1.063 to 1.25 Gbps and accommodating multiple protocol standards including Gigabit Ethernet and 1G Fiber Channel. Our 1000BASE-SX SFP transceiver utilizes VCSEL (Vertical-Cavity Surface-Emitting Laser) technology for transmission paired with PIN photodiode for receiving, delivering reliable short-reach connectivity for enterprise and data center environments.

The transceiver ensures a 7.5 dB guaranteed optical link budget, enabling transmission distances up to 550 meters over OM2/OM3 multimode fiber. While maximum reach depends on fiber quality and installation conditions, the module typically achieves 275 meters over 62.5/125μm fiber and full 550-meter capability on 50/125μm OM2 or better cabling. Distance specifications serve as identification parameters calculated using minimum optical budget and industry-standard fiber attenuation values, with actual performance varying based on specific deployment conditions.

1.25G-SFP-550D compatible 1000BASE-SX module features hot-pluggable SFP form factor with duplex LC/UPC connectors as the optical interface. The electrical interface conforms to INF-8074i MSA (Multi-Source Agreement) specifications, ensuring compatibility with standard SFP host systems across multiple vendor platforms. Our 1000BASE-SX SFP transceiver can be encoded for compatibility with over 80 different equipment brands. The module incorporates comprehensive DDM/DOM (Digital Diagnostic Monitoring) functionality, providing real-time operational data including transmitted and received optical power levels, module temperature, laser bias current, and supply voltage. This diagnostic information accessible through the MSA-compatible EEPROM interface enables proactive network monitoring and maintenance.

Operating within a standard 0 to 70°C temperature range, the module maintains stable performance in controlled data center and enterprise environments. The transceiver draws power from a single +3.3V supply, with typical consumption well within SFP MSA specifications for Class 1 power dissipation. Standards compliance encompasses IEEE 802.3z for Gigabit Ethernet, alongside support for legacy Fast Ethernet operation and 1G Fiber Channel protocols. Multi-vendor interoperability is achieved through strict adherence to industry MSA standards, though systems employing vendor-specific module authentication may require custom EEPROM programming for seamless integration.

Our 1000BASE-SX SFP transceiver holds CE/RoHS certification and complies with Class 1 FDA and IEC60825-1 laser safety standards. Common deployment scenarios include enterprise campus networks, data center rack-to-rack connections, storage area networks, and metropolitan area network access rings. The module's multi-rate capability supports migration paths from legacy 100Mbps Fast Ethernet to full Gigabit speeds, providing investment protection for evolving network infrastructures.

Quality assurance procedures encompass comprehensive optical parameter verification, connector cleanliness inspection, and SFP transceiver EEPROM memory validation tests, ensuring each module meets stringent performance specifications before shipment.