Stratos Lightwave SPLC-20-4-1-B-R6 SFP Transceiver

The Stratos Lightwave SPLC-20-4-1-B-R6 is a hot-pluggable SFP (Small Form-factor Pluggable) optical transceiver module designed for high-speed Gigabit Ethernet and Fibre Channel applications. It supports dual data rates of 1.25 Gbit/s (Gigabit Ethernet) and 1.0625 Gbit/s (1G Fibre Channel), providing a bidirectional optical interface in a compact MSA-compliant package.This module operates at a nominal wavelength of 850 nm using a VCSEL (Vertical Cavity Surface Emitting Laser) transmitter and a PIN photodiode receiver. It is optimized for multimode fiber (MMF, 50/125 µm OM2/OM3) with a typical transmission distance of up to 300–550 m depending on fiber type and bandwidth (300 m on OM2, up to 550 m on OM3). The optical link budget supports reliable performance with low bit error rates (better than 10⁻¹²) over the specified reach. Transmitter average output power and receiver sensitivity comply with 1000BASE-SX requirements.
The SPLC-20-4-1-B-R6 complies with the SFP MSA (INF-8074i), IEEE 802.3z 1000BASE-SX, and Fibre Channel standards. It features digital diagnostic monitoring capabilities (in most revisions) for real-time reporting of optical parameters. The module includes Loss of Signal (LOS) detection, automatic laser shutdown (ALS) for Class 1 eye safety compliance, and hot-swap support.
Optical connectivity is realized through a duplex LC connector. The transceiver uses the standard 20-pin SFP electrical interface with a single +3.3 V power supply and low power consumption (typically below 1 W), making it suitable for high-density port configurations in switches, routers, and storage area network equipment.
Environmental specifications include a commercial operating temperature range of 0°C to +70°C, high humidity tolerance, and built-in ESD protection. The die-cast metal housing provides excellent EMI shielding. This SFP transceiver is primarily used for short-reach 1.25 Gbit/s links within data centers, enterprise campus networks, or Fibre Channel SAN fabrics where multimode fiber infrastructure is deployed.
The module integrates with network management systems for monitoring where DDM is supported. Installation requires standard fiber optic cleaning procedures, correct Tx/Rx fiber polarity, and adherence to minimum bend radius guidelines for duplex LC patch cords. The Stratos Lightwave SPLC-20-4-1-B-R6 offers a reliable, cost-effective solution for Gigabit Ethernet and 1G Fibre Channel optical transport over multimode fiber.