About This Part
The Finisar J4858A is a 1 Gigabit Ethernet (GbE) Small Form-Factor Pluggable (SFP) transceiver. It enables high-speed data transmission over multimode fiber optic cables, converting electrical signals to optical signals and vice-versa. These transceivers are essential components in enterprise networks, data centers, and telecom infrastructure, facilitating reliable short-to-medium distance connections between switches, routers, and other networking equipment. They are commonly deployed in server racks, wiring closets, and within campus networks where cost-effective, high-bandwidth links are required over distances up to several hundred meters. Operating at an 850nm wavelength, the J4858A is specifically designed for use with multimode fiber (MMF). It supports data rates of up to 1.25 Gbps, making it suitable for Gigabit Ethernet applications. This transceiver can achieve a maximum reach of 550 meters when used with 50/125µm OM2 or OM3 multimode fiber, and up to 275 meters with 62.5/125µm OM1 fiber. It features a duplex LC connector for easy integration into existing fiber optic cabling systems. As a Finisar product, it ensures compatibility and reliable performance within various networking environments. Revo Distribution Limited specializes in providing high-quality used and refurbished telecom and data center equipment. The Finisar J4858A SFP transceiver is a staple in many legacy and current network deployments, offering a cost-effective solution for expanding or maintaining 1GbE connectivity. By offering such essential components, Revo enables businesses to optimize their IT budgets without compromising on network performance or reliability. Our rigorous testing ensures that each J4858A unit meets stringent operational standards, providing a dependable alternative to new hardware for our B2B clients.
