In practice, most optical transceiver modules provide 3–7 years of reliable service, depending on conditions. With proper cooling, clean connections, and gentle handling, SFP+, QSFP+, QSFP28, QSFP-DD, and OSFP modules can deliver their full expected lifetime. As a practical baseline, short-reach modules in clean, cooled data centers usually give you five to seven years of solid service; the most conservative shops plan for three to five years for edge racks, wiring closets, and any place where temperature and handling are outside ideal ranges. These are. Their lifespan depends on a mix of design, environment, and how they're used in real-world conditions. In well-cooled data centers, common modules such as SFP+ or QSFP28 often run reliably for 5–7 years. Here's a previous answer claiming 1 million hours but no documentation for that. How do I know when to start proactively replacing old SFPs? Is that even something I need to worry about? 03-22-2021. In AV over IP networks, fiber-optic modules are often the silent workhorses. But like any electronic component, they have a finite lifespan.
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