SFP 850nm is a type of Small Form-Factor Pluggable (SFP) transceiver used in fiber optic networks. It is designed to transmit and receive data over single-mode fiber optic cables at a wavelength of 850 nanometers (nm). It is commonly used in Gigabit Ethernet, Fibre Channel, and other high-speed applications. SFP 850nm transceivers are available in a variety of form factors, including SFP, SFP+, and XFP. They are also available in a range of data rates, from 1Gbps to 10Gbps. SFP 850nm transceivers are typically used in short-range applications, such as within a data center or between two buildings. They are also used in longer-range applications, such as between two cities. SFP 850nm transceivers are reliable, cost-effective, and easy to install.