LevelOne SFP-2505 SFP Transceiver 2.5 Gbps 1550 nm Duplex LC Single-Mode up to 40 km DDM Commercial Temperature
LevelOne SFP-2505 — 2.5G Single-Mode SFP, 1550 nm, 40 km
The LevelOne SFP-2505 is a 2.5 Gbps SFP transceiver for single-mode fibre, reaching up to 40 km at 1550 nm over a duplex LC connection, with digital diagnostics. LevelOne notes that the 1550 nm wavelength can share fibre infrastructure with CWDM/DWDM systems, which suits metro links, telco aggregation and long campus runs. It is rated for normal indoor temperatures, 0 to 70 °C. In practice, single-mode optics are the choice when a link leaves the building or runs several hundred metres: the OS2 fibre used by carriers and campus backbones carries the signal for kilometres with little loss. Before you order, confirm the fibre is single-mode at both ends and note the length and the number of patch panels on the way.