FTLX8574D3BTL II-VI/Finisar Compatible 10GBASE-SR SFP+ Module

FTLX8574D3BTL is an II-VI/Finisar 10GBASE-SR SFP+ transceiver rated for 300 m over OM3 multimode fiber and 400 m over OM4. The "-BTL" suffix in Finisar's naming convention identifies a specific variant within the FTLX8574D3B product family. Like other suffixes (BCL, BCV, BNL), BTL designates a particular EEPROM configuration; the optical performance is identical across all suffixes; the optical core is a standard 850 nm VCSEL transmitter paired with a PIN photodiode receiver, 6.1 dB guaranteed link budget, and LC duplex interface. EdgeOptic's compatible matches these parameters and ships with II-VI/Finisar-recognized EEPROM data. Distance figures are calculated from the minimum guaranteed optical budget and typical multimode attenuation at 850 nm, so actual reach varies with the installed fiber plant, connector losses, patch-panel count, and bend radius compliance of the cabling.

The module supports data rates from 1.25 to 10.3125 Gbps, covering 10GbE (IEEE 802.3ae) and 1GbE operation depending on the host port configuration. DDM/DOM diagnostics expose Tx power, Rx power, temperature, bias current, and supply voltage through standard SFF-8472 I2C registers, readable from any switch or NIC management interface that supports digital diagnostics. Operating range is 0 to 70 °C (commercial grade). For extended-temperature deployments (−40 to +85 °C) in outdoor enclosures or industrial settings, the FTLX8574D3BNL is the industrial-rated variant within the same product family. The FTLX8574D3BCV adds a different EEPROM profile targeting specific server NIC platforms (primarily Intel-based), while the FTLX8574D3BCL is Finisar's general-purpose 10G SR carrying the widest cross-vendor compatibility across switching and routing platforms.

The broader FTLX8574D3B product line includes suffixes BCL, BCV, BNL, BTL, and additional OEM-specific variants. All share the same SFF-8431/8432 mechanical and electrical interface and the same 10GBASE-SR optical parameters, differing only in EEPROM configuration, temperature rating, or OEM branding. This module complies with SFF-8432 MSA and is CE/RoHS certified. When replacing an existing FTLX8574D3BTL in a production link, confirm that the host switch or NIC validates the specific suffix in its qualified optics list, as some platforms perform strict EEPROM vendor-string matching on port initialization. For cross-reference help between Finisar suffix variants or bulk compatible pricing, contact our sales team.