Finisar FTLF8524P2BNL Compatible 10GBASE-SR SFP+ Transceiver

EdgeOptic's FTLF8524P2BNL compatible is the 10GBASE-SR SFP+ upgrade alternative for the legacy Finisar FTLF8524P2BNL 4GFC Shortwave SFP module. The original FTLF8524P2BNL is a regular SFP (not SFP+) multi-rate Fibre Channel Shortwave optic supporting 1, 2, and 4 Gbps Fibre Channel rates, with a maximum signaling rate of 4.25 Gbps governed by the INCITS 404-2006 FC-PI-2 standard for 4GFC. The original module reaches 150 m on OM3 multimode fiber at 4GFC consistent with published specifications across vendor listings for this part number and was widely deployed across 2/4GFC SAN fabric switches from Brocade, Cisco MDS, HP StorageWorks, and other vendors before the SFP+ transition to 8GFC and 16GFC fabrics.

The EdgeOptic 10GBASE-SR replacement is an SFP+ form factor module built to IEEE 802.3ae Clause 52, with a 6.1 dB optical budget, 850 nm VCSEL transmitter, LC duplex interface, transmit power between −5 and 0 dBm, and receive sensitivity better than −11.1 dBm. The reach envelope is 300 m on OM3 and 400 m on OM4 multimode fiber. The SR module is the forward-compatible replacement for fabric switches that have migrated their host ports to SFP+ cages. Hosts still running SFP-only cages (legacy 4GFC SAN switches that were never refreshed to SFP+) cannot accept the SFP+ optic directly. Verify cage compatibility against the fabric switch documentation before substituting.

Finisar-recognized EEPROM coding identifies the module under the ordering code that the host expects, so the SFP+ registers cleanly on platforms that previously accepted the FTLF8524P2BNL ordering code. Digital diagnostics per SFF-8472 reports temperature, supply voltage, transmit bias current, transmit power, and receive power on every read. The EdgeOptic SR replacement runs to the Ethernet 10GBASE-SR specification. The original FTLF8524P2BNL is a Fibre Channel optic governed by FC-PI-2 with its own 4.25 Gbps signaling rate and FC-specific reach budget; the SR replacement is an Ethernet optic and is not a like-for-like protocol substitute on a Fibre Channel fabric. Finisar Corporation was acquired by II-VI Incorporated in 2019, with the combined entity renamed Coherent Corp in December 2022; the legacy Finisar FTLF8524P2BNL ordering code remains in use across long-running SAN deployments.

For legacy SAN fabric upgrade questions, cage compatibility review, or bulk FTLF8524P2BNL replacement orders, contact our sales team.

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