Finisar FTLF8536P5BCL Compatible 25GBASE-SR SFP28 Transceiver

EdgeOptic's FTLF8536P5BCL compatible is a Finisar-coded variant of the EdgeOptic 25G-SFP28-100 multi-vendor SFP28 SR transceiver. FTLF8536P5BCL is a Finisar (now Coherent Corp) ordering code in the FTLF8536P5 25GBASE-SR SFP28 family, published as a single-rate 25 Gbps module in the Coherent product catalog. EdgeOptic's compatible is built to the dual-rate 10G/25G envelope of the underlying 25G-SFP28-100 hardware, so 10G operation depends on the host port's dual-rate SFP28 capability. The module is programmed with Finisar-recognized EEPROM vendor and part-number strings so hosts accepting Finisar-coded EEPROM read the optic cleanly through the standard SFP28 management interface.

Optical behavior is 25GBASE-SR per IEEE 802.3by Clause 112 over duplex multi-mode fiber. Line signaling rate is 25.78125 Gbps at 25GBASE-SR; 10GBASE-SR signaling at 10.3125 Gbps per IEEE 802.3ae is supported on dual-rate SFP28 host ports. Reach is 100 m on OM4 and 70 m on OM3, within the SFP28 SerDes envelope defined by SFP28 MSA SFF-8402.

Optical path is 850 nm VCSEL transmitter, PIN photodiode receiver, TX optical power −5 to +2.4 dBm, RX sensitivity better than −10.3 dBm, 5.3 dB link budget, LC duplex connector. Digital diagnostics are SFF-8472 Rev 12.0 compliant, exposing per-module temperature, supply voltage, TX bias, TX power and RX power through the host's standard transceiver-diagnostics interface. Power dissipation is 0.3 W, the module is hot-swappable with a bail-latch release mechanism, and the operating temperature range is 0 to 70°C commercial.

FTLF8536P5BCL is positioned against any SFP28 host platform accepting Finisar-coded EEPROM, which covers chassis previously populated with Finisar FTLF8536P5 family modules. The FTLF8536P5BCL is the bail-latch single-rate variant in the P5 family; FTLF8536P5PCL is the pull-tab release variant with the same single-rate 25 Gbps OEM spec, and FTLF8536P5BCV is the dual-rate 10G/25G OEM variant, with Lenovo qualifying the BCV as a dual-rate 10G/25G SFP28 module under Lenovo ThinkSystem ordering code 4TC7A88638. The FTLF8536P4BCL is the prior-generation predecessor in the FTLF8536P4 family. Verify FTLF8536P5BCL against your platform's transceiver compatibility documentation and the Finisar/Coherent datasheet before specifying the part.

On FEC, 25G FEC mode is configured at the MAC layer on each link partner and the optical path is agnostic to whether RS-FEC per IEEE 802.3by Clause 108 or BASE-R FEC is negotiated on the host. The host FEC profile determines the negotiated mode on the link; confirm the FEC profile on both link partners during commissioning to avoid mismatch on mixed-vendor 25G interconnects. The module is symmetrically compatible with either FEC mode supported on the host port.

Backed by 15+ years of EdgeOptic compatibility engineering across vendor optical platforms. Ships next business day from EU stock with a lifetime warranty. For FTLF8536P5BCL populations where the existing chassis EEPROM coding must match, multi-rack volume pricing on a 25G refresh, or compatibility verification against a specific host platform, contact our sales team.