Finisar FTLF8536P5BCL Compatible 10G/25G Dual-Rate SFP28 Transceiver
Finisar compatible FTLF8536P5BCL - Key Features
- Compatibility: Finisar
- Media Type: Multi-Mode Fiber (MMF) -OM3/OM4/OM5
- Fiber Count: Duplex
- Connector: Double LC/UPC
- Maximum Distance: 100 m
- Average Link Budget: 5.3 dB
- Tx Wavelength: 850 nm
- Supported Data Rate: 8.5 Gbps - 25.78 Gbps
- DDM/DOM: Supported
- Forward Error Correction (FEC): Host FEC Supported
- Temperature Range: Standard 0°-70°C
Finisar FTLF8536P5BCL Price
In Stock - Ships Next Business DayFinisar compatible FTLF8536P5BCL Specifications
Form Factor | SFP28 |
Media Type | Multi-Mode Fiber (MMF) -OM3/OM4/OM5 |
Fiber Count | Duplex |
Connector | Double LC/UPC |
Maximum Distance | 100 m |
Average Link Budget | 5.3 dB |
TX Wavelength | 850 nm |
RX Wavelength | 850 nm |
Supported Data Rate | 8.5 Gbps - 25.78 Gbps |
Supported Ethernet Applications | 10G Ethernet (10.31Gbps), 25G Ethernet (25.78Gbps) |
DDM/DOM | Supported |
Forward Error Correction (FEC) | Host FEC Supported |
Transmitter Type | VSCEL Laser |
Average Launch Power (Min) Each Lane | -5 dBm |
Average Launch Power (Max) Each Lane | 2.4 dBm |
Extinction Ratio (Min) | 3 dB |
Receiver Type | PIN photodiode |
Rx Wavelength Bandwidth | 20 nm |
Average Receiver Sensitivity (Min) Each Lane | -10.3 dBm |
Average Receiver Sensitivity (Max) Each Lane | 2.4 dBm |
Receiver Overload | 2.4 dBm |
Temperature Range | Standard 0°-70°C |
Storage Temperature | -40° to 85°C |
Relative Humidity | 5 to 85% |
Power Consumption (Max) | 0.3 W |
Power | +3.3V single power supply |
Compliance | SFF-8432, CE, Class 1 FDA and IEC60825-1 Laser Safety Compliant, RoHS, SFF-8431, SFF-8472, SFP28 MSA |
Finisar compatible FTLF8536P5BCL Datasheet
v3Complete technical specifications and product details
Finisar compatible FTLF8536P5BCL Description
EdgeOptic's FTLF8536P5BCL compatible is a Finisar-coded dual-rate 10GBASE-SR / 25GBASE-SR SFP28 transceiver that matches the original Finisar (now Coherent Corp) FTLF8536P5BCL specification. The 8536 prefix is the Finisar line for dual-rate parts; multiple downstream vendor product listings (Prolabs, AddOn Networks) confirm the P5BCL supports both 10.3125 Gbps and 25.78125 Gbps line rates, with the host port determining which Ethernet rate the module negotiates at. The BCL suffix is the bail-latch release, commercial-grade temperature (0-70 C).
Optics: 850 nm VCSEL transmitter, PIN photodiode receiver, TX power -8.4 to +2.4 dBm, RX sensitivity better than -10.3 dBm, 5.3 dB link budget, LC/UPC duplex connector. Reach is 100 m on OM4, 100 m on OM5, and 70 m on OM3. At 25GBASE-SR the module runs under IEEE 802.3by Clause 112 with RS-FEC via Clause 91 (RS(528,514)) enabled at the host; at 10GBASE-SR the module runs at 10.3125 Gbps with no host FEC required. No FEC negotiation or pass-through is performed at the module level - the host port sets FEC policy.
Electrical interface is SFP28 per SFF-8402 MSA with SFF-8431 and SFF-8432 for the cage. Digital diagnostics follow SFF-8472 Rev 12.2 - temperature, supply voltage, TX bias, TX power, and RX power are exposed to the host. Power dissipation on the P5 generation is 0.3 W, which is a material improvement over the 1.2 W figure on the P4PCL predecessor and simplifies thermal planning in densely populated SFP28 chassis. Operating temperature range is 0-70 C commercial, hot-swappable, RoHS compliant.
The FTLF8536P5BCL is the current-generation Finisar 25GBASE-SR dual-rate part - it supersedes the FTLF8536P4BCL (P4 generation, higher power) and sits alongside the FTLF8536P5BCV, which Lenovo qualified under ThinkSystem 4TC7A88638. Deployments cover Cisco, Dell, HPE, Arista, and Lenovo switch and server populations where Finisar was the original transceiver supplier and the slot needs to honor both 10G and 25G port modes. Finisar merged with II-VI Incorporated in 2019 and II-VI rebranded as Coherent Corp in 2022, so the FTLF8536P5BCL is sold under the Coherent Finisar product line today. EdgeOptic's compatible is coded to Finisar EEPROM identity for drop-in replacement in Finisar-populated slots.
For mixed 10G/25G switch populations where a P4BCL refresh or Coherent-branded FTLF8536P5BCL cross-reference is on the BOM, contact our sales team.
Frequently Asked Questions
Is the FTLF8536P5BCL a dual-rate 10G/25G module, or single-rate 25G only?
The P5BCL is dual-rate per Prolabs and AddOn Networks vendor product listings for the FTLF8536 series, negotiating at 10.3125 Gbps (10GBASE-SR) or 25.78125 Gbps (25GBASE-SR) based on host-port configuration. Older Finisar documentation occasionally positioned the BCL suffix as single-rate within the 8536 line; current vendor listings describe the P5BCL as '10/25GBase-SR'. In the field, the behavior is dictated by the EEPROM, which exposes both rates on the P5 generation.
Does the FTLF8536P5BCL replace the FTLF8536P4BCL in an existing deployment without changes to the host?
Yes, for 25GBASE-SR slots the P5BCL is a drop-in for the P4BCL. Optical and electrical specs are identical - 850 nm VCSEL, 100 m OM4, 70 m OM3, SFP28 per SFF-8402, bail-latch release. Power consumption is the main practical improvement: 0.3 W on P5 versus 1.2 W on the P4 generation. The lower figure relaxes thermal headroom in fully populated SFP28 chassis. EEPROM-level behavior is also retained - the P5BCL presents Finisar identity recognized by the host.
Is the FTLF8536P5BCL still in production under Coherent, or has it been discontinued?
In production. Finisar merged with II-VI Incorporated in 2019 and II-VI rebranded as Coherent Corp in 2022 - the Finisar product line, including the FTLF8536P5BCL, continues under Coherent. The part is distributed under the Coherent Finisar label in current channels. Buyers replacing original Finisar-branded stock with Coherent-branded stock can expect identical EEPROM identity and optical behavior. EdgeOptic's compatible handles either branding at the EEPROM level for drop-in replacement.
What is the FEC requirement at 25GBASE-SR on the FTLF8536P5BCL, and does the module need configuring for it?
FEC is a host-side decision. At 25GBASE-SR most modern switch platforms enable RS-FEC (IEEE 802.3by Clause 91, RS(528,514)) by default; some older platforms leave FEC at BASE-R or off. The FTLF8536P5BCL does not gate the link on FEC negotiation - whatever the host port sets, the module transmits and receives. At 10GBASE-SR no host FEC is required. Link errors at 25G on legacy OM3 or over long OM4 runs are the usual signal that RS-FEC needs to be enabled.