Finisar FTLF8536P4PNL Compatible Extended-Temp SFP28 Transceiver
Finisar compatible FTLF8536P4PNL - 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 FTLF8536P4PNL Price
In Stock - Ships Next Business DayFinisar compatible FTLF8536P4PNL 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 FTLF8536P4PNL Datasheet
v3Complete technical specifications and product details
Finisar compatible FTLF8536P4PNL Description
EdgeOptic's FTLF8536P4PNL compatible is a Finisar-coded dual-rate 10GBASE-SR / 25GBASE-SR SFP28 transceiver that matches the original Finisar (now Coherent Corp) FTLF8536P4PNL specification. The PNL suffix is the combination that defines this variant: P = pull-tab release, N = extended case-temperature range 0-85 C, L = standard commercial OEM coding. The FTLF8536 line is dual-rate, so the EEPROM carries both 10G and 25G rate support and the host port selects the Ethernet rate at 10.3125 Gbps or 25.78125 Gbps.
Optical path follows the FTLF8536 family spec: 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. RS-FEC via Clause 91 (RS(528,514)) applies at 25GBASE-SR when the host port negotiates it; at 10GBASE-SR no host FEC is required. Electrical interface is SFP28 per SFF-8402 MSA with SFF-8431 / SFF-8432 for the cage.
The N in PNL is the differentiator from standard commercial BCL or PCL variants. The extended 0-85 C case-temperature rating covers top-of-rack deployments in higher-ambient data halls, industrial-adjacent network cabinets, and dense chassis where airflow across the SFP28 cage column runs hot. The P4 generation draws 1.2 W maximum, which is the spec envelope engineers should budget against for switch power and thermal planning. The P (pull-tab) latch is the same mechanical interface used in high-density front-panel builds where bail-latch release is obstructed by adjacent modules.
Digital diagnostics are SFF-8472 Rev 12.2 compliant, exposing per-module temperature, supply voltage, TX bias, TX power, and RX power. The module is hot-swappable and RoHS compliant per the original Finisar specification. Finisar merged with II-VI Incorporated in 2019 and II-VI rebranded as Coherent Corp in 2022, so recent distribution channels also list this part under the Coherent Finisar name. The FTLF8536P4PNL is positioned for Finisar-populated slots where the L coding (standard commercial OEM identifier) is what the host expects, the pull-tab release is required by the chassis layout, and the deployment environment crosses the 70 C case-temperature boundary. EdgeOptic's compatible is coded to match the Finisar EEPROM identity for drop-in replacement.
For extended-temperature Finisar populations where 0-85 C operation and pull-tab release are both required, contact our sales team.
Frequently Asked Questions
What does the N suffix on the FTLF8536P4PNL mean for case temperature rating?
The N position in the FTLF8536P4 nomenclature encodes an extended 0-85 C case-temperature range. Dell's OEM SFP28-10G-25G-SR-85C was populated with the FTLF8536P4BNV, which is the bail-latch sibling of the PNL and shares the same N position; that cross-reference is the anchor for the 0-85 C reading. Standard commercial variants (BCL, PCL) are rated 0-70 C. The N rating matters where the SFP28 cage case temperature exceeds 70 C under sustained load, typically in dense chassis or industrial-adjacent deployments.
Does the FTLF8536P4PNL support 10G, or is it 25G-only like the FTLF8538 series?
Dual-rate 10G and 25G. The FTLF8536 prefix is the Finisar line designation for parts with both 10GBASE-SR (10.3125 Gbps) and 25GBASE-SR (25.78125 Gbps) support in EEPROM; the host port configuration selects the Ethernet rate. The FTLF8538 prefix is the single-rate 25G line and does not negotiate down to 10G. For mixed-rate access where 10G fallback is a requirement, the FTLF8536 family including the PNL is the correct selection.
Is the pull-tab FTLF8536P4PNL a drop-in for a bail-latch slot that previously held an FTLF8536P4BNL?
Optically and electrically yes. The P (pull-tab) and B (bail-latch) positions are the release mechanism only - the optics, EEPROM coding class (standard commercial L), and extended 0-85 C rating are identical within the same P4 generation. Both fit standard SFP28 cages. The practical consideration is physical access: pull-tab modules extract by pulling a tab from the front, which is preferred where adjacent cabling obstructs a bail-latch hand grip. Electrically and optically the swap is transparent to the host.
What is the power consumption of the FTLF8536P4PNL, and how does it affect chassis thermal planning?
The P4 generation is rated 1.2 W maximum per port. In a fully populated SFP28 line card with 48 ports of FTLF8536P4PNL, the module contribution to the thermal budget is up to 57.6 W. The P5 generation of the FTLF8536 family draws approximately 0.3 W, so designs that are power- or cooling-constrained generally target the P5 variants in new builds. The PNL is the correct choice where the existing slot population is P4-generation and the replacement must match the original thermal envelope.