QLogic FTLF8536P4BCL-QL Compatible Dual-Rate 10G/25G SFP28 for FastLinQ 41000 Adapters
Qlogic compatible FTLF8536P4BCL-QL - Key Features
- Compatibility: Qlogic
- Media Type: Multi-Mode Fiber (MMF) -OM3/OM4/OM5
- Fiber Count: Duplex
- Connector: Double LC/UPC
- Maximum Distance: 100 m
- Guaranteed 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
Qlogic FTLF8536P4BCL-QL Price
In Stock - Ships Next Business DayQlogic compatible FTLF8536P4BCL-QL Specifications
Form Factor | SFP28 |
Media Type | Multi-Mode Fiber (MMF) -OM3/OM4/OM5 |
Fiber Count | Duplex |
Connector | Double LC/UPC |
Maximum Distance | 100 m |
Guaranteed 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 |
Qlogic compatible FTLF8536P4BCL-QL Datasheet
v3Complete technical specifications and product details
Qlogic compatible FTLF8536P4BCL-QL Description
EdgeOptic's FTLF8536P4BCL-QL compatible is a QLogic-coded dual-rate SFP28 transceiver built as a direct replacement for the QLogic FTLF8536P4BCL-QL. The -QL suffix designates the QLogic/Marvell-coded variant of the Finisar FTLF8536 P4-generation dual-rate optic; the base FTLF8536P4BCL is the Finisar standalone OEM ordering code and carries different EEPROM vendor and part-number strings. The QLogic-coded variant ships with the vendor and part-number strings that the Marvell FastLinQ 41000-series optic-identification path expects, so FastLinQ adapters identify the module as a native QLogic part at insertion.
Optical behavior is 25GBASE-SR per IEEE 802.3by Clause 112 over duplex multi-mode fiber: 100m on OM4, 70m on OM3 at the 25G line rate. Line signaling rate is 25.78125 Gbd with dual-rate downshift support to 10GBASE-SR (10.3125 Gbd) on rate-capable link partners, per IEEE 802.3by Clause 112 and the Finisar FTLF8536 P4-generation specification. At the 10G line rate the module operates to the IEEE 802.3ae-compatible 10GBASE-SR reach on OM3 and OM4. Transmit power is -8.4 to +2.4 dBm, receive sensitivity -10.3 dBm, link budget 5.3 dB with host RS-FEC per IEEE 802.3by Clause 108 at 25G. Wavelength 850nm VCSEL, duplex LC/UPC, DOM per SFF-8472. Power consumption is 1.2W typical (P4-generation). Operating case temperature is 0 to 70 degrees Celsius.
FTLF8536P4BCL-QL is the QLogic/Marvell-coded variant of the Finisar FTLF8536 P4-generation dual-rate 10G/25G SFP28. The module is specified against Marvell/QLogic FastLinQ 41000-series 10/25GbE Ethernet adapters and the QLogic-branded 25GbE PCIe adapter family. The dual-rate capability allows the same optical module to operate at either the 10G line rate (10GBASE-SR, 10.3125 Gbd) or the 25G line rate (25GBASE-SR, 25.78125 Gbd) depending on the configured port speed on the host adapter, rather than requiring separate modules for each rate. In mixed-rate deployments where a server NIC is cabled to either a 10G or 25G switch port, the same FTLF8536P4BCL-QL populates both ends on the server side without replacement.
The module is built to the SFP28 MSA (SFF-8402 mechanical, SFF-8431 high-speed electrical, SFF-8432 management interface, SFF-8472 diagnostics). QLogic / Marvell host drivers read the optical identifier on insertion and match the vendor and part-number strings against the supported-optic list carried by the driver image; the EdgeOptic -QL compatible is EEPROM-coded to the QLogic vendor and part-number strings that the FastLinQ optic-identification path expects. For the base Finisar FTLF8536P4BCL (without the -QL suffix), see the sibling ordering code at the Finisar product page; selecting between the two depends on which optic-identification vendor the host adapter driver expects.
On FEC, 25G FEC mode is configured at the MAC layer on each link partner and the optical path is agnostic to the host FEC profile. At the 25G line rate, RS-FEC per IEEE 802.3by Clause 108 is the default path; Clause 74 Fire Code FEC (BASE-R) and no-FEC operation are supported at the optical layer where both link partners are configured for that FEC profile. At the 10G line rate, 10GBASE-SR operates without RS-FEC per IEEE 802.3ae. DOM registers for transmit power, receive power, supply voltage, laser bias current and module case temperature are accessible through standard SFF-8472 reads on the host adapter driver and on any EEPROM-aware link partner. Every unit is factory-tested to the 25GBASE-SR optical specification per IEEE 802.3by Clause 112 before dispatch, with dual-rate 10G / 25G operation verified on the test fixture.
For volume pricing, QLogic-specific EEPROM vendor and part-number strings for pre-deployment verification on a specific FastLinQ adapter and driver image, or confirmation of the ordering-code selection between FTLF8536P4BCL-QL (QLogic-coded) and FTLF8536P4BCL (Finisar standalone) for a given host platform, contact our sales team and we will respond within one business day.
Frequently Asked Questions
What is the difference between FTLF8536P4BCL and FTLF8536P4BCL-QL?
FTLF8536P4BCL is the Finisar standalone OEM ordering code for the P4-generation dual-rate 10G/25G SFP28. FTLF8536P4BCL-QL is the QLogic/Marvell-coded variant of the same optical module; the -QL suffix designates QLogic EEPROM vendor and part-number strings for use in Marvell FastLinQ 41000-series Ethernet adapters and other QLogic-branded 25GbE host platforms. The two ordering codes share the optical specification (dual-rate 10GBASE-SR at 10.3125 Gbd and 25GBASE-SR at 25.78125 Gbd, 850nm VCSEL, 100m OM4 / 70m OM3 at 25G) but carry different EEPROM strings. Host adapter drivers that validate the optic vendor and part-number on insertion will accept only the variant whose EEPROM matches the driver's supported-optic list.
Does the FTLF8536P4BCL-QL support both 10G and 25G line rates on the same SFP28 port?
Yes. The FTLF8536P4BCL-QL is a P4-generation dual-rate module: it operates at either 10GBASE-SR (10.3125 Gbd line rate) or 25GBASE-SR (25.78125 Gbd line rate) depending on the configured port speed on the host adapter. The same physical module populates both rates without replacement, which is the primary differentiator against single-rate 25G-only SFP28 modules such as the FTLF8538-series P5-generation parts. At 25G the module is specified with RS-FEC per IEEE 802.3by Clause 108; at 10G the 10GBASE-SR link operates without RS-FEC per IEEE 802.3ae. In mixed-rate deployments where a server NIC connects to either a 10G or 25G switch port, a single FTLF8536P4BCL-QL on the server side covers both scenarios.
Which QLogic or Marvell FastLinQ adapters accept the FTLF8536P4BCL-QL?
The -QL suffix designates QLogic/Marvell FastLinQ-coded EEPROM strings. The host scope is the Marvell FastLinQ 41000-series 10/25GbE Ethernet adapters and QLogic-branded 25GbE PCIe adapters that expose SFP28 ports. For confirmation against a specific FastLinQ adapter model and the driver version running on the host, contact us for pre-deployment EEPROM verification; the exact supported-optic list is carried inside the driver image rather than on a public product page, so model-level verification against the target driver is the reliable way to confirm acceptance.
Why does the FTLF8536P4BCL-QL consume 1.2W when the root 25G-SFP28-100 specification lists 0.3W?
The FTLF8536P4BCL-QL is a P4-generation Finisar dual-rate module. The P4 generation is specified at approximately 1.2W typical, compared to the 0.3W typical figure on single-rate P5-generation parts such as the FTLF8538-series. The 0.3W figure on the root 25G-SFP28-100 product page applies to current single-rate P5-generation modules; for the P4-generation dual-rate optic specifically, budget for 1.2W per port in host power and thermal planning. SFP28 cages are specified to 1.5W class, so the P4 module operates well inside the cage thermal envelope.