Finisar FTLF8536P4BCL 25GE Short Wave SFP+ Optical Transceiver
The Finisar FTLF8536P4BCL is a 25GBASE-SR SFP28 short-wave optical transceiver for data center and enterprise links up to 100 m over OM4 multimode fiber. It suits server, storage, and top-of-rack switch deployments transitioning from 10G to 25G Ethernet, particularly where existing duplex LC multimode cabling is already in place. Note that reach figures are fiber-grade dependent, so verify your OM3/OM4 plant before ordering.
Key specifications (table)
| Parameter | Specification |
| Part Number | FTLF8536P4BCL |
| Manufacturer | Finisar (now Coherent) |
| Form Factor | SFP28 (backward-compatible with SFP+ cages, platform dependent) |
| Data Rate | Up to 25.78 Gbps |
| Ethernet Standard | 25GBASE-SR |
| Wavelength | 850 nm (short-wave VCSEL window) |
| Fiber Type | Multimode Fiber (MMF) |
| Connector Type | Duplex LC |
| Transmitter Type | Oxide VCSEL Laser |
| Receiver Type | PIN Photodiode |
| Maximum Distance (OM4) | 100 m |
| Maximum Distance (OM3) | 70 m |
| Maximum Distance (OM2) | 20 m |
| Power Supply | 3.3 V |
| Maximum Power Consumption | 1.2 W |
| Digital Diagnostics | DDM/DOM Supported (via I2C per SFF-8472) |
| Hot-Pluggable | Yes |
| Operating Temperature | 0°C to +70°C (commercial range; typical data center ambient) |
| EMI Protection | Metal Enclosure, Low EMI |
| Standards Compliance | IEEE 802.3by, SFF-8402, SFF-8472 (MSA-aligned, multi-vendor interoperability) |
| Environmental Compliance | RoHS Compliant |
Good to know
- Designed for 25G switch and NIC ports in 25GBASE-SR mode; pair with OM4 duplex LC patch cords for the full 100 m reach — the 20 m OM2 figure makes older multimode plant a limiting factor.
- Within the Finisar (Coherent) family, this is the 25G short-reach multimode variant, positioned below long-reach single-mode SFP28 parts for cost-sensitive intra-rack and adjacent-rack links.
- Confirm your switch vendor’s coded-module policy before purchase; MSA compliance (IEEE 802.3by, SFF-8402/8472) generally enables third-party interop, but some platforms enforce brand whitelists — DDM/DOM monitoring can help validate link health after installation.
For tray and reel pricing, current stock by part number and date code, and volume discounts on bulk orders, request a bulk quotation.
The Finisar FTLF8536P4BCL is a 25GBASE-SR SFP28 short-wave optical transceiver for data center and enterprise links up to 100 m over OM4 multimode fiber. It suits server, storage, and top-of-rack switch deployments transitioning from 10G to 25G Ethernet, particularly where existing duplex LC multimode cabling is already in place. Note that reach figures are fiber-grade dependent, so verify your OM3/OM4 plant before ordering.
Key specifications (table)
| Parameter | Specification |
| Part Number | FTLF8536P4BCL |
| Manufacturer | Finisar (now Coherent) |
| Form Factor | SFP28 (backward-compatible with SFP+ cages, platform dependent) |
| Data Rate | Up to 25.78 Gbps |
| Ethernet Standard | 25GBASE-SR |
| Wavelength | 850 nm (short-wave VCSEL window) |
| Fiber Type | Multimode Fiber (MMF) |
| Connector Type | Duplex LC |
| Transmitter Type | Oxide VCSEL Laser |
| Receiver Type | PIN Photodiode |
| Maximum Distance (OM4) | 100 m |
| Maximum Distance (OM3) | 70 m |
| Maximum Distance (OM2) | 20 m |
| Power Supply | 3.3 V |
| Maximum Power Consumption | 1.2 W |
| Digital Diagnostics | DDM/DOM Supported (via I2C per SFF-8472) |
| Hot-Pluggable | Yes |
| Operating Temperature | 0°C to +70°C (commercial range; typical data center ambient) |
| EMI Protection | Metal Enclosure, Low EMI |
| Standards Compliance | IEEE 802.3by, SFF-8402, SFF-8472 (MSA-aligned, multi-vendor interoperability) |
| Environmental Compliance | RoHS Compliant |
Good to know
- Designed for 25G switch and NIC ports in 25GBASE-SR mode; pair with OM4 duplex LC patch cords for the full 100 m reach — the 20 m OM2 figure makes older multimode plant a limiting factor.
- Within the Finisar (Coherent) family, this is the 25G short-reach multimode variant, positioned below long-reach single-mode SFP28 parts for cost-sensitive intra-rack and adjacent-rack links.
- Confirm your switch vendor’s coded-module policy before purchase; MSA compliance (IEEE 802.3by, SFF-8402/8472) generally enables third-party interop, but some platforms enforce brand whitelists — DDM/DOM monitoring can help validate link health after installation.
For tray and reel pricing, current stock by part number and date code, and volume discounts on bulk orders, request a bulk quotation.
