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Finisar FTLF8540P4BCV 25G eSR/SR dual-rate SFP28 850nm 300m
25 Gb/s 25G eSR/SR dual-rate SFP28 transceiver, 850nm, up to 300m (OM4), commercial temperature.
- Manufacturer
- Coherent Corp. (formerly Finisar / II-VI)
- Mfr part number
- FTLF8540P4BCV
- Family
- FTLF8540
- Category
- Fiber optic transceiver modules
- Datasheet
- FTLF8540P4BCV datasheet (PDF)
FTLF8540P4BCV specifications
| Attribute | Value |
|---|---|
| Manufacturer | Coherent Corp. (Finisar) |
| Manufacturer part number | FTLF8540P4BCV |
| Product family | FTLF8540 |
| Form factor | SFP28 |
| Standards / application | SFF-8472 Rev 12.1b; SFF-8402g; SFF-8432a; SFF-8431 Rev 4.1c |
| Data rate | 25.78 Gb/s |
| Wavelength | 840–860 nm |
| Laser | 850 nm oxide VCSEL |
| Receiver | PIN |
| Reach | 300 m OM4; 200 m OM3 |
| Connector | Duplex LC |
| Tx output power | −8.4 to +2.4 dBm avg; OMA −4.3 to +3 dBm |
| Rx sensitivity | −4.1 dBm |
| Rx overload / max input | +3 dBm (avg receive range −11.9 to +3 dBm) |
| Extinction ratio | ≥ 2 dB |
| Supply voltage | 3.3 V (3.15–3.46 V) |
| Power dissipation | 1.2 W max (350 mA) |
| Operating temperature | Commercial |
| Diagnostics | Digital diagnostics, 2-wire serial |
| Compliance | RoHS 2011/65/EU |
| Lifecycle | Current production |
Optical and electrical values are from the Finisar / Coherent family datasheet; temperature grade is per part number. Confirm critical values with us before ordering.
About the Finisar FTLF8540P4BCV
The Finisar FTLF8540P4BCV (now a Coherent Corp. product, formerly II-VI) is a SFP28 25G eSR/SR dual-rate optical transceiver for 25 Gb/s links at 850nm over MMF, with reach up to 300m (OM4). It is a commercial-temperature part. It belongs to Finisar's FTLF8540 family, which has 2 orderable variants that differ by temperature grade, latch, receiver build or wavelength channel. Typical uses: 25G Ethernet server and leaf links, 5G fronthaul (eCPRI) and 10G-to-25G upgrades.
- 25.78Gb/s Extended Short Wavelength (eSR)
- Up to 25.78 Gb/s bi-directional data links
- 300m over OM4 / 200m over OM3 MMF
- 850nm Oxide VCSEL laser transmitter
- Built-in digital diagnostic functions
- Duplex LC connector
FTLF8540P4BCV: frequently asked questions
What is the Finisar FTLF8540P4BCV?
The FTLF8540P4BCV is a Finisar SFP28 transceiver for 25G eSR/SR dual-rate at 25 Gb/s. Finisar is now part of Coherent Corp. (formerly II-VI), and the part number is unchanged. It is used for 25G Ethernet server and leaf links, 5G fronthaul (eCPRI) and 10G-to-25G upgrades.
What is the maximum distance of the FTLF8540P4BCV?
The FTLF8540P4BCV is specified for up to 300m (OM4) over MMF. Long-reach optics may need an attenuator on short links; we can advise based on your link loss.
What is the optical power budget of the FTLF8540P4BCV?
Per the Finisar family datasheet, the FTLF8540P4BCV transmits −8.4 to +2.4 dBm avg; OMA −4.3 to +3 dBm and has a receiver sensitivity of −4.1 dBm. Maximum receiver input is +3 dBm (avg receive range −11.9 to +3 dBm).
Does the FTLF8540P4BCV support DDM / digital diagnostics?
Yes. Digital diagnostics, 2-wire serial. Your switch can read live temperature, voltage, laser bias and Tx/Rx power.
Which fiber and connector does the FTLF8540P4BCV use?
The FTLF8540P4BCV works at 850nm over MMF. Both ends of a link must use the same optical standard.
Will the FTLF8540P4BCV work in my Cisco, Juniper, Arista or HPE switch?
The FTLF8540P4BCV follows the SFP28 MSA, so it fits any matching port. It carries Finisar's own EEPROM programming; switches that check the module vendor may need a configuration setting or a vendor-branded optic. Send us your switch model and we confirm before dispatch.
FTLF8540P4BCV vs FTLF8540P4BCL: what is the difference?
Both are in Finisar's FTLF8540 family. They differ in build / application (25G eSR/SR dual-rate vs 25GBASE-SR/eSR single-rate). Pick the variant that matches your temperature, latch and wavelength needs.
What temperature range is the FTLF8540P4BCV rated for?
The FTLF8540P4BCV is a commercial-temperature part. Choose an industrial (T) variant for outdoor or uncontrolled sites.
What does the FTLF8540P4BCV part number mean?
The FTLF prefix marks Finisar's SFP / SFP28 / SFP56 family (incl. Fibre Channel). The C letter in the suffix usually marks the commercial temperature grade. The remaining characters identify the optical design and build variant.
Is your FTLF8540P4BCV genuine Finisar?
Yes. Next Gen Networks supplies original Finisar / Coherent modules, not third-party lookalikes or grey-market stock, and shares serial numbers on request.
What is the FTLF8540P4BCV price in India and how do I order?
The Finisar FTLF8540P4BCV price in India depends on quantity, delivery city and current stock. Next Gen Networks supplies it with a GST invoice (input tax credit ready) and pan-India dispatch from New Delhi. Send the part number, quantity and delivery city on WhatsApp +91-7827955775 or email Sales@nextgennetworks.in for a GST quote.
What power does the FTLF8540P4BCV need?
It runs from 3.3 V (3.15–3.46 V) with power dissipation of 1.2 W max (350 mA).
Documents
NextGen datasheetPDF · specs, FAQ & buying guideManufacturer datasheet
Finisar / Coherent family datasheet
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