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Finisar FTLF8538P4BCV 25GE low-latency SR SFP28 850nm
25 Gb/s 25GE low-latency SR dual-rate 25/10G SFP28 transceiver, 850nm, up to up to 100m OM4 w/ RS-FEC, commercial temperature.
- Manufacturer
- Coherent Corp. (formerly Finisar / II-VI)
- Mfr part number
- FTLF8538P4BCV
- Family
- FTLF8538
- Category
- Fiber optic transceiver modules
- Datasheet
- FTLF8538P4BCV datasheet (PDF)
FTLF8538P4BCV specifications
| Attribute | Value |
|---|---|
| Manufacturer | Coherent Corp. (Finisar) |
| Manufacturer part number | FTLF8538P4BCV |
| Product family | FTLF8538 |
| Form factor | SFP28 |
| Standards / application | IEEE 802.3by; SFF-8472 Rev 12.2b; SFF-8402g; SFF-8432a; SFF-8431 Rev 4.1c |
| Data rate | 25.78 Gb/s |
| Wavelength | 840–860 nm |
| Laser | 850 nm oxide VCSEL |
| Reach | 100 m OM4; 70 m OM3; 20 m OM2 |
| Connector | Duplex LC |
| Tx output power | −8.4 to +2.4 dBm avg; OMA −6.4 to +3 dBm |
| Rx sensitivity | −5.2 dBm stressed OMA |
| Rx overload / max input | +3 dBm (avg receive range −10.3 to +3 dBm) |
| Extinction ratio | ≥ 2 dB |
| Supply voltage | 3.3 V (3.15–3.46 V) |
| Power dissipation | 1.2 W max (290 mA) |
| Operating temperature | Commercial |
| Diagnostics | SFF-8472 digital diagnostics; Tx equalisation / Rx emphasis control via 2-wire |
| Compliance | RoHS 2011/65/EU; Class 1 laser (FDA/CDRH, EN/IEC 60825) |
| Lifecycle | Ask for availability |
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 FTLF8538P4BCV
The Finisar FTLF8538P4BCV (now a Coherent Corp. product, formerly II-VI) is a SFP28 25GE low-latency SR dual-rate 25/10G optical transceiver for 25 Gb/s links at 850nm over MMF, with reach up to up to 100m OM4 w/ RS-FEC. It is a commercial-temperature part. It belongs to Finisar's FTLF8538 family, which has 4 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 Reach SR
- Hot-pluggable SFP+ footprint
- Built-in digital diagnostic functions
- 850nm Oxide VCSEL laser transmitter
- Duplex LC connector
- Metal enclosure, for lower EMI
FTLF8538P4BCV: frequently asked questions
What is the Finisar FTLF8538P4BCV?
The FTLF8538P4BCV is a Finisar SFP28 transceiver for 25GE low-latency SR dual-rate 25/10G 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 FTLF8538P4BCV?
The FTLF8538P4BCV is specified for up to up to 100m OM4 w/ RS-FEC 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 FTLF8538P4BCV?
Per the Finisar family datasheet, the FTLF8538P4BCV transmits −8.4 to +2.4 dBm avg; OMA −6.4 to +3 dBm and has a receiver sensitivity of −5.2 dBm stressed OMA. Maximum receiver input is +3 dBm (avg receive range −10.3 to +3 dBm).
Does the FTLF8538P4BCV support DDM / digital diagnostics?
Yes. SFF-8472 digital diagnostics; Tx equalisation / Rx emphasis control via 2-wire. Your switch can read live temperature, voltage, laser bias and Tx/Rx power.
Which fiber and connector does the FTLF8538P4BCV use?
The FTLF8538P4BCV works at 850nm over MMF. Both ends of a link must use the same optical standard.
Will the FTLF8538P4BCV work in my Cisco, Juniper, Arista or HPE switch?
The FTLF8538P4BCV 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.
FTLF8538P4BCV vs FTLF8538P4BCL: what is the difference?
Both are in Finisar's FTLF8538 family. They differ in build / application (25GE low-latency SR dual-rate 25/10G vs 25GE low-latency SR, 40m OM4 FEC-free). Pick the variant that matches your temperature, latch and wavelength needs.
What temperature range is the FTLF8538P4BCV rated for?
The FTLF8538P4BCV is a commercial-temperature part. Choose an industrial (T) variant for outdoor or uncontrolled sites.
What does the FTLF8538P4BCV 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 FTLF8538P4BCV 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 FTLF8538P4BCV price in India and how do I order?
The Finisar FTLF8538P4BCV 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 FTLF8538P4BCV need?
It runs from 3.3 V (3.15–3.46 V) with power dissipation of 1.2 W max (290 mA).
Documents
NextGen datasheetPDF · specs, FAQ & buying guideManufacturer datasheet
Finisar / Coherent family datasheet
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