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Finisar FTLF1436W5BCL 25GE LR single-rate 0-70C SFP28 1310nm 10km
25 Gb/s 25GE LR single-rate 0-70C SFP28 transceiver, 1310nm, up to 10km, commercial temperature.
- Manufacturer
- Coherent Corp. (formerly Finisar / II-VI)
- Mfr part number
- FTLF1436W5BCL
- Family
- FTLF1436W5
- Category
- Fiber optic transceiver modules
- Datasheet
- FTLF1436W5BCL datasheet (PDF)
FTLF1436W5BCL specifications
| Attribute | Value |
|---|---|
| Manufacturer | Coherent Corp. (Finisar) |
| Manufacturer part number | FTLF1436W5BCL |
| Product family | FTLF1436W5 |
| Form factor | SFP28 |
| Standards / application | IEEE 802.3cc; SFF-8472 Rev 12.2b; SFF-8432a; SFF-8431 Rev 3.0c |
| Data rate | 25.78 Gb/s and 10.3125 Gb/s (dual-rate) |
| Wavelength | 1295–1325 nm |
| Laser | 1310 nm DFB |
| Receiver | PIN |
| Reach | Up to 10 km on 9/125 µm SMF |
| Connector | Duplex LC |
| Tx output power | −7.0 to +2.0 dBm avg; OMA −4 to +2.2 dBm @25.78G |
| Rx sensitivity | −12 dBm unstressed OMA @25.78G (−12.6 dBm @10.3G); stressed −11.9 dBm |
| Rx overload / max input | +2.2 dBm OMA |
| Extinction ratio | 3 dB (as extracted) |
| Supply voltage | 3.3 V (3.15–3.46 V) |
| Power dissipation | 1.2 W max (347 mA) |
| Operating temperature | Commercial |
| Diagnostics | SFF-8472 digital diagnostics, I2C, alarm/warning flags |
| Compliance | RoHS 2011/65/EU; Class 1 laser (FDA/CDRH, EN 60825) |
| Lifecycle | Ask for availability |
| Variant note | 0–70 °C, 10 km (Mouser) |
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 FTLF1436W5BCL
The Finisar FTLF1436W5BCL (now a Coherent Corp. product, formerly II-VI) is a SFP28 25GE LR single-rate 0-70C optical transceiver for 25 Gb/s links at 1310nm over SMF, with reach up to 10km. It is a commercial-temperature part. It belongs to Finisar's FTLF1436W5 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.
- 25G Ethernet Long Wavelength SFP28
- Dual-rate 25.78 / 10.3125 Gb/s
- 1310nm DFB laser transmitter
- Up to 10 km on 9/125µm SMF
- Optical/electrical loopback support
- Metal enclosure for EMI reduction
FTLF1436W5BCL: frequently asked questions
What is the Finisar FTLF1436W5BCL?
The FTLF1436W5BCL is a Finisar SFP28 transceiver for 25GE LR single-rate 0-70C 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 FTLF1436W5BCL?
The FTLF1436W5BCL is specified for up to 10km over SMF. 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 FTLF1436W5BCL?
Per the Finisar family datasheet, the FTLF1436W5BCL transmits −7.0 to +2.0 dBm avg; OMA −4 to +2.2 dBm @25.78G and has a receiver sensitivity of −12 dBm unstressed OMA @25.78G (−12.6 dBm @10.3G); stressed −11.9 dBm. Maximum receiver input is +2.2 dBm OMA.
Does the FTLF1436W5BCL support DDM / digital diagnostics?
Yes. SFF-8472 digital diagnostics, I2C, alarm/warning flags. Your switch can read live temperature, voltage, laser bias and Tx/Rx power.
Which fiber and connector does the FTLF1436W5BCL use?
The FTLF1436W5BCL works at 1310nm over SMF. Both ends of a link must use the same optical standard.
Will the FTLF1436W5BCL work in my Cisco, Juniper, Arista or HPE switch?
The FTLF1436W5BCL 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.
FTLF1436W5BCL vs FTLF1436W5BTV: what is the difference?
Both are in Finisar's FTLF1436W5 family. They differ in temperature grade (commercial vs industrial); build / application (25GE LR single-rate 0-70C vs 25GE LR/10G LR, eCPRI 24.33G (5G fronthaul)). Pick the variant that matches your temperature, latch and wavelength needs.
What temperature range is the FTLF1436W5BCL rated for?
The FTLF1436W5BCL is a commercial-temperature part. Choose an industrial (T) variant for outdoor or uncontrolled sites.
What does the FTLF1436W5BCL 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 FTLF1436W5BCL 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 FTLF1436W5BCL price in India and how do I order?
The Finisar FTLF1436W5BCL 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 FTLF1436W5BCL need?
It runs from 3.3 V (3.15–3.46 V) with power dissipation of 1.2 W max (347 mA).
Documents
NextGen datasheetPDF · specs, FAQ & buying guideManufacturer datasheet
Finisar / Coherent family datasheet
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