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Finisar FTLF8519P2BTL 1000BASE-SX SFP 850nm 550m
up to 2.125 Gb/s 1000BASE-SX / 1G-2G FC (2.125G) SFP transceiver, 850nm, up to 550m, industrial temperature.
- Manufacturer
- Coherent Corp. (formerly Finisar / II-VI)
- Mfr part number
- FTLF8519P2BTL
- Family
- FTLF8519P2
- Category
- Fiber optic transceiver modules
- Datasheet
- FTLF8519P2BTL datasheet (PDF)
FTLF8519P2BTL specifications
| Attribute | Value |
|---|---|
| Manufacturer | Coherent Corp. (Finisar) |
| Manufacturer part number | FTLF8519P2BTL |
| Product family | FTLF8519P2 |
| Form factor | SFP |
| Standards / application | 1000BASE-SX / 1G-2G FC (2.125G) |
| Data rate | up to 2.125 Gb/s |
| Wavelength | 850nm |
| Reach | 550m |
| Operating temperature | Industrial |
| Lifecycle | Legacy / end-of-life |
Optical and electrical values are from the Finisar / Coherent family datasheet or product page where available; temperature grade is per part number. Confirm critical values with us before ordering.
About the Finisar FTLF8519P2BTL
The Finisar FTLF8519P2BTL (now a Coherent Corp. product, formerly II-VI) is a SFP 1000BASE-SX / 1G-2G FC (2.125G) optical transceiver for up to 2.125 Gb/s links at 850nm over MMF, with reach up to 550m. It is an industrial-temperature part. It belongs to Finisar's FTLF8519P2 family, which has 6 orderable variants that differ by temperature grade, latch, receiver build or wavelength channel. This is a legacy Finisar part; we help buyers find remaining stock or a current Coherent alternative. Typical uses: Gigabit Ethernet, 1/2/4G Fibre Channel SAN, SONET OC-48 / STM-16 and CWDM/DWDM metro links.
- up to 2.125 Gb/s SFP · up to 550m
- 850nm · MMF
- Industrial temperature grade
- Part of the Finisar FTLF8519P2 family (6 variants)
FTLF8519P2BTL: frequently asked questions
What is the Finisar FTLF8519P2BTL?
The FTLF8519P2BTL is a Finisar SFP transceiver for 1000BASE-SX / 1G-2G FC (2.125G) at up to 2.125 Gb/s. Finisar is now part of Coherent Corp. (formerly II-VI), and the part number is unchanged. It is used for Gigabit Ethernet, 1/2/4G Fibre Channel SAN, SONET OC-48 / STM-16 and CWDM/DWDM metro links.
What is the maximum distance of the FTLF8519P2BTL?
The FTLF8519P2BTL is specified for up to 550m over MMF. Long-reach optics may need an attenuator on short links; we can advise based on your link loss.
Which fiber and connector does the FTLF8519P2BTL use?
The FTLF8519P2BTL works at 850nm over MMF. Both ends of a link must use the same optical standard.
Will the FTLF8519P2BTL work in my Cisco, Juniper, Arista or HPE switch?
The FTLF8519P2BTL follows the SFP 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.
FTLF8519P2BTL vs FTLF8519P2BCL: what is the difference?
Both are in Finisar's FTLF8519P2 family. They differ in temperature grade (industrial vs commercial). Pick the variant that matches your temperature, latch and wavelength needs.
What temperature range is the FTLF8519P2BTL rated for?
The FTLF8519P2BTL is an industrial-temperature part (per Finisar's part-number temperature code). Industrial grade suits outdoor cabinets, telecom huts and plant floors.
What does the FTLF8519P2BTL part number mean?
The FTLF prefix marks Finisar's SFP / SFP28 / SFP56 family (incl. Fibre Channel). The I letter in the suffix usually marks the industrial temperature grade. The remaining characters identify the optical design and build variant.
Is the FTLF8519P2BTL still available?
The FTLF8519P2BTL is a legacy Finisar part, so new production is limited or ended. Next Gen Networks helps source remaining genuine stock and can suggest a current Coherent alternative with the same reach and wavelength.
What is the FTLF8519P2BTL price in India and how do I order?
The Finisar FTLF8519P2BTL 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.
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