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Finisar FTLF1523P1BTL OC-3 LR-2, STM L-1.2 SFP 1550nm DFB 80km
155 Mb/s OC-3 LR-2, STM L-1.2 (155M) SFP transceiver, 1550nm DFB, up to 80km, industrial (−40 to 85 °c) temperature.
- Manufacturer
- Coherent Corp. (formerly Finisar / II-VI)
- Mfr part number
- FTLF1523P1BTL
- Family
- FTLF1523P1
- Category
- Fiber optic transceiver modules
- Datasheet
- FTLF1523P1BTL datasheet (PDF)
FTLF1523P1BTL specifications
| Attribute | Value |
|---|---|
| Manufacturer | Coherent Corp. (Finisar) |
| Manufacturer part number | FTLF1523P1BTL |
| Product family | FTLF1523P1 |
| Form factor | SFP |
| Standards / application | SONET OC-3 LR-2 / SDH STM L-1.2 |
| Data rate | 155 Mb/s |
| Wavelength | 1480–1580 nm |
| Laser | Uncooled DFB 1550 nm |
| Reach | 80 km on 9/125 µm SMF |
| Connector | Duplex LC |
| Tx output power | −5 to 0 dBm |
| Rx sensitivity | −34 dBm |
| Rx overload / max input | −10 dBm |
| Extinction ratio | 10 dB min |
| Supply voltage | 3.3 V (3.10–3.50 V) |
| Power dissipation | <700 mW typical (Icc 300 mA max) |
| Operating temperature | Industrial (−40 to 85 °C) |
| Diagnostics | Digital diagnostics via 2-wire serial interface per SFP MSA (temperature, laser bias, Tx/Rx power, voltage; alarm/warning flags) |
| Compliance | Class 1 laser product; RoHS compliant (2011/65/EU) |
| Lifecycle | Current production |
| Variant note | Narrow extraction bail |
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 FTLF1523P1BTL
The Finisar FTLF1523P1BTL (now a Coherent Corp. product, formerly II-VI) is a SFP OC-3 LR-2, STM L-1.2 (155M) optical transceiver for 155 Mb/s links at 1550nm DFB over SMF, with reach up to 80km. It is an industrial-temperature part rated −40 to 85 °C. It belongs to Finisar's FTLF1523P1 family, which has 2 orderable variants that differ by temperature grade, latch, receiver build or wavelength channel. Typical uses: Fast/Gigabit Ethernet, SONET/SDH OC-3/OC-12, campus and access links, and legacy network upgrades.
- 155 Mb/s bi-directional data links
- Hot-pluggable SFP footprint
- Built-in digital diagnostic functions
- Uncooled DFB 1550nm laser transmitter
- Very low jitter
- Low power dissipation <700mW typical
FTLF1523P1BTL: frequently asked questions
What is the Finisar FTLF1523P1BTL?
The FTLF1523P1BTL is a Finisar SFP transceiver for OC-3 LR-2, STM L-1.2 (155M) at 155 Mb/s. Finisar is now part of Coherent Corp. (formerly II-VI), and the part number is unchanged. It is used for Fast/Gigabit Ethernet, SONET/SDH OC-3/OC-12, campus and access links, and legacy network upgrades.
What is the maximum distance of the FTLF1523P1BTL?
The FTLF1523P1BTL is specified for up to 80km 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 FTLF1523P1BTL?
Per the Finisar family datasheet, the FTLF1523P1BTL transmits −5 to 0 dBm and has a receiver sensitivity of −34 dBm. Maximum receiver input is −10 dBm.
Does the FTLF1523P1BTL support DDM / digital diagnostics?
Yes. Digital diagnostics via 2-wire serial interface per SFP MSA (temperature, laser bias, Tx/Rx power, voltage; alarm/warning flags). Your switch can read live temperature, voltage, laser bias and Tx/Rx power.
Which fiber and connector does the FTLF1523P1BTL use?
The FTLF1523P1BTL works at 1550nm DFB over SMF. Both ends of a link must use the same optical standard.
Will the FTLF1523P1BTL work in my Cisco, Juniper, Arista or HPE switch?
The FTLF1523P1BTL 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.
FTLF1523P1BTL vs FTLF1523P1WTL: what is the difference?
Both are in Finisar's FTLF1523P1 family and share the same core optics; the suffix marks a different build option (latch, receiver or ordering variant). Pick the variant that matches your temperature, latch and wavelength needs.
What temperature range is the FTLF1523P1BTL rated for?
The FTLF1523P1BTL is an industrial-temperature part rated −40 to 85 °C. Industrial grade suits outdoor cabinets, telecom huts and plant floors.
What does the FTLF1523P1BTL 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 your FTLF1523P1BTL 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 FTLF1523P1BTL price in India and how do I order?
The Finisar FTLF1523P1BTL 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 FTLF1523P1BTL need?
It runs from 3.3 V (3.10–3.50 V) with power dissipation of <700 mW typical (Icc 300 mA max).
Documents
NextGen datasheetPDF · specs, FAQ & buying guideManufacturer datasheet
Finisar / Coherent family datasheet
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