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Finisar FTLF1523P1WTL 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
- FTLF1523P1WTL
- Family
- FTLF1523P1
- Category
- Fiber optic transceiver modules
- Datasheet
- FTLF1523P1WTL datasheet (PDF)
FTLF1523P1WTL specifications
| Attribute | Value |
|---|---|
| Manufacturer | Coherent Corp. (Finisar) |
| Manufacturer part number | FTLF1523P1WTL |
| 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 | Legacy / end-of-life |
| Variant note | Wide 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 FTLF1523P1WTL
The Finisar FTLF1523P1WTL (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. This is a legacy Finisar part; we help buyers find remaining stock or a current Coherent alternative. 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
FTLF1523P1WTL: frequently asked questions
What is the Finisar FTLF1523P1WTL?
The FTLF1523P1WTL 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 FTLF1523P1WTL?
The FTLF1523P1WTL 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 FTLF1523P1WTL?
Per the Finisar family datasheet, the FTLF1523P1WTL transmits −5 to 0 dBm and has a receiver sensitivity of −34 dBm. Maximum receiver input is −10 dBm.
Does the FTLF1523P1WTL 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 FTLF1523P1WTL use?
The FTLF1523P1WTL works at 1550nm DFB over SMF. Both ends of a link must use the same optical standard.
Will the FTLF1523P1WTL work in my Cisco, Juniper, Arista or HPE switch?
The FTLF1523P1WTL 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.
FTLF1523P1WTL vs FTLF1523P1BTL: 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 FTLF1523P1WTL rated for?
The FTLF1523P1WTL is an industrial-temperature part rated −40 to 85 °C. Industrial grade suits outdoor cabinets, telecom huts and plant floors.
What does the FTLF1523P1WTL 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 FTLF1523P1WTL still available?
The FTLF1523P1WTL 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 FTLF1523P1WTL price in India and how do I order?
The Finisar FTLF1523P1WTL 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 FTLF1523P1WTL 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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