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Finisar FTL4C2QE1C 40GE LM4 duplex multimode QSFP+ 160m
40 Gb/s 40GE LM4 duplex multimode Gen2 QSFP+ transceiver, CWDM 1271-1331nm, up to 160m (MMF).
- Manufacturer
- Coherent Corp. (formerly Finisar / II-VI)
- Mfr part number
- FTL4C2QE1C
- Family
- FTL4C2
- Category
- Fiber optic transceiver modules
- Datasheet
- FTL4C2QE1C datasheet (PDF)
FTL4C2QE1C specifications
| Attribute | Value |
|---|---|
| Manufacturer | Coherent Corp. (Finisar) |
| Manufacturer part number | FTL4C2QE1C |
| Product family | FTL4C2 |
| Form factor | QSFP+ |
| Standards / application | QSFP+ MSA; IEEE 802.3ba 40GBASE-LR4 (LM4 over duplex MMF); XLPPI |
| Data rate | 41.2 Gb/s aggregate; 10.3 Gb/s per lane |
| Wavelength | 1264.5–1277.5 / 1284.5–1297.5 / 1304.5–1317.5 / 1324.5–1337.5 nm |
| Laser | Uncooled 4x10Gb/s CWDM transmitter |
| Receiver | 4 photodetectors, 10.3 Gb/s each |
| Reach | 140 m OM3 / 160 m OM4 (duplex MMF) |
| Connector | Duplex LC (multimode) |
| Tx output power | −7.0 to 4.3 dBm avg per lane |
| Rx sensitivity | −10.5 dBm OMA per lane |
| Rx overload / max input | Damage threshold 5.5 dBm per lane |
| Extinction ratio | 3.5 dB min |
| Supply voltage | 3.3 V (3.1–3.47 V) |
| Power dissipation | < 3.5 W |
| Operating temperature | 0 to 70 °C case |
| Diagnostics | Built-in digital diagnostics incl. Tx/Rx power monitoring (I2C) |
| Compliance | RoHS-6 |
| Lifecycle | Ask for availability |
| Variant note | Only part in datasheet (EPS lists it as Gen2, 160 m) |
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 FTL4C2QE1C
The Finisar FTL4C2QE1C (now a Coherent Corp. product, formerly II-VI) is a QSFP+ 40GE LM4 duplex multimode Gen2 optical transceiver for 40 Gb/s links at CWDM 1271-1331nm over MMF duplex (LC), with reach up to 160m (MMF). Typical uses: 40G Ethernet aggregation, spine links and 4 × 10G breakout.
- Hot-pluggable QSFP+ form factor
- Supports 41.2 Gb/s aggregate bit rate
- Power dissipation < 3.5W
- XLPPI electrical interface
- RoHS-6 compliant
FTL4C2QE1C: frequently asked questions
What is the Finisar FTL4C2QE1C?
The FTL4C2QE1C is a Finisar QSFP+ transceiver for 40GE LM4 duplex multimode Gen2 at 40 Gb/s. Finisar is now part of Coherent Corp. (formerly II-VI), and the part number is unchanged. It is used for 40G Ethernet aggregation, spine links and 4 × 10G breakout.
What is the maximum distance of the FTL4C2QE1C?
The FTL4C2QE1C is specified for up to 160m (MMF) over MMF duplex (LC). 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 FTL4C2QE1C?
Per the Finisar family datasheet, the FTL4C2QE1C transmits −7.0 to 4.3 dBm avg per lane and has a receiver sensitivity of −10.5 dBm OMA per lane. Maximum receiver input is Damage threshold 5.5 dBm per lane.
Does the FTL4C2QE1C support DDM / digital diagnostics?
Yes. Built-in digital diagnostics incl. Tx/Rx power monitoring (I2C). Your switch can read live temperature, voltage, laser bias and Tx/Rx power.
Which fiber and connector does the FTL4C2QE1C use?
The FTL4C2QE1C works at CWDM 1271-1331nm over MMF duplex (LC). CWDM/DWDM optics must match the channel of your mux/demux port. Both ends of a link must use the same optical standard.
Will the FTL4C2QE1C work in my Cisco, Juniper, Arista or HPE switch?
The FTL4C2QE1C follows the QSFP+ 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.
What does the FTL4C2QE1C part number mean?
The FTL4 prefix marks Finisar's 40G QSFP+ family. The remaining characters identify the optical design and build variant.
Is your FTL4C2QE1C 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 FTL4C2QE1C price in India and how do I order?
The Finisar FTL4C2QE1C 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 FTL4C2QE1C need?
It runs from 3.3 V (3.1–3.47 V) with power dissipation of < 3.5 W.
Documents
NextGen datasheetPDF · specs, FAQ & buying guideManufacturer datasheet
Finisar / Coherent family datasheet
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