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Finisar FTL410QD4N 40G eSR4/10GBASE-SR QSFP+ 850nm 300m
40 Gb/s 40G eSR4/10GBASE-SR E-temp Gen4 QSFP+ transceiver, 850nm, up to 300m, extended temperature.
- Manufacturer
- Coherent Corp. (formerly Finisar / II-VI)
- Mfr part number
- FTL410QD4N
- Family
- FTL410
- Category
- Fiber optic transceiver modules
- Datasheet
- FTL410QD4N datasheet (PDF)
FTL410QD4N specifications
| Attribute | Value |
|---|---|
| Manufacturer | Coherent Corp. (Finisar) |
| Manufacturer part number | FTL410QD4N |
| Product family | FTL410 |
| Form factor | QSFP+ |
| Standards / application | QSFP+ MSA; IEEE 802.3ba 40GBASE-SR4; 4x10GBASE-SR breakout |
| Data rate | 4 x 10.5 Gb/s max (1.06–10.5 Gb/s per lane); 42 Gb/s aggregate |
| Wavelength | 840–860 nm |
| Laser | 4x 850 nm VCSEL array |
| Receiver | PIN |
| Reach | QE: 100 m OM3 / 150 m OM4; QD (eSR4): 300 m OM3 / 400 m OM4 |
| Connector | MPO (1x12) |
| Tx output power | QE: −7.6 to −1.0 dBm per lane (OMA −5.6 to +3.0); QD: −7.5 to +0.5 dBm per lane (OMA −2.5 to +3.0) |
| Rx sensitivity | QE: −5.4 dBm stressed OMA per lane; QD: −11.1 dBm unstressed / −7.5 dBm stressed OMA |
| Rx overload / max input | +3.4 dBm damage threshold |
| Extinction ratio | ≥ 3.0 dB |
| Supply voltage | 3.3 V (3.15–3.45 V) |
| Power dissipation | QE2C/QD2C: 1.5 W max; QE3C: < 1.2 W; QE4C: < 1 W |
| Operating temperature | Extended |
| Diagnostics | Digital diagnostics via I2C (incl. optical power monitoring) |
| Compliance | RoHS-6; Class 1 laser per IEC 60825-1 |
| Lifecycle | Current production |
| Variant note | eSR4, 0 to 85 °C (brochure) |
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 FTL410QD4N
The Finisar FTL410QD4N (now a Coherent Corp. product, formerly II-VI) is a QSFP+ 40G eSR4/10GBASE-SR E-temp Gen4 optical transceiver for 40 Gb/s links at 850nm over MMF parallel (MPO), with reach up to 300m. It is an extended-temperature part. It belongs to Finisar's FTL410 family, which has 9 orderable variants that differ by temperature grade, latch, receiver build or wavelength channel. Typical uses: 40G Ethernet aggregation, spine links and 4 × 10G breakout.
- Four-channel full-duplex transceiver module
- Hot Pluggable QSFP+ form factor
- Reliable VCSEL array technology
- Multirate 1.06Gb/s to 10.5Gb/s per channel
- Built-in digital diagnostic functions
- Single 1x12 MPO receptacle
FTL410QD4N: frequently asked questions
What is the Finisar FTL410QD4N?
The FTL410QD4N is a Finisar QSFP+ transceiver for 40G eSR4/10GBASE-SR E-temp Gen4 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 FTL410QD4N?
The FTL410QD4N is specified for up to 300m over MMF parallel (MPO). 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 FTL410QD4N?
Per the Finisar family datasheet, the FTL410QD4N transmits QE: −7.6 to −1.0 dBm per lane (OMA −5.6 to +3.0); QD: −7.5 to +0.5 dBm per lane (OMA −2.5 to +3.0) and has a receiver sensitivity of QE: −5.4 dBm stressed OMA per lane; QD: −11.1 dBm unstressed / −7.5 dBm stressed OMA. Maximum receiver input is +3.4 dBm damage threshold.
Does the FTL410QD4N support DDM / digital diagnostics?
Yes. Digital diagnostics via I2C (incl. optical power monitoring). Your switch can read live temperature, voltage, laser bias and Tx/Rx power.
Which fiber and connector does the FTL410QD4N use?
The FTL410QD4N works at 850nm over MMF parallel (MPO). Both ends of a link must use the same optical standard.
Will the FTL410QD4N work in my Cisco, Juniper, Arista or HPE switch?
The FTL410QD4N 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.
FTL410QD4N vs FTL410QE2C: what is the difference?
Both are in Finisar's FTL410 family. They differ in reach (300m vs 150m (OM4)); build / application (40G eSR4/10GBASE-SR E-temp Gen4 vs 40GBASE-SR4 Gen2 (4x10G breakout)). Pick the variant that matches your temperature, latch and wavelength needs.
What temperature range is the FTL410QD4N rated for?
The FTL410QD4N is an extended-temperature part. Choose an industrial (T) variant for outdoor or uncontrolled sites.
What does the FTL410QD4N part number mean?
The FTL41 prefix marks Finisar's 40G QSFP+ family. The E letter in the suffix usually marks the extended temperature grade. The remaining characters identify the optical design and build variant.
Is your FTL410QD4N 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 FTL410QD4N price in India and how do I order?
The Finisar FTL410QD4N 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 FTL410QD4N need?
It runs from 3.3 V (3.15–3.45 V) with power dissipation of QE2C/QD2C: 1.5 W max; QE3C: < 1.2 W; QE4C: < 1 W.
Documents
NextGen datasheetPDF · specs, FAQ & buying guideManufacturer datasheet
Finisar / Coherent family datasheet
Related Finisar parts
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