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Finisar FTCD4323E4PCL 400G FR4+ QSFP-DD 1310nm CWDM4 10 km
400 Gb/s 400G FR4+ / LR4-10 (Gen4) QSFP-DD transceiver, 1310nm CWDM4, up to 10 km, commercial temperature.
- Manufacturer
- Coherent Corp. (formerly Finisar / II-VI)
- Mfr part number
- FTCD4323E4PCL
- Family
- FTCD4323
- Category
- Fiber optic transceiver modules
- Datasheet
- FTCD4323E4PCL datasheet (PDF)
FTCD4323E4PCL specifications
| Attribute | Value |
|---|---|
| Manufacturer | Coherent Corp. (Finisar) |
| Manufacturer part number | FTCD4323E4PCL |
| Product family | FTCD4323 |
| Form factor | QSFP-DD |
| Standards / application | 400G-LR4-10 Technical Specification Rev1.0; IEEE 802.3bs; QSFP-DD MSA; QSFP28 MSA |
| Data rate | 425 Gb/s aggregate |
| Wavelength | 1264.5–1277.5, 1284.5–1297.5, 1304.5–1317.5, 1324.5–1337.5 nm |
| Laser | 4-lane CWDM (Class 1) |
| Receiver | PIN |
| Reach | 10 km on SMF (G.652) |
| Connector | Duplex LC |
| Tx output power | −2.7 to 5.1 dBm per lane |
| Rx sensitivity | −6.8 dBm OMAouter (TECQ < 1.4 dB) |
| Rx overload / max input | 6.1 dBm damage threshold |
| Extinction ratio | 3.5 dB min |
| Supply voltage | 3.3 V (3.135–3.465 V) |
| Power dissipation | < 12 W |
| Operating temperature | Commercial |
| Diagnostics | I2C-based diagnostics interface |
| Compliance | RoHS-6 |
| Lifecycle | Current production |
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 FTCD4323E4PCL
The Finisar FTCD4323E4PCL (now a Coherent Corp. product, formerly II-VI) is a QSFP-DD 400G FR4+ / LR4-10 (Gen4) optical transceiver for 400 Gb/s links at 1310nm CWDM4 over Duplex SMF, LC, with reach up to 10 km. It is a commercial-temperature part. It belongs to Finisar's FTCD4323 family, which has 3 orderable variants that differ by temperature grade, latch, receiver build or wavelength channel. Typical uses: 400G data-centre spine, AI/ML clusters and 400ZR / ZR+ coherent DCI.
- Hot-pluggable QSFP-DD type 2 form factor
- Supports 425Gb/s aggregate bit rate
- Power dissipation < 12W
- Case temperature range of 0°C to +70°C
- Single 3.3V power supply
- Maximum link length of 10km on SMF
FTCD4323E4PCL: frequently asked questions
What is the Finisar FTCD4323E4PCL?
The FTCD4323E4PCL is a Finisar QSFP-DD transceiver for 400G FR4+ / LR4-10 (Gen4) at 400 Gb/s. Finisar is now part of Coherent Corp. (formerly II-VI), and the part number is unchanged. It is used for 400G data-centre spine, AI/ML clusters and 400ZR / ZR+ coherent DCI.
What is the maximum distance of the FTCD4323E4PCL?
The FTCD4323E4PCL is specified for up to 10 km over Duplex SMF, 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 FTCD4323E4PCL?
Per the Finisar family datasheet, the FTCD4323E4PCL transmits −2.7 to 5.1 dBm per lane and has a receiver sensitivity of −6.8 dBm OMAouter (TECQ < 1.4 dB). Maximum receiver input is 6.1 dBm damage threshold.
Does the FTCD4323E4PCL support DDM / digital diagnostics?
Yes. I2C-based diagnostics interface. Your switch can read live temperature, voltage, laser bias and Tx/Rx power.
Which fiber and connector does the FTCD4323E4PCL use?
The FTCD4323E4PCL works at 1310nm CWDM4 over Duplex SMF, 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 FTCD4323E4PCL work in my Cisco, Juniper, Arista or HPE switch?
The FTCD4323E4PCL follows the QSFP-DD 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.
FTCD4323E4PCL vs FTCD4323E2PCL: what is the difference?
Both are in Finisar's FTCD4323 family. They differ in build / application (400G FR4+ / LR4-10 (Gen4) vs 400G-LR4-10 (FR4+)). Pick the variant that matches your temperature, latch and wavelength needs.
What temperature range is the FTCD4323E4PCL rated for?
The FTCD4323E4PCL is a commercial-temperature part. Choose an industrial (T) variant for outdoor or uncontrolled sites.
What does the FTCD4323E4PCL part number mean?
The FTCD prefix marks Finisar's 400G family. The C letter in the suffix usually marks the commercial temperature grade. The remaining characters identify the optical design and build variant.
Is your FTCD4323E4PCL 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 FTCD4323E4PCL price in India and how do I order?
The Finisar FTCD4323E4PCL 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 FTCD4323E4PCL need?
It runs from 3.3 V (3.135–3.465 V) with power dissipation of < 12 W.
Documents
NextGen datasheetPDF · specs, FAQ & buying guideManufacturer datasheet
Finisar / Coherent family datasheet
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