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Finisar FTCD4543E3PCM 4x100G-LR Gen3 QSFP-DD 10 km
400 Gb/s 4x100G-LR Gen3 QSFP-DD transceiver, 1310nm EML x4, up to 10 km, commercial temperature.
- Manufacturer
- Coherent Corp. (formerly Finisar / II-VI)
- Mfr part number
- FTCD4543E3PCM
- Family
- FTCD4543
- Category
- Fiber optic transceiver modules
- Datasheet
- FTCD4543E3PCM datasheet (PDF)
FTCD4543E3PCM specifications
| Attribute | Value |
|---|---|
| Manufacturer | Coherent Corp. (Finisar) |
| Manufacturer part number | FTCD4543E3PCM |
| Product family | FTCD4543 |
| Form factor | QSFP-DD |
| Standards / application | IEEE 802.3cu; IEEE P802.3bm; QSFP-DD MSA; QSFP28 MSA |
| Data rate | 425 Gb/s (4x100Gb/s PAM4; 8x50G PAM4 electrical) |
| Wavelength | 1304.5–1317.5 nm |
| Laser | 4x EML (Class 1) |
| Receiver | PIN |
| Reach | 10 km over parallel SMF |
| Connector | Parallel MPO-12 |
| Tx output power | −2 to 4.5 dBm per lane (E2); −1.9 to 4.8 dBm (E3) |
| Rx sensitivity | −6.1 dBm OMAouter (TECQ < 1.4 dB) |
| Rx overload / max input | 5.8 dBm damage threshold |
| Extinction ratio | 3.5 dB min |
| Supply voltage | 3.3 V (3.135–3.465 V) |
| Power dissipation | < 12 W c-temp / < 10 W limited temp (E2); < 8 W (E3) |
| Operating temperature | Commercial |
| Diagnostics | I2C management interface |
| Compliance | RoHS-6 |
| Lifecycle | Current production |
| Variant note | Gen3, < 8 W, 0–70 °C (E3 datasheet) |
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 FTCD4543E3PCM
The Finisar FTCD4543E3PCM (now a Coherent Corp. product, formerly II-VI) is a QSFP-DD 4x100G-LR Gen3 optical transceiver for 400 Gb/s links at 1310nm EML x4 over Parallel SMF, MPO12, with reach up to 10 km. It is a commercial-temperature part. It belongs to Finisar's FTCD4543 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
- 10 km over parallel SMF
- 4x100Gb/s PAM4 serial lanes
- 8x50G PAM4 retimed electrical interface
- Single 3.3V power supply
FTCD4543E3PCM: frequently asked questions
What is the Finisar FTCD4543E3PCM?
The FTCD4543E3PCM is a Finisar QSFP-DD transceiver for 4x100G-LR Gen3 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 FTCD4543E3PCM?
The FTCD4543E3PCM is specified for up to 10 km over Parallel SMF, MPO12. 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 FTCD4543E3PCM?
Per the Finisar family datasheet, the FTCD4543E3PCM transmits −2 to 4.5 dBm per lane (E2); −1.9 to 4.8 dBm (E3) and has a receiver sensitivity of −6.1 dBm OMAouter (TECQ < 1.4 dB). Maximum receiver input is 5.8 dBm damage threshold.
Does the FTCD4543E3PCM support DDM / digital diagnostics?
Yes. I2C management interface. Your switch can read live temperature, voltage, laser bias and Tx/Rx power.
Which fiber and connector does the FTCD4543E3PCM use?
The FTCD4543E3PCM works at 1310nm EML x4 over Parallel SMF, MPO12. Both ends of a link must use the same optical standard.
Will the FTCD4543E3PCM work in my Cisco, Juniper, Arista or HPE switch?
The FTCD4543E3PCM 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.
FTCD4543E3PCM vs FTCD4543E2PCM: what is the difference?
Both are in Finisar's FTCD4543 family. They differ in build / application (4x100G-LR Gen3 vs 400G DR4++ / 4x100G-LR1). Pick the variant that matches your temperature, latch and wavelength needs.
What temperature range is the FTCD4543E3PCM rated for?
The FTCD4543E3PCM is a commercial-temperature part. Choose an industrial (T) variant for outdoor or uncontrolled sites.
What does the FTCD4543E3PCM 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 FTCD4543E3PCM 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 FTCD4543E3PCM price in India and how do I order?
The Finisar FTCD4543E3PCM 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 FTCD4543E3PCM need?
It runs from 3.3 V (3.135–3.465 V) with power dissipation of < 12 W c-temp / < 10 W limited temp (E2); < 8 W (E3).
Documents
NextGen datasheetPDF · specs, FAQ & buying guideManufacturer datasheet
Finisar / Coherent family datasheet
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