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Finisar FTCD4538E1PCM-4A 400G DR4+ QSFP112 2 km
400 Gb/s 400G DR4+ (400G mode preset) QSFP112 transceiver, 1310nm EML x4, up to 2 km, commercial temperature.
- Manufacturer
- Coherent Corp. (formerly Finisar / II-VI)
- Mfr part number
- FTCD4538E1PCM-4A
- Family
- FTCD4538
- Category
- Fiber optic transceiver modules
- Datasheet
- FTCD4538E1PCM-4A datasheet (PDF)
FTCD4538E1PCM-4A specifications
| Attribute | Value |
|---|---|
| Manufacturer | Coherent Corp. (Finisar) |
| Manufacturer part number | FTCD4538E1PCM-4A |
| Product family | FTCD4538 |
| Form factor | QSFP112 |
| Standards / application | Aligned with IEEE 802.3bs (400G-DR4+); QSFP112 MSA |
| Data rate | 425 Gb/s (4x 53.125 GBd PAM4) |
| Wavelength | 1304.5–1317.5 nm |
| Laser | 4x EML |
| Receiver | PIN |
| Reach | 2 km on SMF |
| Connector | Parallel MPO-12 |
| Tx output power | −2.4 to 4 dBm per lane |
| Rx sensitivity | −4.4 dBm OMAouter per lane |
| Rx overload / max input | 5.5 dBm damage threshold |
| Extinction ratio | 3.5 dB min |
| Supply voltage | 3.3 V (3.135–3.465 V) |
| Power dissipation | < 8.5 W |
| Operating temperature | Commercial |
| Diagnostics | I2C-based diagnostics interface |
| Compliance | RoHS-6 |
| Lifecycle | Current production |
| Variant note | Application select set to 400G mode |
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 FTCD4538E1PCM-4A
The Finisar FTCD4538E1PCM-4A (now a Coherent Corp. product, formerly II-VI) is a QSFP112 400G DR4+ (400G mode preset) optical transceiver for 400 Gb/s links at 1310nm EML x4 over Parallel SMF, MPO12, with reach up to 2 km. It is a commercial-temperature part. It belongs to Finisar's FTCD4538 family, which has 2 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 QSFP112 form factor type 2
- Supports 425Gb/s aggregate bit rate
- Power dissipation <8.5W
- 4x100Gb/s PAM4 serial lanes
- I2C management interface
FTCD4538E1PCM-4A: frequently asked questions
What is the Finisar FTCD4538E1PCM-4A?
The FTCD4538E1PCM-4A is a Finisar QSFP112 transceiver for 400G DR4+ (400G mode preset) 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 FTCD4538E1PCM-4A?
The FTCD4538E1PCM-4A is specified for up to 2 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 FTCD4538E1PCM-4A?
Per the Finisar family datasheet, the FTCD4538E1PCM-4A transmits −2.4 to 4 dBm per lane and has a receiver sensitivity of −4.4 dBm OMAouter per lane. Maximum receiver input is 5.5 dBm damage threshold.
Does the FTCD4538E1PCM-4A 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 FTCD4538E1PCM-4A use?
The FTCD4538E1PCM-4A works at 1310nm EML x4 over Parallel SMF, MPO12. Both ends of a link must use the same optical standard.
Will the FTCD4538E1PCM-4A work in my Cisco, Juniper, Arista or HPE switch?
The FTCD4538E1PCM-4A follows the QSFP112 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.
FTCD4538E1PCM-4A vs FTCD4538E1PCM: what is the difference?
Both are in Finisar's FTCD4538 family. They differ in build / application (400G DR4+ (400G mode preset) vs 400G DR4+ (4x100G mode)). Pick the variant that matches your temperature, latch and wavelength needs.
What temperature range is the FTCD4538E1PCM-4A rated for?
The FTCD4538E1PCM-4A is a commercial-temperature part. Choose an industrial (T) variant for outdoor or uncontrolled sites.
What does the FTCD4538E1PCM-4A 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 FTCD4538E1PCM-4A 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 FTCD4538E1PCM-4A price in India and how do I order?
The Finisar FTCD4538E1PCM-4A 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 FTCD4538E1PCM-4A need?
It runs from 3.3 V (3.135–3.465 V) with power dissipation of < 8.5 W.
Documents
NextGen datasheetPDF · specs, FAQ & buying guideManufacturer datasheet
Finisar / Coherent family datasheet
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