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Finisar FTCD8618E1PCM 400GBASE-SR4 QSFP112 60 m OM3
400 Gb/s 400GBASE-SR4 QSFP112 transceiver, 850nm VCSEL x4, up to 60 m OM3 / 100 m OM4, commercial temperature.
- Manufacturer
- Coherent Corp. (formerly Finisar / II-VI)
- Mfr part number
- FTCD8618E1PCM
- Family
- FTCD8618
- Category
- Fiber optic transceiver modules
- Datasheet
- FTCD8618E1PCM datasheet (PDF)
FTCD8618E1PCM specifications
| Attribute | Value |
|---|---|
| Manufacturer | Coherent Corp. (Finisar) |
| Manufacturer part number | FTCD8618E1PCM |
| Product family | FTCD8618 |
| Form factor | QSFP112 |
| Standards / application | IEEE 802.3db 400GBASE-SR4 (VR4 / VR2 for VR variants); IEEE 802.3ck 400GAUI-4; QSFP112 MSA |
| Data rate | 425 Gb/s (4x 106.25 Gb/s, 53.125 GBd PAM4) |
| Wavelength | 840–868 nm (Tx) |
| Laser | 4x100Gb/s 850nm VCSEL-based transmitter |
| Receiver | PIN |
| Reach | 60 m OM3 / 100 m OM4 (SR4); 30 m OM3 / 50 m OM4 (-VR) |
| Connector | Single MPO12 APC |
| Tx output power | −4.6 to 4 dBm per lane |
| Rx sensitivity | −6.4 + TECQ dBm OMAouter (SR4); −4.4 dBm / −6.2 + TECQ dBm (VR) |
| Rx overload / max input | 5 dBm damage threshold |
| Extinction ratio | 2.5 dB min |
| Supply voltage | 3.3 V (3.135–3.465 V) |
| Power dissipation | < 8 W |
| Operating temperature | Commercial |
| Diagnostics | I2C management interface per QSFP112 MSA |
| Compliance | RoHS-6 |
| Lifecycle | Current production |
| Variant note | 400GBASE-SR4, 100 m OM4 |
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 FTCD8618E1PCM
The Finisar FTCD8618E1PCM (now a Coherent Corp. product, formerly II-VI) is a QSFP112 400GBASE-SR4 optical transceiver for 400 Gb/s links at 850nm VCSEL x4 over Parallel MMF, MPO12, with reach up to 60 m OM3 / 100 m OM4. It is a commercial-temperature part. It belongs to Finisar's FTCD8618 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
- Supports 425Gb/s aggregate bit rate
- Power dissipation < 8W
- Single 3.3V power supply
- Maximum link length of 100m on OM4 MMF
- 4x100Gb/s 850nm VCSEL-based transmitter
FTCD8618E1PCM: frequently asked questions
What is the Finisar FTCD8618E1PCM?
The FTCD8618E1PCM is a Finisar QSFP112 transceiver for 400GBASE-SR4 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 FTCD8618E1PCM?
The FTCD8618E1PCM is specified for up to 60 m OM3 / 100 m OM4 over Parallel MMF, 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 FTCD8618E1PCM?
Per the Finisar family datasheet, the FTCD8618E1PCM transmits −4.6 to 4 dBm per lane and has a receiver sensitivity of −6.4 + TECQ dBm OMAouter (SR4); −4.4 dBm / −6.2 + TECQ dBm (VR). Maximum receiver input is 5 dBm damage threshold.
Does the FTCD8618E1PCM support DDM / digital diagnostics?
Yes. I2C management interface per QSFP112 MSA. Your switch can read live temperature, voltage, laser bias and Tx/Rx power.
Which fiber and connector does the FTCD8618E1PCM use?
The FTCD8618E1PCM works at 850nm VCSEL x4 over Parallel MMF, MPO12. Both ends of a link must use the same optical standard.
Will the FTCD8618E1PCM work in my Cisco, Juniper, Arista or HPE switch?
The FTCD8618E1PCM 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.
FTCD8618E1PCM vs FTCD8618E1PCM-VR: what is the difference?
Both are in Finisar's FTCD8618 family. They differ in reach (60 m OM3 / 100 m OM4 vs 50 m OM4); build / application (400GBASE-SR4 vs 400GBASE-VR4). Pick the variant that matches your temperature, latch and wavelength needs.
What temperature range is the FTCD8618E1PCM rated for?
The FTCD8618E1PCM is a commercial-temperature part. Choose an industrial (T) variant for outdoor or uncontrolled sites.
What does the FTCD8618E1PCM 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 FTCD8618E1PCM 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 FTCD8618E1PCM price in India and how do I order?
The Finisar FTCD8618E1PCM 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 FTCD8618E1PCM need?
It runs from 3.3 V (3.135–3.465 V) with power dissipation of < 8 W.
Documents
NextGen datasheetPDF · specs, FAQ & buying guideManufacturer datasheet
Finisar / Coherent family datasheet
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