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Arista Compatible 400GBASE-SR8 QSFP-DD PAM4 850nm 100m DOM MPO-16/APC MMF Optical Transceiver Module, Breakout to 2 × 200G-SR4 and 8 × 50G-SR
Arista Compatible 400GBASE-SR8 QSFP-DD PAM4 850nm 100m DOM MPO-16/APC MMF Optical Transceiver Module, Breakout to 2 × 200G-SR4 and 8 × 50G-SR
Arista Compatible 400GBASE-SR8 QSFP-DD PAM4 850nm 100m DOM MPO-16/APC MMF Optical Transceiver Module, Breakout to 2 × 200G-SR4 and 8 × 50G-SR
P/N: QDD-400G-SR8
US$189.00
12
Reviews
4
Questions
safeguard
4-Year Warranty
30-Day Returns
30-Day Exchange
（1000 In Stock）

Product Highlights

Built-in Inphi DSP Chip, Max. Power Consumption 10W
Tested in Targeted Switches for Superior Performance, Quality, and Reliability
Compliant with QSFP-DD MSA CMIS Rev4.0, OIF 56G PAM4
Hot Pluggable QSFP-DD Form Factor
High-speed Electrical Compliant to IEEE 802.3cd
8x 50G PAM4 Retimed 400GAUI-8 Electrical Interface
QSFP-DD Port is Backward Compatible with QSFP+, QSFP28 and QSFP56 Modules
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Specifications
Q&A
Reviews
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Arista Compatible 400GBASE-SR8 QSFP-DD PAM4 850nm 100m DOM MPO-16/APC MMF Optical Transceiver Module, Breakout to 2 × 200G-SR4 and 8 × 50G-SR
The 400GBASE-SR8 module, MTP/MPO-16 connector, up to 100m over parallel OM4 multi-mode fiber. It is compliant to IEEE 802.3bs protocol and 400GAUI-8/CEI-56G-VSR-PAM4 standard.
The 400 Gigabit Ethernet signal is carried over eight wavelengths. Multiplexing and demultiplexing of the eight wavelengths are managed within the device. And it can Support 2× 200G-SR4 and 8× 50G-SR.
Specifications
Part Number
QDD-400G-SR8
Vendor Name
AICPLIGHT
Form Factor
QSFP-DD
Max Data Rate
400Gbps
Wavelength
850nm
Max Cable Distance
70m@OM3/100m@OM4
Connector
MPO-16/APC
Media
MMF
Transmitter Type
VCSEL 850nm
Receiver Type
PIN
TX Power
-6~4dBm
Minimum Receiver Power
-7.9dBm
Power Budget
1.9dB
Receiver Overload
4dBm
Max Power Consumption
10W
Extinction Ratio
3dB
DDM/DOM
Supported
Commercial Temperature Range
0 to 70°C (32 to 158°F)
Modulation (Electrical)
8x50G-PAM4
Modulation (Optical)
8x50G-PAM4
CDR (Clock and Data Recovery)
TX & RX
Inbuilt FEC
No
Core Size
50/125µm
Packaging Technology
COB
Protocols
IEEE 802.3cd, QSFP-DD MSA, CMIS 4.0
Warranty
5 Years
Certification
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Questions & Answers
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All (4) Product (1)Installation (3)
Q:

Is polarity important during installation?

by h***m on 2025-07-08 16:07:39

A:

Yes, ensure Type A/B polarity matches across the link.

by Helpful on 2025-07-08 16:25:46

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comment icon Comment 0
Q:

Do I need transceiver cages?

by M***m on 2025-07-08 16:03:39

A:

Most switches have integrated cages, no additional cages needed.

by Helpful on 2025-07-08 16:27:31

like icon Helpful 0
comment icon Comment 0
Q:

How should cables be routed in a high-density rack?

by 6***m on 2025-07-08 15:53:30

A:

Use cable managers to maintain airflow and prevent bending.

by CPLIGHT on 2025-07-08 16:27:03

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comment icon Comment 0
Q:

Are these products RoHS compliant?

by R***m on 2025-07-08 14:24:35

A:

Yes, all our products comply with RoHS environmental standards.

by Helpful on 2025-07-08 15:56:57

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Customer Reviews
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All (12) Performance (3)Compatibility (2)Ease of Use (4)Customer Support (3)
f
f***m
2025-07-02 16:41:08
Confirmed Purchase
5.0

The pre-sales consultation was detailed and tailored to our specific data center needs. Very professional experience.

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comment icon Comment 0
L
L***m
2025-06-30 05:06:02
Confirmed Purchase
5.0

These Ethernet modules run flawlessly under sustained 800G load, with consistent throughput and thermal stability.

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comment icon Comment 0
J
J***m
2025-06-25 13:19:48
Confirmed Purchase
5.0

The latch design makes removal and re-insertion quick even in tight spaces.

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n
n***m
2025-06-15 23:15:11
Confirmed Purchase
5.0

These modules were pre-programmed and ready to install out of the box—zero configuration needed.

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comment icon Comment 0
X
X***m
2025-06-10 16:23:59
Confirmed Purchase
5.0

Recognized immediately by our monitoring system—no configuration needed.

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2
2***m
2025-06-07 09:19:16
Confirmed Purchase
5.0

These modules were pre-programmed and ready to install out of the box—zero configuration needed.

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comment icon Comment 0
F
F***m
2025-05-21 02:51:53
Confirmed Purchase
5.0

The signal quality remains intact even at extended range over single-mode fiber.

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1
1***m
2025-04-22 04:57:55
Confirmed Purchase
5.0

Fully interoperable with Arista, Dell, and white-box switches in our lab.

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J
J***m
2025-04-17 09:30:39
Confirmed Purchase
5.0

Ideal for large-scale cloud and DCI applications—maintains excellent performance across long-haul distances.

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f
f***m
2025-04-15 21:06:00
Confirmed Purchase
5.0

The plug-and-play functionality helped speed up our Ethernet DCI rollout significantly.

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comment icon Comment 0
m
m***m
2025-04-15 06:20:24
Confirmed Purchase
5.0

Technical support provided clear guidance on 800G-to-2x400G breakouts for our aggregation layer.

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comment icon Comment 0
l
l***m
2025-04-07 13:38:17
Confirmed Purchase
5.0

After deployment, support followed up to ensure the modules had passed our internal benchmarks.

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