What is the modulation method of the 800G Twin-Port NDR 2xSR4 optical module?

8 channels of 100G-PAM4 electrical modulation, Two ports of 4-channel 100G-PAM4 optical modulation.

What is the transmission distance of the 800G Twin-Port NDR 2xSR4 optical module?

With the OM3 patch cable, the transmission distance is 30m, with the OM4 patch cable, the transmission distance is up to 50m.

800GBASE-SR8 OSFP 850nm 50m MMF InfiniBand NDR Module for Mellanox(Flat Top)

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NVIDIA/Mellanox MMA4Z00-NS-FLT Broadcom VCSEL Compatible 800G 2xSR4/SR8 OSFP PAM4 850nm 50m DOM Two MPO-12/APC InfiniBand NDR Transceiver Module for MMF (Flat Top DGX H100)

Name: NVIDIA/Mellanox MMA4Z00-NS-FLT Broadcom VCSEL Compatible 800G 2xSR4/SR8 OSFP PAM4 850nm 50m DOM Two MPO-12/APC InfiniBand NDR Transceiver Module for MMF (Flat Top DGX H100)
Brand: Naddod
SKU: 101942
Price: 1168.00 USD
Availability: OnlineOnly
Rating: 5.0 (18 reviews)

#101942

Model: OSFP-800G-2SR4FH | SKU: 980-9I51A-00NS00

Sold: 333

In Stock: 2

$ 1168.00

Transceiver Types:

800G SR8｜MMA4Z00-NS

800G SR8｜MMA4Z00-NS-FLT

800G FR8｜MMS4X50-NM

800G DR8｜MMS4X00-NM

800G DR8｜MMS4X00-NS

400G SR4｜MMA4Z00-NS400

400G DR4｜MMS4X00-NS400

400G SR4｜MMA1Z00-NS400

800G SR8｜MMA4Z00-NS

800G SR8｜MMA4Z00-NS-FLT

800G FR8｜MMS4X50-NM

800G DR8｜MMS4X00-NM

800G DR8｜MMS4X00-NS

400G SR4｜MMA4Z00-NS400

400G DR4｜MMS4X00-NS400

400G SR4｜MMA1Z00-NS400

Brand:

NADDOD (InfiniBand)

Item Spotlights

Tested for compatibility with multiple firmware versions, compliant with IBTA Industrial BER standards.
Free test environments and samples are available to experience high-quality product performance.
Complies with OSFP and RoHS protocols, providing a reliable and sustainable solution.
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NVIDIA/Mellanox MMA4Z00-NS-FLT Broadcom VCSEL Compatible 800G 2xSR4/SR8 OSFP PAM4 850nm 50m DOM Two MPO-12/APC InfiniBand NDR Transceiver Module for MMF (Flat Top DGX H100)

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Specifications

Applications

Questions & Answers

Customer Reviews

Resources

Specifications

Applications

Questions & Answers

Customer Reviews

Resources

Description

NVIDIA/Mellanox® MMA4Z00-NS-FLT Broadcom VCSEL Compatible 800G 2xSR4/SR8 InfiniBand NDR Optical Transceiver Module(Twin-port OSFP, 850nm, 30m (OM3) /50m (OM4), Two MPO-12/APC, DOM, for MMF, Flat Top)

NADDOD OSFP-800G-2SR4FH is an InfiniBand and Ethernet 800Gb/s 2x400Gb/s Twin-port OSFP, 2xSR4/SR8 multimode, parallel, 8-channel transceiver using two, 4-channel MPO-12/APC optical connectors at 400Gb/s each. The parallel multimode, short reach 8-channel (2xSR4/SR8) uses 100G-PAM4 modulation and has a maximum fiber reach of 50-meters using 8 multimode fibers. The Quantum-2 and Spectrum-4 switches require finned-top OSFP shells for extra transceiver cooling. A flat-top version offered for liquid-cooled and DGX H100 Cedar7 systems links.

Specifications

Form Factor

Twin-port OSFP

Distance

30m (OM3) /50m (OM4)

Wavelength

850nm

Connector

Two MPO-12/APC

Power Consumption

≤14W

Transmitter

VCSEL

Receiver

Media

MMF

Modulation（electrical ）

8x106.25Gb/s PAM4

Modulation（Optical ）

Two ports 4x106.25Gb/s PAM4

Case Temperature(℃)

0 to 70°C (32 to 158°F)

Protocol

IB NDR, 800G Ethernet Compliant

Applications

Questions & Answers

Ask a Question

What is the difference between Flat top and Finned-top OSFP 800G 2xSR4 optical modules?

The "Flat Top" 800G OSFP module is mainly used in the DGX H100's 800G Twin-port OSFP cages, which have internal heat sinks mounted on top of the cages, thus requiring the use of a flat-top optical module in the DGX H100; the "Finned Top" optical module form factor utilizes the top of the component design with heat sink fins The "Finned Top" optical module form factor utilizes a module top design with heat sink fins to increase heat dissipation and improve module performance and reliability in high-temperature environments, and is typically used in Quantum-2 air-cooled switches for additional cooling due to the reduced airflow inlet in the switch.

What kind of optical fiber do I need to use with the 800G Twin-Port NDR 2xSR4 optical module?

When the connection rate of both devices is 2x400G-2x400G, it is paired with two OM4 MPO-12/APC patch cords, and the corresponding NADDOD model is M4MPOA12FB. When the connection rate of both devices is 2x400G-4x200G, it is paired with two multimode OM4 MPO-2xMPO-4/APC patch cords, and the corresponding NADDOD model is M4MPOA2x4F.

Why is the polished type of multimode patch cable used in the NDR module MPO/APC (Angled Polished Connector)?

100G-PAM4 optoelectronic devices are very sensitive to reflections occurring within the fiber, about 10% of the light is reflected to the transmitter as it passes through the optical connector, distorting the data signal, APC's optical connector deflects this reflected light.

Customer Reviews

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u***a
Verified Purchase
u***a
Verified Purchase
5.0
We bought the 800G modules in two different form factors, Flat Top and Finned Top, and both are great and work well with the DGX platform and the QM9700 switches.
Helpful (7)Comments

Resources

OSFP-800G-2SR4FH Datasheet

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