400G OSFP SR4 FL Optical Transceiver

Designed for InfiniBand HDR fabrics, HPC clusters and AI computing networks, the 400G OSFP SR4 FL Optical Transceiver provides 425Gbps (4x106.25Gbps) throughput in a Single-port OSFP RHS/Flat Top form factor. It operates at 850nm over MMF through a MPO-12/APC connector and supports link lengths up to 30m@OM3/50m@OM4 or OM5. The module meets 400G InfiniBand NDR, OSFP MSA Rev 5.0、IEEE 802.3ck、IEEE 802.3-2022 and includes digital diagnostic monitoring for live status readout.

Product Highlights

Single-port OSFP RHS/Flat Top form factor, 425Gbps (4x106.25Gbps) data rate
Wavelength: 850nm
Connector: MPO-12/APC
Reach: up to 30m@OM3/50m@OM4 or OM5
Fiber media: MMF
DDM/DOM: Supported

Specifications

NVIDIA/Mellanox InfiniBand Compatible	MMA4Z00-NS400
Manufacturer	HT
Form Factor	Single-port OSFP RHS/Flat Top
Max. Data Rate	425Gbps (4x106.25Gbps)
Wavelength	850nm
Max. Cable Distance	30m@OM3/50m@OM4 or OM5
Connector	MPO-12/APC
Media	MMF
Transmitter Type	VCSEL
Receiver Type	PIN
TX Power	-4.6~4dBm
Minimum Receiver Power	-6.3dBm
Power Budget	1.7dB
Receiver Overload	4.0dBm
Max. Power Consumption	8.5W
Extinction Ratio	2.5dB
DDM/DOM	Supported
Commercial Temperature Range	0 to 70°C (32 to 158°F)
Modulation (Electrical)	4x100G-PAM4
Modulation (Optical)	4x100G-PAM4
CDR (Clock and Data Recovery)	TX and RX Built-in CDR
Inbuilt FEC	Yes
Core Size	50/125µm
Packaging Technology	COB
MTBF	7210148 Hours (@40°C, 60% CL) 3580900 Hours (@40°C, 90% CL) 5016607 Hours (@50°C, 60% CL) 2384800 Hours (@50°C, 90% CL) 2323762 Hours (@70°C, 60% CL) 1042265 Hours (@70°C, 90% CL)
Application	400G InfiniBand
Protocols	400G InfiniBand NDR, OSFP MSA Rev 5.0、IEEE 802.3ck、IEEE 802.3-2022

Applications

In InfiniBand HDR fabrics, HPC clusters and AI computing networks, the 400G OSFP SR4 FL Optical Transceiver delivers 425Gbps (4x106.25Gbps) transmission over MMF with a reach of 30m@OM3/50m@OM4 or OM5. With its MPO-12/APC optical interface, the module works directly with the MMF infrastructure already installed in most facilities. It is interoperable with NVIDIA/Mellanox InfiniBand platforms and replaces the NVIDIA/Mellanox InfiniBand part MMA4Z00-NS400 directly.

Standards and Compatibility

Compliance: 400G InfiniBand NDR, OSFP MSA Rev 5.0、IEEE 802.3ck、IEEE 802.3-2022. For projects standardized on NVIDIA/Mellanox InfiniBand hardware, this product replaces the MMA4Z00-NS400 directly, with identical fit and function. Every unit's EEPROM coding and link behavior are verified on real host equipment in our lab, so what arrives at your site is ready to use.

Ordering Information

To order, quote OSFP-SR4-400G-FL together with your quantity. Stock items ship quickly; for OEM orders we support custom labels, retail packing and vendor-specific coding, all handled in our own factory.

Quality Assurance

Before any product leaves our factory it goes through optical performance testing, compatibility verification on real switch platforms and a final visual inspection. Our in-house test lab holds a wide range of current and legacy switches from major brands, so interoperability is proven on the actual equipment your network uses rather than assumed from paper specifications.

Packing Details

Standard packing is an anti-static bag plus blister protection, with cartons sized to keep products from moving in transit. We apply our standard labels by default; neutral packing or customer-branded labels, part number stickers and serial barcodes are all available on request.

Factory Custom Capability

Working directly with the manufacturer means no middleman limits. We support OEM and ODM projects, custom cable assemblies, alternative packaging and compatibility coding for major equipment vendors, with engineering support from the same team that designs our standard products.

How We Ship

Most orders travel by international express and arrive within days; palletized freight by air or sea is used for volume orders. If you prefer, we ship on your DHL, UPS or FedEx account, or deliver to your appointed agent in China for onward consolidation.