NVIDIA/Mellanox MMA2P00-AS Compatible 25G SFP28 SR Transceiver Module 100m on OM4 / 70m on OM3 at 25G100m on OM3 at 10G

Built for hosts recognizing MMA2P00-AS, this HT-manufactured SFP28 module delivers 25G transmission at 850nm. Its rated reach is 100m on OM4 / 70m on OM3 at 25G100m on OM3 at 10G, with Duplex LC as the physical interface. The specifications and engineering guidance below support data-center designers evaluate optical reach, rack integration and host compatibility together, while keeping HT manufacture separate from the OEM cross-reference.

OEM Part Number: MMA2P00-ASHT Part Number: SFP-25GMSR-85

Product Highlights

Compatible alternative to NVIDIA/Mellanox MMA2P00-AS
25G connectivity at Dual Rate 10Gbps and 25.78Gbps
Optical wavelength: 850nm
Specified reach: 100m on OM4 / 70m on OM3 at 25G100m on OM3 at 10G
Duplex LC / MMF interface
Digital diagnostic monitoring: Supported
Operating temperature: 0 to 70°C (32 to 158°F)

Specifications

Mellanox Compatible	MMA2P00-AS
Manufacturer	HT
HT Part Number	SFP-25GMSR-85
Form Factor	SFP28
Max Data Rate	Dual Rate 10Gbps and 25.78Gbps
Wavelength	850nm
Max Cable Distance	100m@OM4/70m@OM3 at 25G100m@OM3 at 10G
Connector	Duplex LC
Media	MMF
Transmitter Type	VCSEL
Receiver Type	PIN
TX Power	-8.4~2.4dBm
Minimum Receiver Power	＜-10dBm
Power Budget	1.6dB
Receiver Overload	2.4dBm
Power Consumption	≤1W
Extinction Ratio	2dB
CDR	TX & RX Built-in CDR
Inbuilt FEC	No
Commercial Temperature Range	0 to 70°C (32 to 158°F)
Protocols	IEEE 802.3by, SFP28 MSA, SFF-8472, SFF-8431, CPRI, eCPRI
Core Size	50/125 µm
Packaging Technology	COB Packaging
DDM/DOM	Supported

Applications and Optical Link Design

Typical deployments include switch-to-switch, switch-to-server and aggregation links inside a data hall or between adjacent equipment rooms. The Duplex LC interface connects to the specified multimode cabling, and the stated reach depends on fiber grade and link loss. Keep this interface on the matching multimode optical standard rather than connecting it directly to a single-mode wavelength or reach variant.

Before deployment, check the host port type, supported data rate and firmware requirements. The 25G interface configuration must match the remote equipment; sharing a SFP28 housing alone does not make two transceiver types interoperable.

The multimode channel should use the fiber grade associated with the stated 100m on OM4 / 70m on OM3 at 25G100m on OM3 at 10G reach. Keep the Duplex LC end faces clean and avoid tight bends. Different multimode standards are not interchangeable merely because they share a connector.

Quality Assurance and Packaging

Each MMA2P00-AS compatible module is inspected, powered up and functionally checked before protective packing. Dust caps and individual trays shield the interface during transport. Customer references, rack groups and project packing lists can be added for volume orders.

Optical Acceptance, Diagnostics and Handling

For this model, the specified transmit-power range is -8.4~2.4dBm; the stated optical power budget is 1.6dB. During commissioning, record the host diagnostic readings after the link has stabilized and compare them with those limits. DOM values are useful operational indicators, but they do not replace calibrated optical measurements when a link is marginal. Investigate unexpected loss through connector inspection, cleaning and a channel measurement before replacing the module. Diagnostic monitoring is listed as Supported. Before every insertion, keep dust caps in place until the patch lead is ready, avoid touching the optical end face and use an appropriate inspection and cleaning procedure. Do not look into an active optical interface.

Data-Center Optical Design and Airflow

Select the module by optical standard, reach and rack layout. Check the complete fiber channel, including panels and connectors, and keep dense bundles from blocking front-panel airflow. Account for listed power consumption and preserve enough space to remove a module without disturbing adjacent links. For this model, the principal parameters are data rate Dual Rate 10Gbps and 25.78Gbps, wavelength 850nm, rated reach 100m on OM4 / 70m on OM3 at 25G100m on OM3 at 10G.

Ordering Information

Quote HT part number SFP-25GMSR-85 together with OEM reference MMA2P00-AS and quantity. Add the host model and software release when pre-order verification is required. Neutral labels, customer packaging and project-specific compatibility review are available on request.

NVIDIA/Mellanox Compatibility and Factory Testing

Factory verification starts with the expected MMA2P00-AS identity and finishes with an operating host link. EEPROM data, diagnostic visibility and the stated optical parameters are assessed together. Equipment model, hardware revision and software release can be reviewed before dispatch where platform behavior is uncertain.

Frequently Asked Questions

Is this an original NVIDIA/Mellanox transceiver?

No. It is an HT-manufactured compatible alternative for equipment that specifies MMA2P00-AS, not an original NVIDIA/Mellanox-branded module.

Which fiber and connector are required?

Use Duplex LC with MMF. The specified maximum reach is 100m on OM4 / 70m on OM3 at 25G100m on OM3 at 10G, subject to fiber quality and total link loss.

Can it be mixed with another wavelength or reach version?

Only when the two ends share the same optical standard, wavelength plan and supported data rate. Check the exact part numbers and link budget rather than relying only on the module form factor.

Shipping and Lead Time

Standard configurations normally ship within one to three working days, with production lead times confirmed for larger quantities. International courier, air freight and sea freight are available; customer courier accounts and nominated forwarders are accepted.