
This NVIDIA/Mellanox MMA2P00-AS compatible transceiver provides 25G connectivity in a hot-swappable SFP28 package. Its optical design operates at 850nm for up to 100m on OM4 / 70m on OM3 at 25G100m on OM3 at 10G, using Duplex LC. Complete parameters and related OEM references help installers plan a serviceable optical connection at the equipment rack.
OEM Part Number: MMA2P00-ASHT Part Number: SFP-25GMSR-85
| 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 |
Plan the fiber route before removing connector protection. The patch lead should follow its manager without pulling on the transceiver, while leaving space to release the latch and service adjacent ports. Protect the end face until final connection and avoid tight bends immediately behind warm exhaust air. 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.
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.
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.
Quality control covers the optical or electrical interface, host identification and operating link. The verified unit is then individually protected and cartoned. Customer references, rack groups and project packing lists can be added for volume orders.
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.
No. It is an HT-manufactured compatible alternative for equipment that specifies MMA2P00-AS, not an original NVIDIA/Mellanox-branded module.
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.
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.
Use MMA2P00-AS as the compatibility cross-reference and SFP-25GMSR-85 as the HT ordering identity. Keep other reaches or wavelength directions on separate order lines. Neutral labels, customer packaging and project-specific compatibility review are available on request.
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.
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