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Mellanox MMA2P00-AS / MMA2P00-ASHT 25GbE SR SFP28 Optical Transceiver |850nm MMF
Product Details:
| Brand Name: | Mellanox |
| Model Number: | MMA2P00-AS |
| Document: | MMA2P00-AS.pdf |
Payment & Shipping Terms:
| Minimum Order Quantity: | 1pcs |
|---|---|
| Price: | Negotiate |
| Packaging Details: | outer box |
| Delivery Time: | Based on inventory |
| Payment Terms: | T/T |
| Supply Ability: | Supply by project/batch |
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Detail Information |
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| Condition: | New And Original | Availability: | Stock |
|---|---|---|---|
| Technology: | Ethernet | Max Speed: | 25GbE |
| Connector Type: | SFP28 | Transceiver Reach: | Up To 100m |
| Highlight: | Mellanox 25GbE SR SFP28 transceiver,850nm MMF optical transceiver,Mellanox MMA2P00-ASHT transceiver with warranty |
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Product Description
Mellanox MMA2P00-AS / MMA2P00-ASHT 25GbE SR SFP28 Optical Transceiver
High-performance 850nm multimode SFP28 for 25GbE & 10GbE Ethernet, featuring selectable retiming, extended temperature options (up to 85°C), and IEEE compliance.
Product Overview
The MMA2P00-AS and MMA2P00-ASHT are pluggable SFP28 optical transceivers from Mellanox® designed for high-speed 25GbE connectivity. They leverage advanced integrated circuit technology to deliver exceptional signal integrity at low power consumption. Operating at a nominal wavelength of 850nm over dual multimode fibers, these modules are fully compliant with SFF-8402 and IEEE 802.3bm specifications. The optical interface uses standard LC duplex connectors, supporting data rates up to 25.78125 GBd. With selectable retiming on both transmitter and receiver, they offer flexibility for 25G retimed or 10G non‑retimed operation. Rigorous production testing ensures reliable out‑of‑box performance.
Key Features
- Selectable retiming for both transmitter and receiver paths (on/off via register)
- Programmable Rx output amplitude and pre‑emphasis for signal optimization
- Programmable Tx input equalizer and input squelch function
- Compliant with SFF-8402, SFF-8472, IEEE 802.3 25GBASE‑SR and 10GBASE‑SR
- 3.3V power supply with SFP28 Power Level 1 (1.5W max) – actual dissipation as low as 0.45W
- Bit Error Rate (BER) better than 1E‑15
- Extended operating case temperature: 0°C to 85°C (MMA2P00-ASHT) with internal DDM readout up to 90°C
- Class 1 laser safety (IEC/EN 60825-1 compliant)
- Hot‑pluggable SFP28 form factor
- RoHS compliant (lead‑free)
Technology & Integration
Mellanox’s integrated circuit technology enables low power and high performance inside the SFP28 package. The module includes a VCSEL array (850nm) and a PIN receiver paired with a DSP-based retiming function. The retiming can be selectively enabled for 25G operation or bypassed for 10G backward compatibility. Digital Diagnostics (DDM) per SFF-8472 provides real‑time monitoring of temperature, voltage, laser bias, and optical power. The programmable Tx equalizer compensates for host board losses, while the Rx emphasis adjusts to varying link conditions, ensuring robust eye openings even over long multimode fibers.
Typical Deployments
- Data Center Interconnects: 25GbE links between servers, switches, and storage within racks or across adjacent racks (up to 100m on OM4).
- 10GbE Legacy Integration: Automatic rate fallback (by disabling retiming) for 10GBASE‑SR connections, protecting existing investments.
- Enterprise Core/Aggregation: High‑density SFP28 ports in top‑of‑rack switches connecting to 25G capable NICs.
- High‑Performance Computing (HPC): Low latency and low BER for cluster interconnects.
Compatibility & Interoperability
| System / Standard | Compliance / Notes |
|---|---|
| IEEE 802.3 25GBASE‑SR | Full compliance (with retiming enabled) |
| IEEE 802.3 10GBASE‑SR | Full compliance (retiming disabled) |
| SFF-8402 / SFF-8472 | Mechanical and management interface |
| Mellanox Switches & Adapters | Tested with Spectrum switches, ConnectX‑4/5/6 NICs |
| Broadcom / Cisco / Arista 25G platforms | Vendor‑certified design; interoperability expected but confirm per platform |
Technical Specifications
| Parameter | Value / Range |
|---|---|
| Supply Voltage | 3.135 V – 3.465 V (3.3V nominal) |
| Power Dissipation (no retiming) | 0.45 W typ, 0.5 W max |
| Power Dissipation (retiming) | 0.7 W typ, 0.8 W max |
| Data Rate (optical) | up to 25.78125 GBd (NRZ) |
| Wavelength | 840 – 860 nm (nominal 850nm) |
| Maximum Reach (25GbE) | 70m on OM3, 100m on OM4 |
| Maximum Reach (10GbE) | 100m on OM3 (300m typical at 10G) |
| Damage Threshold (average) | 3.4 dBm (max) – Not publicly specified |
| Operating Case Temp (MMA2P00-AS) | 0 °C to 70 °C (internal DDM up to 75°C) |
| Operating Case Temp (MMA2P00-ASHT) | 0 °C to 85 °C (internal DDM up to 90°C) |
| Storage Temperature | -40 °C to 85 °C |
| Relative Humidity (operating) | 5% – 85% (non‑condensing) |
| BER | < 1E-15 |
| Connector / Fiber Type | Dual LC / Multimode (OM3/OM4) |
Selection Guide: MMA2P00-AS vs MMA2P00-ASHT
| Part Number | Operating Temp | DDM Readout | Best For |
|---|---|---|---|
| MMA2P00-AS | 0°C to 70°C | Up to 75°C internal | Standard data center / enterprise environments |
| MMA2P00-ASHT | 0°C to 85°C | Up to 90°C internal | Outdoor, industrial, or high‑temp zones |
Both support identical optical and electrical characteristics; choose HT variant for extended case temperature requirements.
Advantages & Business Value
- Power efficiency: As low as 0.45W reduces thermal load in high‑density deployments.
- Future‑ready & backward compatible: Single SKU covers both 25G and 10G infrastructure.
- Extended temperature range (HT): Enables deployment in non‑controlled environments without extra cooling.
- Mellanox quality: Rigorous production testing ensures lowest field failure rates.
- Vendor‑certified: Engineered and tested by Mellanox, guaranteeing interoperability with Mellanox systems and reduced compatibility risk.
Service & Warranty Information
Mellanox LinkX optical transceivers include a 1‑year limited hardware warranty covering parts repair or replacement. Technical support is available through Mellanox’s global partners. For advanced replacement options or extended support, please contact your sales representative.
All modules are RoHS compliant and meet Class 1 laser safety requirements.
Buyer Checklist
- Verify your switch/router supports SFP28 (25G) or SFP+ (10G) ports.
- Choose MMA2P00-ASHT if ambient temperature may exceed 70°C.
- Ensure multimode fiber type (OM3/OM4) and distance (≤100m) meet your link budget.
- Confirm retiming setting according to your host’s requirements (register control).
- For large deployments, request interoperability test results with non‑Mellanox equipment.
Frequently Asked Questions
A: Yes. With retiming disabled (via register or automatic negotiation), it operates as a 10GBASE‑SR module. Confirm host support for 10G SFP+.
A: The ASHT version is qualified for 85°C operating case temperature (vs. 70°C) and allows internal DDM readings up to 90°C.
A: Not recommended. It is optimized for OM3/OM4. Reach on OM2 is not specified and may be limited.
A: Yes, it is factory‑programmed with Mellanox data, ensuring correct identification in Mellanox hosts. Third‑party platforms may require custom coding – please verify.
Precautions & Handling
- ESD sensitive – use proper grounding when handling.
- Avoid looking into the optical ports with magnification when module is powered.
- Do not exceed absolute maximum ratings (supply voltage, damage threshold).
- Clean optical connectors before mating; inspect for contamination.
- Ensure host device provides adequate ventilation, especially in HT environments.
Hong Kong Starsurge Group Co., Limited is a technology-driven provider of network hardware, IT services, and system integration solutions. Founded in 2008, the company serves customers worldwide with products including network switches, NICs, wireless access points, controllers, cables, and related networking equipment. Backed by an experienced sales and technical team, Starsurge supports industries such as government, healthcare, manufacturing, education, finance, and enterprise. The company also offers IoT solutions, network management systems, custom software development, multilingual support, and global delivery. With a customer-first approach, Starsurge focuses on reliable quality, responsive service, and tailored solutions that help clients build efficient, scalable, and dependable network infrastructure.