NVIDIA/Mellanox MMA1L10-CR Compatible 100G QSFP28 LR4 Optical Transceiver – 10km, SMF, 1310nm, LC, DOM
The MMA1L10-CR compatible QSFP28 optical transceiver is a high-performance, 100G LR4 module designed for long-reach Ethernet and InfiniBand EDR applications. Supporting transmission distances up to 10 kilometers over single-mode fiber (SMF), this pluggable transceiver uses a 1310nm LAN-WDM laser across four channels to deliver a total line rate of 100Gbps.
It converts four lanes of 25Gb/s electrical signals into four wavelengths of optical signals, multiplexed into a single fiber, and complies with IEEE 802.3 100GBASE-LR4, SFF-8661, SFF-8636, and QSFP28 MSA standards. Integrated Digital Optical Monitoring (DOM) provides real-time diagnostics via the I²C interface.

Fully qualified for InfiniBand EDR end-to-end systems, this module is ideal for supercomputing, HPC clusters, GPU fabrics, and data center backbones, and is widely used with SB7800 series switches and ConnectX-5 network adapters..

Technical Specifications – NVIDIA/Mellanox MMA1L10-CR Compatible 100G QSFP28 LR4 Transceiver
• Form Factor: QSFP28
• Maximum Data Rate: 103.125Gbps (4 × 25.78Gbps)
• Wavelength: 1310nm (LAN-WDM)
• Maximum Cable Distance: 10km (SMF)
• Connector: Duplex LC/UPC
• Fiber Type: Single-Mode Fiber (SMF)
• Transmitter Type: LAN-WDM EML (Electro-absorption Modulated Laser)
• Receiver Type: PIN photodiode

Optical Performance
• Transmit Power (TX): -4.3 to 4.5dBm
• Receiver Sensitivity (Min): < -10.6dBm
• Power Budget: 6.3dB
• Receiver Overload: 4.5dBm
• Extinction Ratio: > 4dB

General Features
• Power Consumption: = 3.5W
• DDM/DOM: Supported (Digital Diagnostics Monitoring)
• Operating Temperature: 0°C to 70°C
• Electrical Modulation: 4 × 25Gbps NRZ
• Optical Modulation: 4 × 25Gbps NRZ