100G QSFP28 to 2×50G QSFP28 Passive DAC Breakout Cable: 100G-PDAC-QSFP-2QSFP28

Our EDGEOPTIC 100G-PDAC-QSFP-2QSFP28 is a multi-vendor compatible 100G QSFP28 to 2×QSFP28 passive direct attach copper breakout cable designed for flexible high-bandwidth connectivity in modern data center environments. The 100G-PDAC-QSFP-2QSFP28 cable features a 1-to-2 breakout configuration with one QSFP28 connector splitting into two independent QSFP28 connectors, enabling efficient port utilization by connecting a single 100G switch port to two separate 50G devices or aggregation points.

The cable supports multi-rate operation from 44.8 to 100.125 Gbps, accommodating various network protocols and flexible deployment scenarios. For Ethernet deployments, the cable handles 100G Ethernet at 103.125 Gbps aggregate throughput, 40G Ethernet at 41.25 Gbps, and 10G Ethernet at 10.31 Gbps, providing exceptional versatility for mixed-speed network environments. The comprehensive InfiniBand support spans multiple generations including SDR at 10 Gbps, DDR at 20 Gbps, QDR at 40 Gbps, FDR at 56 Gbps, and EDR at 100 Gbps, making this breakout cable ideal for high-performance computing environments with diverse interconnect requirements.

As a passive DAC solution, the 100G-PDAC-QSFP-2QSFP28 requires no external power and introduces zero latency to signal transmission, making it ideal for latency-sensitive HPC and financial trading applications. The cable construction utilizes high-quality AWG30 twinax copper for all lengths from 1 to 3 meters, ensuring optimal signal integrity while maintaining cable flexibility for practical installation in high-density environments.

The 1-to-2 breakout configuration is particularly valuable for network architectures where 50G connectivity is required or where infrastructure consolidation is desired. This approach enables efficient use of 100G switch ports by connecting to two 50G endpoints through a single high-density port, reducing overall switch port requirements and associated costs. The design also supports InfiniBand environments where connecting multiple HCAs or switches through a single uplink port improves fabric efficiency.

The electrical interface conforms to QSFP28 MSA, SFF-8402, and SFF-8665 specifications, ensuring broad compatibility with standard QSFP28 host systems from multiple equipment vendors. Our breakout DAC cables can be encoded for compatibility with over 80 different equipment brands. The cable incorporates DDM/DOM (Digital Diagnostic Monitoring) functionality, providing real-time diagnostic data through the MSA-compatible interface.

Standards compliance includes IEEE 802.3cd for next-generation Ethernet applications. The cable operates within a 0 to 70°C temperature range with an MTBF rating of 1,000,000 hours, delivering long-term reliability for mission-critical infrastructure.

Our 100G QSFP28 to 2×QSFP28 passive breakout DAC is CE/RoHS certified and compliant with product safety standards. Because our focus is providing top quality service, we perform comprehensive quality checks before delivery including electrical parameter measurements, connector inspection tests, and EEPROM memory data validation tests.