40G QSFP+ to 4 SFP+ Copper Breakout Cable

Technical Specification: 40 G QSFP+ to 4 × SFP+ Passive Copper Breakout Cable

Product Overview

A cost-effective, ultra-low-latency passive Twinax copper breakout cable with a single QSFP+ (Quad SFP+) connector on one end that splits into four individual SFP+ connectors on the other. Optimized for short-reach, high-density data center interconnects at 10 Gbps per lane using 40 Gbps QSFP+ ports.

Key Features

• Cable Type: Passive Twinax DAC (Direct Attach Cable) with breakout design
• Connector A: QSFP+ (SFF‑8436)
• Connector B: Four SFP+ (SFF‑8431)
• Data Rate: Up to 40 Gbps (aggregate) – 4 × 10 Gbps lanes
• Supported Protocols: 40GBASE‑CR4, 10G Ethernet, InfiniBand QDR, DDR, SDR, Fibre Channel
• Lengths Available: 0.5 m to 5 m (e.g., 0.5, 1, 2, 3, 5 m)
• Wire Gauge (AWG): 30 AWG for shorter lengths; 28 AWG or 26 AWG for longer runs
• Maximum Reach: Up to 5 m (passive)
• Power Consumption: Very low; around 0.02 W typical
• Minimum Bend Radius: Typically ~44 mm+ for composite cable assemblies
• Operating Temperature: 0 °C to 70 °C standard; industrial versions may support wider ranges.
• Performance Standards: Compliant with IEEE 802.3ba, QSFP+ MSA, SFP+ MSA, RoHS, CE.
• Digital Monitoring (DDM/DOM): Support varies by variant; some models support it.

Performance & Specifications

Applications

• High-density top-of-rack or intra-rack switches using QSFP+ ports
• Breakout for legacy 10G SFP+ ports on servers or switches
• Cost-conscious, low-latency 40G→4×10G deployments
• InfiniBand and Fibre Channel backward-compatible interconnects in clustered environments

Why Choose Swedish Telecom Opto?

✅ European-based support & logistics
✅ Full multi-vendor compatibility
✅ Extensive QA testing with performance reports
✅ Customized stock for projects and repeat supply
✅ 100% verified and coded
✅ Lower cost – no brand tax
✅ Trusted since 2004

Need a Quote or Sample?

This module is available in volume or with custom tuning.

👉 Request a quote or contact our optical team today:
📧 sales@swedishtelecomopto.com