Samtec ExaMAX® High-Speed Backplane System

Samtec ExaMAX® High-Speed Backplane System offers design flexibility to fit a variety of applications, including Flyover® cables supporting 112Gbps PAM4 and board-to-board connectors supporting 56Gbps PAM4. ExaMAX Backplane Systems are suitably designed for various industries, including 5G networking, medical, automotive, instrumentation, military/aerospace, and AI/machine learning.

56Gbps PAM4 Interconnects

The Samtec ExaMAX contact system achieves two reliable points of contact at all times and minimizes residual stub for improved signal integrity performance, while additionally providing low mating force and excellent contact normal force. Improved crosstalk is achieved due to the signal wafers incorporating a one-piece, embossed ground structure.

112Gbps PAM4 Cable Assemblies

ExaMAX backplane cable assemblies improve routability and signal integrity using Flyover technology, which routes the signal above a lossy PCB using co-extruded, ultra-low skew Twinax for improved reach and bandwidth. The direct solder-attach-to-contacts design optimizes the signal path, further enhancing performance.


  • ExaMAX High-Speed Backplane System
    • Meets a variety of industry specifications
    • Exceeds OIF CEI-28G-LR specification for 28Gbps standards
    • 24 to 72 pair designs (4 and 6 pairs; 6, 8, 10, and 12 columns)
    • Wafer design increases isolation for reduced crosstalk
    • Press-fit tails provide a reliable electrical connection
  • ExaMAX High-Speed Backplane Cable Assemblies
    • 34AWG and 30AWG Eye Speed® Ultra Low Skew Twinax Cable
      • Improved signal integrity, increased flexibility, and routability
    • Highly customizable with modular flexibility
    • Reduce costs due to lower layer counts
    • Multiple end options available
    • 2.00mm (.0787") pitch
    • 56Gbps PAM4 performance
    • Available in pairs
      • 4 pair: 6, 8, or 10 columns
      • 6 pair: 6, 8, 10, or 12 columns
    • Perpendicular or coplanar configurations
  • EBCM
    • 112Gbps PAM4 performance
    • 34AWG to 30AWG Twinax cable
    • Increased isolation for reduced crosstalk
    • Available in 4 or 6 pair (4, 6, 8, 10, 12, 14, or 16 columns)
    • Vertical or right-angle configurations
    • Intermateable with all ExaMAX connectors
  • EBCL
    • Vertical latching shroud
    • Provides retention for EBCF-VT to EBTM-VT
    • Surrounds and protects EBTM-VT
    • Screw mounts secure the EBCL to the board (M2 thread)
  • EBCB
    • Panel retention bracket
    • Provides retention for EBCM
    • Screw mounts secure the EBCB to the backplane


  • 5G networking
  • Industrial
  • Military/aerospace
  • Test connectivity
  • Medical
  • Broadcast video
  • Automotive
  • AI/machine learning
  • Instrumentation


  • 2.00mm pitch
  • 4.2A current rating per pin
  • Copper alloy contact material
  • EBCM series mates with EBCF, EBTF, and EBCB
  • EBCF series mates with EBCM, EBTM, and EBCL
  • -55°C to +105°C operating temperature range
Published: 2022-10-12 | Updated: 2023-09-11