Marvell and Samtec Offer Joint Solution for Next-Gen 100T Network Switching Topology

Samtec recently presented a ground-breaking next-gen 100T network switching topology at OFC 2025, incorporating Samtec co-packaged connectivity at the substrate level. This was presented in conjunction with our network switching partners at Marvell.

In the video above, Samtec’s Jignesh Shah walks you through the demo and explains the capabilities and technologies.

We are showing a physical demonstration of a 100T network switching ASIC with co-packaged copper. Four copper co-packaged Samtec Si-Fly^® HD connectors are placed on each side of the Marvell ASIC. Each Si-Fly HD connector supports 64 DP/32 lanes running at 200 Gbps for 6.4 Tbps aggregate throughput. The summation of 16 ports running at 6.4 Tbps provides the total system throughput of a 100T link.

Once this co-packaged substrate is in a system, these cables can be routed to the front panel (for example, to an OSFP) or to the back panel to a Samtec Si-Fly HD Backplane connector system.

To achieve 100T on the front panel, you need a 2RU system with OSFPs. To the back panel, you can take it to our very high-density Si-Fly HD Backplane connector, and then you can have all of these routed to the back panel in a 1RU.

So 100T in a 1RU gives the highest density for a passive Cu link for a scale-up type of architecture.

This co-packaged copper design was also shown at the Marvell booth, where two 100T switches were shown sitting next to each other, showing a 200T system all going to the backplane.

Samtec’s Si-Fly HD CPC is the industry’s highest footprint density, robust interconnect, enabling 102.4T, that’s 512 lanes at 200G, in a 95 x 95 mm chip substrate. Co-packaged CPX offers the lowest loss signal transmission from the package to the front panel or backplane while providing the highest density.

Samtec presented a live product demonstration of a 200G co-packaged channel at DesignCon 2025. It incorporated our Si-Fly HD co-packaged copper cable systems and Broadcom’s 200G SerDes technology.

Please contact us if you have any questions about this demonstration. We would love to hear from you.