Molex QSFP-DD Interconnect System

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Molex QSFP-DD interconnect system and cable assemblies

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QSFP-DD interconnect system’s 8-lane electrical interface transmits up to 28 Gbps NRZ or 56 Gbps PAM-4, up to 200 or 400 Gbps aggregate, with the same module form factor as QSFP interconnects, making them backward compatible.

Telecommunication and data center customers have increasing bandwidth requirements and, therefore, require high-density interconnects. QSFP-DD interconnect system enables faceplate density equal to the current 2x1 QSFP form factor, but with 8-lane ports. In other words, a total of 256 differential pairs with 32 ports delivers double-lane density within the same form factor.

Customers can upgrade their box in advance of new cables, and their infrastructure won’t be idle while they wait for cables to be built. QSFP-DD Interconnect System supports legacy cables as well as upgraded plugs.
The MSA had defined:

QSFP-DD Module form factor
2-by-1 cage and connector form factor
1-by-1 cage and SMT connector form factor
Pinout and management interface

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3M has presented New 3M™ 100G QSFP28 Direct Attach Copper Cable Assemblies, 9Q Series are passive copper cable assemblies which utilize 3M Twin Axial Cable technology to create a highly-flexible, foldable, high-performance solution.

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Features/Applications

Table

Features	Applications
28 Gbps NRZ and 56 Gbps PAM4 Preferential coupling design uses a narrow-edge coupled, blanked- and formed-contact geometry and insert molding Surface-mount technology (SMT) design available Stacked integrated connectors and cages are available in 2-by-1 configuration Fully integrated design Identical mating interface as the QSFP+ connector for backward compatibility Nickel-plated heat sink 0.80mm-pitch host connector designed for placement beneath EMI cage QSFP-DD Cable Assemblies Temp-Flex cable technology Meets IEEE 802.3bj, InfiniBand EDR and SAS 3.0 specifications	Data center solutions - Servers - Storage Telecommunications/networking - Cellular infrastructure - Central offices - Multi-platform service systems - Routers - Servers - Switches This is not a definitive list of applications for this product. It represents some of the more common uses.

Features

Applications

28 Gbps NRZ and 56 Gbps PAM4
Preferential coupling design uses a narrow-edge coupled, blanked- and formed-contact geometry and insert molding
Surface-mount technology (SMT) design available
Stacked integrated connectors and cages are available in 2-by-1 configuration
Fully integrated design
Identical mating interface as the QSFP+ connector for backward compatibility
Nickel-plated heat sink
0.80mm-pitch host connector designed for placement beneath EMI cage
QSFP-DD Cable Assemblies
Temp-Flex cable technology
Meets IEEE 802.3bj, InfiniBand EDR and SAS 3.0 specifications

Data center solutions
- Servers
- Storage
Telecommunications/networking
- Cellular infrastructure
- Central offices
- Multi-platform service systems
- Routers
- Servers
- Switches

This is not a definitive list of applications for this product. It represents some of the more common uses.