PM42084B-FEI

Overview

The PM42084B-FEI is a high-performance PCIe Gen4 switch manufactured by Microchip Technology. It features an 84-lane architecture with 44 ports, designed for optimal data transfer in demanding server and storage applications. The component utilizes a 1467-BBGA package with dimensions of 40x40 mm, supporting surface mount technology. This device operates as a PCI interface switch, providing robust connectivity for next-generation computing systems requiring high bandwidth and low latency.

Feature Summary

• Supports PCIe Gen4 standard for high-speed data transmission
• Features an 84-lane configuration with 44 dedicated ports
• Utilizes a 1467-BBGA surface mount package for compact integration

Applications

• High-density server infrastructure
• Enterprise storage area networks
• Data center interconnect solutions

Procurement Notes

Verify the specific revision level and RoHS compliance status directly with authorized distributors or the manufacturer before procurement. Confirm that the 1467-BBGA package dimensions align with your PCB footprint requirements. Ensure that the source documentation explicitly lists the PM42084B-FEI as the active part number to avoid confusion with similar variants in the PM4 series.

Selection Notes

Select this component when designing systems requiring extensive PCIe lane expansion and Gen4 speed capabilities. The 44-port capacity makes it suitable for complex topologies where multiple endpoints need simultaneous high-bandwidth access. Consider the thermal management requirements associated with the BBGA package and the power consumption profile typical of high-port-count switches.

Part Context

This part belongs to the PM4 series of high-speed PCIe switches from Microchip Technology. The series is engineered for modern data center environments, offering scalable solutions for network fabric expansion. The PM42084B-FEI represents a specific configuration within this family, distinguished by its 84-lane width and 44-port count, targeting high-throughput applications.

Replacement Considerations

Check for direct cross-reference part numbers from Microchip or other qualified vendors. Verify pin-to-pin compatibility and electrical parameter equivalence if substituting with other PCIe Gen4 switches. Ensure the alternative component supports the same 1467-BBGA form factor or requires mechanical redesign.