BCM53161XUB0KLFBG

Overview

The BCM53161XUB0KLFBG is a high-performance Ethernet switch controller from the BCM5316X series, designed for multi-gigabit applications. It integrates four 1GbE/2.5GbE SGMII+ ports and two 2.5GbE/10GbE XFI/SFI ports. The device supports up to eight 10/100/1000BASE-T ports with integrated GPHYs. It features I2C and SPI interfaces for management control. This component targets high-end SMB, industrial, and service provider environments requiring cost-effective multi-GE connectivity solutions.

Feature Summary

• Integrates multiple physical layer transceivers including SGMII+, XFI/SFI, and BASE-T GPHYs
• Supports mixed speed operation across 1G, 2.5G, and 10G Ethernet standards
• Provides digital management capabilities via I2C and SPI serial interfaces

Applications

• High-end Small and Medium Business (SMB) network infrastructure
• Industrial networking equipment requiring robust multi-gigabit connectivity
• Service provider edge devices and aggregation points

Procurement Notes

Verify the complete part number against official Broadcom documentation to ensure correct package type and temperature grade. Confirm that the specific suffix matches the required manufacturing revision. Cross-reference the datasheet version to validate interface compatibility and pinout definitions before integration into design schematics.

Selection Notes

Select this component when designing systems requiring a mix of copper and fiber uplinks alongside standard Ethernet ports. It is suitable for applications needing integrated PHYs to reduce external component count. Consider the thermal and power requirements associated with supporting up to eight BASE-T ports simultaneously in the system architecture.

Part Context

This part belongs to the BCM5316X family of 2.5GbE multiport switches. The series is engineered to deliver high-speed switching capabilities while maintaining cost efficiency. It serves as a bridge between traditional Gigabit Ethernet and emerging 2.5G/10G standards, facilitating smooth network upgrades in enterprise and industrial settings.

Replacement Considerations

Consult the official Broadcom replacement matrix for direct equivalents. Verify pin-to-pin compatibility and electrical specifications if substituting with other members of the BCM5316X series or newer generations.