BCM8747BKFBG

Overview

The BCM8747BKFBG is a quad-channel 10 Gigabit Ethernet SFI-to-XAUI PHY transceiver manufactured by Broadcom Limited. It integrates four independent 10GBASE-SR/LR compliant physical layer transceivers, each featuring an SFI serial interface on the host side and a XAUI parallel interface on the media side. The device supports forward error correction (FEC) encoding and decoding to enhance signal integrity over long-reach fiber optic links. Designed for high-density server and switch applications, it operates within a specified temperature range and utilizes a ball grid array package for compact board integration.

Feature Summary

• Integrates four independent 10GbE PHY channels with SFI and XAUI interfaces
• Supports Forward Error Correction (FEC) for improved link reliability
• Compliant with IEEE 802.3ae standards for 10 Gigabit Ethernet

Applications

• Blade server network load balancing switches
• High-speed data center interconnects
• Enterprise core and aggregation switches

Procurement Notes

This component is officially listed as End-of-Life (EOL). A discontinuance notification was issued on January 16, 2024. Availability is restricted, and sourcing should focus on verified surplus distributors or qualified replacement alternatives that maintain pin compatibility and functional equivalence for existing designs.

Selection Notes

Engineers replacing this part must verify that substitute components support the same SFI-to-XAUI mapping and FEC capabilities. Since the original part is discontinued, new designs should consider modern equivalents with updated power specifications and thermal profiles. Ensure the replacement package matches the footprint requirements of the target PCB layout.

Part Context

The BCM8747 series serves as a critical interface bridge in 10 Gigabit Ethernet infrastructure, connecting host processors via SFI to optical modules via XAUI. This specific variant includes the BKFBG suffix indicating the package type and temperature rating. It was widely deployed in networking equipment requiring low-latency, high-throughput physical layer connectivity before newer generations of integrated switches became available.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Users must consult Broadcom's official obsolescence notices or authorized distributor cross-reference tools for valid replacements.