BCM88690CB1KFSBG

• Broadcom Ethernet Switch Device
• 4344-Ball PBGA Package
• 1 Mm Terminal Pitch
• Maximum Seated Height 5.64 Mm
• Single-Circuit Switching Device
• Introduced 2021

The Broadcom BCM88690CB1KFSBG is an Ethernet switch device supplied in a 4344-ball PBGA package with a 1 mm terminal pitch and a maximum seated height of 5.64 mm. Switch silicon of this class forwards Ethernet frames between many ports at line rate, applying lookup, queuing and traffic-management policy in hardware rather than in software. The very high ball count and 1 mm pitch reflect a high-bandwidth device with wide serial interfaces. The BCM88690CB1KFSBG was introduced in 2021.

High-ball-count Ethernet switch silicon sits at the center of carrier and data center networking equipment: routers and switches at the leaf, spine and aggregation layers, service-provider edge platforms, and merchant-silicon whitebox systems. Devices of this scale are designed onto line cards and fixed-configuration chassis where port bandwidth and buffering, not port count alone, drive the selection. Buyers are networking OEMs and ODMs, hyperscale hardware teams sourcing merchant silicon, and repair or spares programs supporting deployed platforms -- a segment where allocation and long lead times on switch ASICs are a recurring sourcing problem.