BCM53346A0KFSBLG - 24GE+4x10G Smart Switch SoC | Broadcom
N.º de pieza: BCM53346A0KFSBLG ✓ Activo| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $65 | $65,00 |
| 10 | $58.5 | $585,00 |
| 100 | $52 | $5.200,00 |
| 500 | $47.25 | $23.625,00 |
| 1.000 | $43.1 | $43.100,00 |
BCM53346A0KFSBLG Descripción general
A Smart Switch (also known as a managed switch SoC or L2+/L3 Lite switch) is a highly integrated network processor that combines copper PHY transceivers, MACs, packet buffers, an address lookup engine, QoS/ACL hardware, and an embedded management CPU into one silicon die. Within the broader taxonomy, a Smart Switch sits between an unmanaged switch ASIC and a full Layer 3 switch/router SoC, in the hierarchy: Smart Switch -> Managed Ethernet Switch -> Network Switch -> Networking IC -> Semiconductor. This category targets applications needing VLAN, IGMP snooping, ACL filtering, and basic routing without the cost of a chassis-class switch.
Key features include 24 integrated tri-speed Gigabit PHYs with Energy Efficient Ethernet (EEE) support, four 10G SerDes supporting SFP+ / 10GBase-R, an integrated ARM-class management processor, hardware-based L2/L3/L4 ACL, sFlow / port-mirroring, and IEEE 1588v2 timestamping. The device is offered in a BGA package suitable for reflow assembly and supports industrial-grade operating temperatures for harsh-environment deployments.
Architecture-wise, the BCM53346 family uses a shared-memory switch fabric with deep packet buffers, multi-stage egress queuing (typically 8 queues per port), and a TCAM-based classifier. The integrated CPU runs a Broadcom SDK (ROBO or equivalent), enabling rapid development of CLI, Web, SNMP, and NETCONF management planes. This integration eliminates external PHY and switch-chip complexity, reducing BOM cost and PCB area.
Typical applications include managed Gigabit Ethernet switches for SMB and enterprise access layers, industrial Ethernet switches with PTP timing, smart-building/factory-floor aggregation switches, 10G-uplink IP surveillance NVR switches, and fiber-to-the-room (FTTR) ONTs/aggregators. The four 10G uplinks also enable use as a stacking link between access-tier switches.
When designing with this part, allocate sufficient PCB area for the BGA thermal pad and high-speed SerDes routing. Provide clean, well-decoupled power rails and follow Broadcom reference layout guidelines for the 10G SerDes channels to meet IEEE 802.3ae return-loss masks.
This page synthesizes distributor stock data, parametric drop-in alternatives, and practical layout notes that complement - but do not replace - the manufacturer datasheet.
Alternativas directas para BCM53346A0KFSBLG — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
BCM53344A0KFSBLG
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BCM53354A0KFSBLG
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BCM53346A0KFSBLG Valores máximos y características eléctricas
| Product Type | Smart Switch SoC / Managed Ethernet Switch IC |
| Switching Capacity | 24x GE + 4x 10G (non-blocking) |
| Copper Ports | 24 x 10/100/1000BASE-T (integrated PHY) |
| Uplink Interfaces | 4 x 10G SerDes (SFP+ / 10GBase-R capable) |
| Switching Fabric | Shared-memory, store-and-forward |
| Layer Support | L2 / L2+ / L3 Lite (hardware) |
| Management CPU | Integrated ARM-class processor |
| ACL | L2/L3/L4 hardware ACL (TCAM) |
| Energy Efficient Ethernet | IEEE 802.3az supported |
| PTP / IEEE 1588 | IEEE 1588v2 hardware timestamping |
| Tipo de montaje | Surface Mount (BGA) |
| Estado RoHS | Compliant |
| Lead-Free | Yes |
Guía de configuración de pines de BCM53346A0KFSBLG standard
Configuración de pines para BCM53346A0KFSBLG (encapsulado standard). Este dispositivo de potencia presenta terminales de puerta, drenador y fuente. Para encapsulados no polarizados, consulte la hoja de datos del fabricante para conocer la orientación exacta del pin 1 y los detalles del footprint. Las aplicaciones habituales incluyen el diseño de fuentes de alimentación, el accionamiento de motores y la conmutación de cargas.
No hay datos detallados de patillaje disponibles para BCM53346A0KFSBLG.
Consulte la hoja de datos para ver la configuración completa de patillas.
Aplicaciones típicas
BCM53346A0KFSBLG es adecuado para 6 aplicacións: Managed SMB Gigabit Switch, Enterprise Access-Layer Switch, Industrial Ethernet Aggregation Switch, IP Surveillance NVR Switch, Smart Building / IoT Aggregation Switch, 10G Stacking / Fiber Aggregation Switch.
Managed SMB Gigabit Switch
The BCM53346A0KFSBLG is purpose-built for managed SMB Gigabit switches requiring 24 wire-speed 10/100/1000BASE-T ports with hardware L2/L3/L4 ACL, IGMP snooping, and QoS. Its 128 Gbps non-blocking fabric guarantees line-rate forwarding on all 24 copper ports plus 4 x 10G uplinks, eliminating head-of-line blocking under bursty SMB traffic patterns. The integrated ARM-class CPU runs the Broadcom SDK, enabling CLI, Web, SNMPv3, and NETCONF management planes without an external management processor. EEE (802.3az) support reduces idle-port power by up to 70%, an important differentiator for energy-conscious SMB deployments. Compared with discrete PHY-plus-switch-chip solutions, the BCM53346A0KFSBLG shrinks BOM by ~30% and PCB area by ~40%.
Recomendado
Enterprise Access-Layer Switch
For enterprise access-tier switches, the BCM53346A0KFSBLG delivers the 24GE + 4x10G density required for typical 1U rack-mount access switches serving deskside VoIP phones, wireless APs, and workstations. Hardware ACL offloads L2/L3/L4 filtering at line rate, while TCAM-based classification supports complex policy enforcement without CPU bottlenecks. The 4 x 10G SerDes uplinks enable uplink aggregation or stacking with higher-tier distribution switches via SFP+ DAC/AOC. Its Broadcom SDK provides mature support for VRRP, OSPF, RIP, and BGP-lite, sufficient for L3-lite access deployments. Industrial-grade temperature support also allows deployment in less climate-controlled wiring closets.
Recomendado
Industrial Ethernet Aggregation Switch
The BCM53346A0KFSBLG's industrial-grade operating range and integrated IEEE 1588v2 hardware timestamping make it ideal for factory-floor aggregation switches and substation Ethernet. PTP support enables sub-microsecond synchronization for protective relays, synchronized motion controllers, and deterministic EtherNet/IP / PROFINET traffic. The 24 integrated PHYs minimize PCB area, critical for sealed industrial enclosures, while hardware QoS with 8+ queues per port prioritizes control-plane traffic over best-effort monitoring. EEE further reduces power in always-on industrial installations. The Broadcom SDK supports industrial protocols (Modbus TCP, DNP3) and zero-touch provisioning for large fleet deployments.
Recomendado
IP Surveillance NVR Switch
The BCM53346A0KFSBLG powers 24-port PoE-aware NVR switches for IP surveillance deployments, where its 4 x 10G uplinks aggregate multiple 4K camera streams to a central NVR. Hardware IGMP snooping and multicast filtering prevent broadcast storms from flooding the uplink when many cameras stream simultaneously. ACL-based traffic policing can prioritize recording traffic over best-effort management traffic. EEE reduces idle-port power in 24/7 surveillance installations where cameras are always-on but traffic is bursty. The integrated management CPU eliminates the need for an external MCU, simplifying PoE power-budget monitoring via the SDK.
Recomendado
Smart Building / IoT Aggregation Switch
For smart-building aggregation, the BCM53346A0KFSBLG aggregates traffic from many PoE-powered Wi-Fi APs, IP phones, lighting controllers, and BACnet/Modbus gateways onto 10G uplinks to the building core switch. Energy Efficient Ethernet and per-port power policing cut PoE consumption by up to 70% during off-hours, an important KPI for green-building certifications such as LEED. The integrated management CPU supports cloud-managed switch firmware (e.g., OpenSync, OpenWrt-based) enabling zero-touch deployment across thousands of switches in a building portfolio.
Recomendado
10G Stacking / Fiber Aggregation Switch
When deployed as a stacking leaf or fiber aggregation switch, the BCM53346A0KFSBLG's 4 x 10G SerDes channels can be configured as SFP+ fiber uplinks to aggregate GPON/XGS-PON ONTs, FTTR nodes, or remote switches over single-mode fiber. The non-blocking 128 Gbps fabric ensures that aggregated 10G uplinks never oversubscribe the switching core. Hardware-based sFlow and port mirroring feed telemetry to network analytics platforms without CPU load. The Broadcom SDK supports MPLS-TP and provider-bridge features for carrier-Ethernet aggregation use cases.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para BCM53346A0KFSBLG — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | BCM53344A0KFSBLG | BCM53354A0KFSBLG |
|---|---|---|---|
| Brand | Broadcom | Broadcom (same family) | Broadcom (same family) |
| Package | BGA (broadcom BCM5334x family) | BGA - same family footprint | BGA - same family footprint |
| 10G Uplinks | 4 x 10G SerDes | 2-4 x 10G SerDes | 4-6 x 10G SerDes |
| Integrated PHY | Yes (24 copper PHYs) | Yes (16 copper PHYs) | Yes (copper PHYs) |
| Management CPU | Integrated ARM-class | Integrated ARM-class | Integrated ARM-class |
| IEEE 1588v2 | Yes (hardware timestamping) | Yes (hardware timestamping) | Yes (hardware timestamping) |
| Lifecycle Status | Active | Active | Active |
| RoHS | Compliant | Compliant | Compliant |
Diferenciadores clave
- All-in-one integration eliminates external PHY/switch-chip BOM (frente a BCM53344A0KFSBLG)
- Higher port density than BCM53344 in same family (frente a BCM53344A0KFSBLG)
- Mature Broadcom SDK vs newer BCM53354 (frente a BCM53354A0KFSBLG)
Notas de diseño
The BCM53346A0KFSBLG BGA package dissipates significant heat under full 24-port line-rate load with all PHYs active. Per Broadcom reference designs, allocate a continuous ground plane directly beneath the BGA thermal pad with at least 8 thermal vias (0.3 mm drill, 1.0 mm pitch) to a bottom-side copper pour. Theta-JA is highly layout-dependent - keep adjacent high-current switching regulators at least 25 mm away. Forced airflow (>=1 m/s) is recommended in sealed enclosures.
Route the four 10G SerDes channels with controlled-impedance differential pairs (100 ohm diff, +/-10%) and length-match within the SerDes group to the tolerance specified in the Broadcom reference layout (typically <0.13 mm). Use AC-coupling capacitors (0.1 uF, 0402) at the SerDes outputs as the Broadcom reference design dictates. Keep SerDes pairs away from switching power supply inductors and noisy digital signals to meet IEEE 802.3ae return-loss masks.
Provide separate, well-decoupled power rails for the analog PHY blocks (AVDD), digital core (DVDD), and SerDes (SVDD) - each rail requires a 0.1 uF X7R ceramic cap placed within 2 mm of every supply pin, plus a bulk 10-22 uF tantalum or polymer cap on each rail. Use a ferrite bead between AVDD and the digital supply to suppress switching-noise coupling. Insufficient PHY supply decoupling is the most common cause of CRC errors on Gigabit links.
The 24 integrated copper PHYs are sensitive to return-path discontinuity. Maintain a continuous reference ground plane under all MDI traces without splits or voids. Use 90-ohm differential impedance for MDI pairs (per IEEE 802.3) and avoid via stubs by using back-drilling or HDI micro-vias on multi-layer boards. PHY-to-RJ45 magnetics should be kept under 25 mm to minimize insertion loss at 100 MHz.
Do not skip the in-system firmware programming step - the BCM53346A0KFSBLG ships with a bootloader but requires external SPI flash for full management stack. Use a SPI flash size of at least 16 MB to accommodate the SDK and persistent configuration. Do not mix 1.0 V and 1.2 V core rails on the same regulator - the part's internal power sequencing is sensitive and out-of-spec sequencing can brick the device.
Información de cumplimiento
RoHS compliance confirmed via Broadcom product page and authorized distributor listings. Halogen-free status not explicitly stated in verified data - confirm with Broadcom datasheet for green-product requirements.
