SI3459A-B02-IM

Overview

The SI3459A-B02-IM is an 8-channel Power Sourcing Equipment (PSE) controller compliant with the IEEE 802.3at standard. It supports up to 30W per port and operates within a supply voltage range of 3.3V. The device features a current limit of 3 mA and functions reliably across temperatures from -40°C to +85°C. Packaged in a 56-QFN (8x8 mm) surface-mount format, it integrates control logic for PoE LAN applications.

Feature Summary

• Supports eight independent PoE channels compliant with IEEE 802.3at standards
• Integrates power sourcing equipment control logic for network interface applications
• Designed for surface-mount installation in compact electronic assemblies

Applications

• IEEE 802.3at compliant Power over Ethernet systems
• Multi-port PSE controllers for network infrastructure
• LAN devices requiring integrated power management

Procurement Notes

Verify component status as the SI3459A-B02-IM is classified as Not Recommended for New Designs (NRND). Confirm availability through authorized distributors or secondary markets. Ensure compatibility with existing PCB layouts due to the specific 56-QFN package dimensions. Review official datasheets for updated electrical characteristics before integration into new hardware designs.

Selection Notes

Select this component for designs requiring eight-channel PoE compliance under the 802.3at specification. Consider the NRND status when planning long-term production lifecycles. Evaluate the 56-QFN footprint against available board space. Verify thermal performance requirements against the specified operating temperature range of -40°C to +85°C for industrial or commercial environments.

Part Context

This part belongs to Skyworks Solutions' portfolio of Power Over Ethernet controllers. It serves as a specialized integrated circuit for managing power delivery over Ethernet cables. The device replaces discrete solutions by consolidating control functions into a single chip, simplifying design complexity for network equipment manufacturers.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Due to the NRND status, alternative components should be evaluated based on channel count, IEEE standard compliance, and package compatibility.