NUF4105FCT1

Overview

The NUF4105FCT1 is a four-channel EMI Pi-filter array integrated with ESD protection diodes, manufactured by onsemi. It features an RC (Pi) filter topology designed for high-frequency signal lines. The component provides a resistance of 100 Ohms and a total capacitance of 53 pF per channel. It is housed in a 15-WFBGA (Flip-Chip BGA) surface-mount package. The device is classified as obsolete and non-compliant with RoHS standards due to lead content.

Feature Summary

• Integrates four independent EMI filtering channels with built-in electrostatic discharge protection diodes
• Utilizes an RC Pi-filter architecture to attenuate electromagnetic interference on data lines
• Employs flip-chip packaging technology for compact footprint and thermal performance

Applications

• High-speed data interface protection in consumer electronics
• EMI suppression for USB or similar peripheral connections
• Signal line conditioning in mobile devices and portable gadgets

Procurement Notes

This component is officially listed as obsolete by the manufacturer. Procurement must rely on secondary market distributors or surplus inventory suppliers. Verify material composition declarations carefully, as the part contains lead and does not meet current RoHS compliance requirements. Confirm package integrity and authenticity through authorized third-party testing before integration into production designs.

Selection Notes

Designers should consider this part only for legacy system maintenance or specific non-RoHS applications where its exact electrical characteristics are required. Evaluate alternative modern components that offer RoHS compliance and active supply status. Ensure that the 100 Ohm resistance and 53 pF capacitance values align with the target impedance and frequency response requirements of the application circuit.

Part Context

The NUF4105FCT1 belongs to onsemi's portfolio of passive and mixed-signal components focused on signal integrity and protection. It serves as a specialized solution for managing noise and transient events on multi-channel interfaces. Its design reflects earlier industry trends toward integrating filtering and protection functions into single packages to save board space.

Replacement Considerations

NUF4107FCT1G