NUF4220MNT1G

Overview

The onsemi NUF4220MNT1G is a four-line LC EMI filter array designed for audio applications, integrating EMI filtering and ESD protection in a single chip. It handles two speaker lines and one microphone line. The device provides greater than -30 dB attenuation from 800 MHz to 5.0 GHz with no insertion loss. It meets IEC61000-4-2 Level 4 standards, supporting 18 kV contact discharge. The component features a maximum line resistance of 1.1 Ω and is housed in a DFN8 2x2 mm package.

Feature Summary

• Integrates EMI filtering and ESD protection to replace multiple discrete components
• Provides high-frequency interference suppression without signal insertion loss
• Offers robust electrostatic discharge protection compliant with IEC61000-4-2 Level 4

Applications

• Audio interface circuits in portable devices
• Speaker line protection
• Microphone line protection

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current datasheet to ensure correct packaging and tape-and-reel specifications. Confirm RoHS compliance status and environmental declarations via official documentation before finalizing procurement orders.

Selection Notes

Select this component for designs requiring compact integration of filtering and protection for audio signals. Ensure the application involves speaker or microphone lines where high-frequency noise suppression and static discharge immunity are critical requirements.

Part Context

This part belongs to the NUF series of ESD suppressors and filters from onsemi. It is specifically engineered for audio interfaces, combining LC filtering topology with transient voltage suppression capabilities within a small footprint suitable for modern consumer electronics.

Replacement Considerations

NUF4220MN is the base part number variant.