UM4601

Overview

The UM4601 is a four-line LC EMI filter integrated with transient voltage suppression (TVS) capabilities, manufactured by Union Semiconductor International Limited. Designed for high-frequency noise attenuation, this component operates within a temperature range of -40°C to +85°C. It features a cutoff frequency of 150MHz and provides a capacitance value of 15pF per line. The device is housed in a compact UFDFN-8 package, facilitating surface-mount integration into dense circuit layouts while ensuring compliance with RoHS standards.

Feature Summary

• Integrates four-channel LC filtering with TVS protection in a single package
• Provides simultaneous EMI/RFI noise suppression and transient voltage clamping
• Optimized for high-frequency signal integrity maintenance up to 150MHz

Applications

• High-speed data line protection in consumer electronics
• EMI suppression for USB or HDMI interfaces
• Transient protection for sensitive digital input/output ports

Procurement Notes

Verify the specific ordering suffix against the official datasheet to confirm pin configuration and tape-and-reel specifications. Ensure the supplier provides valid RoHS compliance documentation. Cross-reference the part number with Union Semiconductor's current product portfolio to confirm availability status and manufacturing origin before finalizing procurement orders.

Selection Notes

Select the UM4601 when multi-line signal paths require combined noise filtering and surge protection. Evaluate the 15pF capacitance impact on signal rise times for high-speed applications. Confirm that the UFDFN-8 footprint aligns with existing PCB layout constraints and thermal management requirements for the target operating environment.

Part Context

Union Semiconductor International Limited designs linear and mixed-signal ICs bridging analog and digital domains. The UM4601 belongs to their EMI/RFI filter series, utilizing LC networks for noise reduction. This product line targets robust signal integrity solutions for modern electronic devices requiring compact, multi-functional protection components.

Replacement Considerations

Consult official substitution guides for equivalent 4-line LC filters with integrated TVS. Verify matching capacitance values and cutoff frequencies to ensure signal compatibility.