UM8611

Overview

The UM8611 is an integrated EMI filter and TVS diode array designed for high-speed data line protection. It features a Pi-filter topology with LC components, specifically offering inductance values of 17nH and capacitance values of 15pF per line. The device is available in an 8-UFDFN surface-mount package, providing compact footprint solutions for signal integrity management.

Feature Summary

• Integrates LC filtering and transient voltage suppression in a single component
• Utilizes Pi-filter topology for enhanced noise attenuation
• Designed for surface-mount assembly to save board space

Applications

• High-speed data interface protection
• Signal line EMI suppression
• Transient voltage protection for sensitive digital circuits

Procurement Notes

Verify the specific datasheet version and RoHS compliance status before procurement. Confirm the exact package marking and pinout configuration against your PCB layout requirements. Ensure the supplier provides original manufacturer documentation to guarantee component authenticity and performance consistency.

Selection Notes

Select this component when simultaneous EMI filtering and overvoltage protection are required for high-speed signals. Consider the 17nH/15pF internal values for impedance matching and cutoff frequency requirements. Evaluate the 8-UFDFN package dimensions for spatial constraints in dense circuit designs.

Part Context

Union Semiconductor International Limited specializes in linear and mixed-signal ICs that bridge analog and digital domains. The UM8611 belongs to their series of protective devices aimed at enhancing system reliability by managing power supply conversions and providing circuit protection against electrical stress.

Replacement Considerations

Consult official Union Semiconductor documentation for confirmed substitute part numbers. Verify compatibility regarding package type, electrical characteristics, and functional equivalence before substituting.