VEMI355A-HAF-G-08

Overview

The VEMI355A-HAF-G-08 is a second-order low-pass RC (Pi) EMI filter designed for surface mount applications. It features three channels with a resistance of 50 ohms and capacitance of 37pF per channel. The device supports a maximum current of 4 A and operates within a temperature range of -40°C to 125°C. Housed in a compact 6-WDFN exposed pad package measuring 1.60mm x 1.60mm x 0.8mm, it provides integrated ESD protection alongside signal filtering capabilities.

Feature Summary

• Integrates EMI filtering with electrostatic discharge protection in a single component
• Provides multi-channel signal conditioning for high-speed data lines
• Utilizes an RC Pi-network topology for effective noise attenuation

Applications

• Mobile device data line protection
• High-speed interface circuit filtering
• Portable electronics signal integrity management

Procurement Notes

Verify the specific suffix 'HAF' against the manufacturer's latest documentation to confirm pinout compatibility and material composition. Ensure that the 6-WDFN package dimensions align with the target PCB footprint. Confirm RoHS3 compliance status if required by specific regional regulations or end-product standards before finalizing procurement.

Selection Notes

Select this component when simultaneous EMI suppression and ESD protection are required for multiple differential or single-ended lines. The 50-ohm resistance value should be evaluated against the source impedance of the connected circuits to ensure minimal signal degradation. Consider the 4 A current rating to verify suitability for the power delivery requirements of the protected lines.

Part Context

This component belongs to Vishay's VEMI series of integrated EMI filters. These devices combine passive filtering elements with transient voltage suppression diodes to protect sensitive electronics from both electromagnetic interference and electrostatic discharge events, offering a space-saving alternative to discrete component solutions.

Replacement Considerations

The VEMI255A-HAF-G-08 is a documented two-channel variant within the same family. Verify channel count requirements before substitution. Other models in the VEMI series may offer different resistance values or channel configurations.