ACH3218-331-TD01

Overview

The TDK ACH3218-331-TD01 is a third-order LC (T-type) EMI filter designed for power line applications. It features a single channel with a current rating of 1.5 A and a voltage rating of 20 V. The component utilizes a surface-mount package in the 1210 (3225 metric) footprint, specifically requiring three PCB pads. It operates within a temperature range of -40°C to 125°C and provides attenuation characteristics suitable for general-purpose EMI suppression.

Feature Summary

• Third-order LC T-type topology for enhanced noise suppression
• Designed for high-current circuit applications
• Surface-mount construction for automated assembly

Applications

• Power line filtering
• General-purpose EMI suppression

Procurement Notes

Verify component status as obsolete or NRND through official TDK channels before design finalization. Confirm RoHS compliance and environmental classifications such as MSL level 1. Ensure availability of alternative sources if production continuity is required, as distribution support may vary by region.

Selection Notes

Select this component for circuits requiring stable ground references to achieve optimal attenuation performance. The 1.5 A current rating and 20 V voltage limit define the operational boundaries. The 1210 package size offers a compact solution for space-constrained designs needing third-order filtering characteristics.

Part Context

This part belongs to the TDK ACH3218 series of T-type EMC filters. These components are engineered for use in high-current circuits where excellent attenuation characteristics are necessary. The series supports various capacitance values to tailor frequency response for specific electromagnetic interference requirements.

Replacement Considerations

Official substitutes include ACH3218-472-TD01 and YFF18SC1H103MT0H0N. Verify pin compatibility and electrical ratings when transitioning between these options.