ACH3218-221-TD01

Overview

The ACH3218-221-TD01 is a three-terminal LC(T-type) EMI filter manufactured by TDK Corporation. It features a capacitance of 220 pF, a voltage rating of 20 V, and a current rating of 1.5 A. The component utilizes SMD/SMT termination and is housed in a 1210 (3225 metric) package with dimensions of 3.20mm x 1.80mm x 2.75mm. Designed for power line filtering, it operates within a temperature range of -40°C to 125°C.

Feature Summary

• Three-terminal LC(T-type) architecture for effective common-mode noise suppression
• High current handling capability suitable for power line applications
• Compact surface-mount design for space-constrained PCB layouts

Applications

• Power line filtering in electronic circuits
• EMI suppression in general-purpose electronic devices
• Noise reduction in low-voltage power distribution systems

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status and check for recent Product Change Notifications (PCNs) regarding manufacturing changes. Ensure the specific suffix matches required specifications as ordering variations may exist. Validate lead times and availability status prior to procurement planning.

Selection Notes

Select this component when a compact, high-current EMI filter is required for low-voltage DC lines. The 220 pF capacitance and 1.5 A rating define its electrical limits. Consider the 1210 package size for footprint compatibility. Evaluate thermal performance within the specified -40°C to 125°C operating range for the target application environment.

Part Context

Part of the TDK ACH series of three-terminal filters, designed for efficient electromagnetic interference suppression in small form factors. These components integrate capacitor and inductor functions into a single package, simplifying circuit design compared to discrete LC networks while maintaining high performance in noise attenuation.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Verify compatibility with existing designs if sourcing alternatives from other manufacturers.