ACH32C-220-T

Overview

The ACH32C-220-T is a surface-mount EMI filter circuit manufactured by TDK Corporation. It utilizes an LC (T-Type) topology to suppress electromagnetic interference in power lines. The component features a capacitance of 22 pF and operates within a frequency range of 1.3 GHz to 2.5 GHz, providing attenuation of -15 dB. It is rated for 6 A current and 50 V voltage. Packaged in a 1206 (3216 metric) SMD case with dimensions of 3.2 mm x 1.6 mm x 2.1 mm, it supports operating temperatures from -40°C to +125°C.

Feature Summary

• Integrates ferrite beads and chip capacitors into a single T-type EMC filter structure
• Engineered to handle high current levels for power line applications
• Surface-mount design suitable for automated assembly processes

Applications

• Power line filtering in embedded systems
• EMI suppression for microcontroller circuits
• High-frequency noise reduction in electronic devices

Procurement Notes

Verify the specific suffix and capacitance value, as the ACH32C series includes variants like 220-T (22pF) and 222-T (2200pF). Confirm availability status, as some distributors list this part as End-of-Life or out of stock. Ensure the selected variant matches the required attenuation and frequency specifications for the target application.

Selection Notes

Select this component when a compact, high-current capable EMI filter is needed for power lines. The 1206 package offers a balance between size and performance. Verify that the 22 pF capacitance and 1.3–2.5 GHz attenuation profile align with the noise spectrum of the circuit. Consider thermal limits if operating near the maximum temperature rating.

Part Context

This part belongs to the TDK ACH32C series of three-terminal EMI filters. These components are designed to replace discrete ferrite beads and capacitors, saving board space. The series is widely used in consumer electronics and industrial equipment for robust noise suppression.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Designers should consult official TDK resources for qualified alternatives.