ACH4518-223-TD01

Overview

The ACH4518-223-TD01 is a third-order LC(T) EMI filter circuit manufactured by TDK Corporation. Designed for signal and DC power lines, it operates with a maximum current rating of 2 A and a voltage rating of 50 V. The component utilizes a surface-mount 1812 (4532 metric) package with dimensions of 4.5 mm length, 3.2 mm width, and 1.8 mm height. It features a capacitance of 0.022 µF and a DC resistance of 0.06 ohms. The filter provides an attenuation of 25 dB within the frequency range of 9 MHz to 65 MHz.

Feature Summary

• Provides selective high-frequency protection through a third-order LC(T) topology
• Supports large current applications up to 2 A on signal and DC power lines
• Offers compact surface-mount integration in a standard 1812 footprint

Applications

• Signal line filtering
• DC power line filtering
• General-purpose EMI suppression

Procurement Notes

Verify component availability as this part may be obsolete or discontinued. Confirm RoHS compliance status and check for valid replacement alternatives from the manufacturer before finalizing procurement plans.

Selection Notes

Select this component for designs requiring robust EMI suppression in space-constrained environments. Ensure the operating current does not exceed 2 A and verify that the 1812 package dimensions fit the PCB layout constraints.

Part Context

This component belongs to the TDK ACH series of EMI network filters. These devices are engineered for efficient noise reduction in electronic circuits, combining inductive and capacitive elements to attenuate unwanted electromagnetic interference across specified frequency bands.

Replacement Considerations

Public confirmed substitute part numbers were not identified in the provided source material.