ACH3218-222-TD01

Overview

The ACH3218-222-TD01 is a third-order LC(T-type) low-pass EMI filter manufactured by TDK Corporation. Designed for surface-mount applications, it features a 1210 (3225 metric) package with three printed circuit board pads. The component supports a maximum current rating of 1.5 A and operates within a voltage range up to 20 V. It exhibits a resistance of 0.06 ohms and provides attenuation of 25 dB at frequencies between 30 MHz and 85 MHz. The device functions effectively across an operating temperature range of -40°C to 125°C.

Feature Summary

• Third-order LC(T-type) topology for enhanced noise suppression
• Low-profile surface-mount design suitable for space-constrained layouts
• High thermal stability supporting wide industrial temperature ranges

Applications

• General-purpose EMI filtering in electronic circuits
• Power line noise reduction in consumer electronics
• Signal integrity protection in embedded systems

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels due to obsolete status. Confirm RoHS3 compliance and lead-free specifications against current regulatory requirements. Validate package dimensions and pinout compatibility during integration planning. Request updated datasheets to ensure alignment with original technical parameters before finalizing procurement decisions.

Selection Notes

Select this component when third-order attenuation characteristics are required for specific frequency bands. Ensure the 1.5 A current rating meets system load requirements without saturation. Verify that the 1210 footprint aligns with existing PCB layout constraints. Consider the 20 V voltage rating relative to operational supply levels to prevent dielectric breakdown under peak conditions.

Part Context

This part belongs to the TDK ACH series of power line filters, designed for electromagnetic interference suppression in compact electronic devices. The series utilizes LC(T-type) networks to provide effective high-frequency noise attenuation while maintaining low insertion loss in the passband. These components are engineered for reliability in demanding environmental conditions.

Replacement Considerations

Public confirmed substitute: YFF18SC1H103MT0H0N.