ACH3218-472-TD01

Overview

The ACH3218-472-TD01 is a third-order LC(T-type) EMI filter designed for high-current power line applications. It features a capacitance of 68 pF, a rated voltage of 20 V, and a current rating of 1.5 A. The component operates within a temperature range of -40°C to 125°C and utilizes a 1210 (3225 metric) surface-mount package with three printed circuit board pads. It provides attenuation of 25 dB at frequencies between 30 MHz and 85 MHz.

Feature Summary

• Third-order LC(T-type) topology for enhanced noise suppression in high-current circuits
• Optimized for excellent attenuation characteristics when used with stable ground connections
• Surface-mount design suitable for automated assembly processes

Applications

• Power line filtering in embedded systems
• EMI suppression in general-purpose electronic circuits
• Noise reduction in microcontroller power supplies

Procurement Notes

Verify the specific suffix TD01 against the manufacturer's latest documentation to confirm pinout and termination specifications. Confirm RoHS compliance status as per the most recent product change notice. Ensure the procurement source provides valid traceability for this discontinued series component.

Selection Notes

Select this component for applications requiring high current handling up to 1.5 A with compact footprint constraints. The T-type configuration offers superior performance compared to standard pi-filters in grounded environments. Evaluate thermal management requirements given the 125°C maximum operating temperature limit.

Part Context

Part of the TDK ACH3218 series of EMI filter circuits. This series focuses on providing effective electromagnetic interference suppression for power lines in space-constrained designs. The ACH3218-472 variant specifically targets mid-range frequency noise attenuation.

Replacement Considerations

TDK recommends YFF18SC1H103MT0H0N as an alternative. Verify electrical compatibility and physical dimensions before substitution.