ACH3218-103-TD01

Overview

The ACH3218-103-TD01 is a third-order LC(T-type) EMI feedthrough filter manufactured by TDK Corporation. Designed for surface-mount assembly, it utilizes a 1210 (3225 Metric) package with three printed circuit board pads. The component features a rated voltage of 20V and supports a continuous current of 1.5A. It operates within a temperature range of -40°C to 125°C. The device provides attenuation of 25dB at frequencies between 30MHz and 85MHz, effectively suppressing electromagnetic interference in power line applications.

Feature Summary

• Third-order LC(T-type) low-pass filtering architecture
• Surface-mount design compatible with standard SMD processes
• High current handling capability for power line protection

Applications

• General-purpose EMI suppression
• Power line filtering
• Electromagnetic interference reduction in electronic circuits

Procurement Notes

Verify the current production status before procurement as this component may be discontinued or subject to last-time buy notices. Confirm RoHS compliance and environmental certifications against specific project requirements. Ensure the 1210 footprint matches the target PCB layout. Cross-reference manufacturer part numbers with distributor codes to avoid ordering errors due to suffix variations.

Selection Notes

Select this component when a compact, high-current EMI filter is required for power lines. The 1210 package offers a balance between size and performance. Verify that the 20V rating and 1.5A current capacity meet the circuit's operational demands. Consider the third-order attenuation characteristics for effective noise suppression in the specified frequency range compared to lower-order alternatives.

Part Context

This component belongs to the ACH series of 3-terminal filters from TDK. These devices are engineered for efficient electromagnetic interference suppression in small form factors. The series typically includes various capacitance values to suit different filtering needs while maintaining consistent physical dimensions and mounting styles for design flexibility across multiple product lines.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Consult official TDK resources for recommended replacements if this specific model is unavailable.