ACH4518-471-TD01

Overview

The ACH4518-471-TD01 is a T-type EMI filter circuit manufactured by TDK Corporation, designed for signal and DC power line applications. It features an LC (T) topology with a capacitance of 470 pF and a rated voltage of 50 V. The component supports a current rating of 2 A and operates within a frequency range of 95 MHz to 180 MHz, providing 25 dB attenuation. It utilizes SMD/SMT termination in a 1812 (4532 metric) package measuring 4.5 mm x 3.2 mm x 1.8 mm. Operating temperatures range 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 in stable ground circuits.
• Provides excellent attenuation characteristics for EMI suppression.

Applications

• High-current circuit filtering
• Signal line protection
• DC power line filtering

Procurement Notes

Verify component status as the ACH4518-471-TD01 is listed as obsolete or end-of-life by major distributors. Confirm availability through secondary markets or alternative sourcing channels if immediate procurement is required. Ensure compatibility with existing design specifications before proceeding with acquisition.

Selection Notes

Select this component for applications requiring high current handling up to 2 A in a compact 1812 footprint. The T-type LC configuration offers effective noise suppression for both signal and DC lines. Consider the operating temperature range and voltage ratings to ensure suitability for the specific environmental and electrical conditions of the target application.

Part Context

This component belongs to the TDK ACH series, which comprises T-type EMC filters combining ferrite beads and chip capacitors. These filters are specifically engineered for high-current applications, offering a compact solution for electromagnetic interference suppression in space-constrained designs requiring robust performance.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. As the component is marked obsolete, consult TDK technical support or authorized distributors for recommended alternatives within the same series or functional equivalents.