ACH4518-472-TD01

Overview

The ACH4518-472-TD01 is a surface-mount EMI network filter manufactured by TDK Corporation. It utilizes an LC (T) circuit topology designed for signal and DC power line applications. Key electrical parameters include a capacitance of 470 pF, a rated voltage of 50 V, and a current rating of 2 A. The component features a cutoff frequency of 40 MHz and operates within a temperature range of -40°C to +125°C. It is housed in a 1812 (4532 metric) package with dimensions of 4.5 mm x 3.2 mm x 1.8 mm.

Feature Summary

• LC (T) circuit topology for effective noise suppression
• High current handling capability suitable for power lines
• Compact surface-mount design for space-constrained layouts

Applications

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

Procurement Notes

This component is officially discontinued by the manufacturer. Verification of availability should focus on surplus distributors or authorized secondary markets. Confirm RoHS compliance status and lot traceability when sourcing from non-original channels. Ensure the replacement source provides valid datasheets matching the original specifications.

Selection Notes

Select this part for applications requiring low capacitance values in high-current environments. The 470 pF value targets specific high-frequency noise profiles above the 40 MHz cutoff. Verify that the 2 A current rating meets the operational load requirements. Consider the 1812 footprint compatibility during PCB layout planning.

Part Context

Part of the TDK ACH series of large current EMI filters. Designed for robust performance in demanding electronic environments. The series offers various capacitance options to tailor filtering characteristics for different signal integrity needs.

Replacement Considerations

Official substitutes are not explicitly confirmed in the provided documentation. Check for cross-references such as YFF18SC1H472MT0H0N if available from other manufacturers, ensuring identical LC topology and current ratings.