ACH4518-103-TD01

Overview

The ACH4518-103-TD01 is a high-current EMI filter circuit manufactured by TDK Corporation. It functions as a signal line and DC power line filter utilizing an LC (T) topology. The component features a capacitance of 0.015 uF, a voltage rating of 50 V, and a current rating of 2 A. It operates within a frequency range of 15 MHz to 75 MHz with an attenuation of 25 dB. The device employs SMD/SMT termination in a 1812 (4532 metric) package, measuring 4.5 mm in length, 3.2 mm in width, and 1.8 mm in height.

Feature Summary

• Designed for high-current electromagnetic interference suppression in power line applications
• Utilizes a compact three-terminal surface mount structure for efficient space utilization
• Provides effective noise reduction through LC (T) filter circuitry

Applications

• Power line filtering in electronic systems
• Signal line noise suppression
• General purpose EMI mitigation in compact devices

Procurement Notes

Verify the specific suffix TD01 against official TDK documentation to confirm exact packaging and compliance status. Confirm availability status as distribution channels may indicate end-of-life or limited stock conditions. Ensure the selected variant matches the required capacitance and current ratings for the target application circuit design.

Selection Notes

Select this component when a low-profile, high-current EMI solution is required for DC power lines. The 1812 footprint suits applications with strict spatial constraints. Verify that the 2 A current rating and 50 V voltage rating exceed the operational requirements of the target circuit to ensure reliability and safety margins during operation.

Part Context

This part belongs to the TDK ACH series of EMI network filters. These components are engineered specifically for suppressing electromagnetic interference in both signal and DC power lines. The series offers various capacitance values to tailor filtering characteristics for different frequency ranges while maintaining a consistent small form factor suitable for modern surface mount assembly processes.

Replacement Considerations

Consult official TDK substitution guides for verified alternatives. Cross-reference specifications such as capacitance, current rating, and physical dimensions to ensure compatibility.