ACF451832-472-TLD01

Overview

The TDK ACF451832-472-TLD01 is a surface-mount EMI filter circuit designed for signal line protection. It features an LC (T) topology within a compact 1812 (4532 metric) package, measuring 4.5 x 3.2 x 1.8 mm. The component operates with a rated voltage of 50 V DC and supports a maximum current rating of 300 mA. It provides effective attenuation in the frequency range of 25-90 MHz, with specific models in this series offering up to 25 dB attenuation at 460 MHz. The device utilizes SMD/SMT termination styles for automated assembly.

Feature Summary

• LC (T) circuit configuration for efficient electromagnetic interference suppression
• Compact 1812 surface-mount footprint suitable for space-constrained designs
• Low profile construction with 1.8 mm height for standard PCB integration

Applications

• Data lines for mobile devices
• Portable electronic equipment
• Battery chargers
• Energy-efficient systems

Procurement Notes

Verify the exact suffix against official TDK documentation, as variations such as TD01 or TLD01 may exist. Confirm availability status, as some listings indicate discontinued or limited stock conditions. Ensure the selected variant matches the required attenuation characteristics and physical dimensions for your specific PCB layout constraints before finalizing procurement.

Selection Notes

Select this component when designing circuits requiring EMI filtering for low-voltage signal lines. The 300 mA current rating and 50 VDC limit define its operational boundaries. Consider the 1812 package size for board space optimization. Verify that the attenuation performance meets the noise suppression requirements of the target application environment, particularly for frequencies between 25 MHz and 90 MHz.

Part Context

This part belongs to the TDK ACF series of EMI/RFI filters. These components are engineered for suppressing conducted emissions in digital and analog signal paths. The series offers various inductance values and attenuation profiles, allowing designers to tailor filtering performance to specific noise spectra while maintaining a consistent form factor for manufacturing flexibility.

Replacement Considerations

Direct substitutes include other TDK ACF series parts with similar electrical ratings, such as ACF451832-470-T or ACF451832-330-TLD01. Cross-referencing datasheets is essential to ensure equivalent attenuation curves and current handling capabilities match the original design specifications.