ACF321825-471-TD01

Overview

The ACF321825-471-TD01 is a third-order LC(T-type) low-pass EMI filter designed for signal line applications. It features a single channel with a rated voltage of 20V and a maximum current of 300mA. The component operates within a temperature range of -25°C to 85°C and utilizes a surface-mount 1210 (3225 Metric) package measuring 3.20mm x 2.50mm x 2.00mm. It exhibits an attenuation value of 25dB at frequencies between 90MHz and 160MHz, with a channel resistance of 0.15 ohms.

Feature Summary

• Integrates third-order LC filtering topology for enhanced noise suppression in compact form factors.
• Provides dedicated signal line protection optimized for mobile device data lines.
• Features low DC resistance to minimize signal loss while maintaining effective EMI attenuation.

Applications

• Data lines for mobile devices
• Signal line EMI filtering
• Portable electronic equipment

Procurement Notes

Verify component status as the ACF321825-471-TD01 is listed as obsolete or end-of-life by TDK. Confirm availability through authorized distributors or secondary markets. Ensure compliance with RoHS3 specifications and check for any product change notices (PCN) related to manufacturing updates or discontinuation before finalizing procurement plans.

Selection Notes

Select this component for applications requiring high attenuation in a small 1210 footprint. Consider the 300mA current rating and 20V voltage limit when designing circuits. Evaluate the specific frequency attenuation profile against system noise requirements. Verify compatibility with surface mount assembly processes and ensure adequate thermal management within the specified operating temperature range.

Part Context

This part belongs to the TDK ACF series of multi-layer chip filters. These components are engineered for EMC suppression in portable electronics. The ACF series combines inductance and capacitance elements on a single substrate to achieve steep roll-off characteristics. This specific model targets high-frequency noise reduction in data transmission lines where space is constrained.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Consult TDK technical support for recommended alternatives or updated series replacements due to the obsolete status of this specific model number.