ACF321825-223-TD01

Overview

The ACF321825-223-TD01 is a signal line EMI filter from TDK's ACF series, designed for surface mount applications. It utilizes an LC (T-type) topology integrating ferrite chip beads and multilayer ceramic capacitors to provide effective noise suppression. The component operates within a temperature range of -25°C to +85°C and supports a maximum current rating of 300 mA at a rated voltage of 20 V. It delivers an attenuation of 25 dB across the frequency range of 11 MHz to 55 MHz. The device is housed in a compact 1210 (3225 Metric) package with three terminals.

Feature Summary

• Integrates ferrite chip beads and multilayer ceramic capacitors into a single T-type EMC filter structure
• Provides superior attenuation characteristics for effective noise suppression on signal lines
• Designed for surface mount installation in compact electronic assemblies

Applications

• Signal line filtering in mobile devices
• Noise reduction in data transmission circuits
• EMI suppression in portable electronic equipment

Procurement Notes

Verify component status as this specific part number may be discontinued or subject to limited availability. Confirm exact specifications against the official TDK datasheet before integration. Ensure compatibility with existing supply chain constraints and check for authorized distributor channels for genuine units.

Selection Notes

Select this component for applications requiring compact signal line filtering with moderate current handling capabilities. The 1210 package size suits space-constrained designs. Verify that the 300 mA current rating and 20 V voltage limit align with circuit requirements. Consider the specific attenuation profile in the 11 MHz to 55 MHz range for targeted noise frequencies.

Part Context

This component belongs to the TDK ACF series, which specializes in T-type EMC filters combining ferrite beads and MLCCs. These filters are engineered for high-performance noise suppression in small form factors. The series targets modern electronics where space efficiency and signal integrity are critical design parameters.

Replacement Considerations

Public confirmed substitute part numbers were not identified in the provided documentation. Consult TDK technical support or authorized distributors for verified alternatives if this component is unavailable.