ACH4518-222-TD01

Overview

The TDK ACH4518-222-TD01 is a surface-mount EMI filter circuit designed for signal and DC power lines. It utilizes LC (T-type) topology to provide noise suppression. Key electrical parameters include a capacitance of 2200 pF, a voltage rating of 50 V, and a current rating of 2 A. The component operates within a temperature range of -40°C to +125°C. It features a cutoff frequency of 180 MHz and provides attenuation of 25 dB in the 40 MHz to 110 MHz range. The package is 1812 (4532 metric) with SMD/SMT termination.

Feature Summary

• Combines electrostatic discharge protection and noise suppression into a single component
• Provides sharp attenuation characteristics with excellent EMC performance
• Designed for signal line and DC power line filtering applications

Applications

• General purpose electronic circuits requiring EMI/RFI suppression
• DC power line filtering in compact devices
• Signal line noise reduction in consumer electronics

Procurement Notes

Verify component availability as distribution status may vary by region. Confirm RoHS compliance details through official manufacturer documentation prior to integration. Ensure storage conditions align with specified operating temperatures to maintain reliability. Check for end-of-life notices or production change notifications that may affect long-term supply stability.

Selection Notes

Select this component when space-constrained designs require integrated EMI filtering and ESD protection. The 1812 package suits high-density PCB layouts. Verify that the 2 A current rating and 50 V voltage rating meet circuit requirements. Consider the 25 dB attenuation profile for specific frequency bands between 40 MHz and 110 MHz.

Part Context

This part belongs to the TDK ACH series of large current EMI filters. These components are engineered for compact surface-mount applications. The series offers various capacitance values to tailor filtering characteristics. The ACH4518-222-TD01 specifically targets applications needing robust noise suppression in small form factors.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source data. Consult TDK technical support for equivalent recommendations based on specific circuit requirements.