ACH4518-333-TD01

Overview

The TDK ACH4518-333-TD01 is a third-order LC (T-type) EMI filter circuit designed for signal and DC power lines. It features a capacitance of 0.015 uF, rated for 50 V and 2 A current. The component operates within a frequency range of 11 MHz to 70 MHz with an attenuation of 25 dB. Housed in a compact 1812 (4532 metric) SMD package measuring 4.5 mm x 3.2 mm x 1.8 mm, it supports surface mount technology. The device functions reliably between -25°C and +85°C.

Feature Summary

• Provides superior electromagnetic interference attenuation characteristics through a third-order LC T-type topology.
• Designed as a three-terminal surface-mount component for efficient signal line and DC power line filtering.
• Offers high current handling capability suitable for demanding electronic circuit protection.

Applications

• Signal line filtering in electronic devices
• DC power line noise suppression
• Electromagnetic sensitivity protection for circuits

Procurement Notes

Verify availability status carefully as this specific part number may be discontinued or subject to limited distribution channels. Confirm RoHS compliance details directly with the manufacturer or authorized distributors before procurement planning. Ensure that the required operating temperature range and current ratings align with your specific application requirements to avoid performance issues.

Selection Notes

Select this component when a compact, high-current EMI filter is required for signal integrity. The 1812 footprint allows for space-constrained designs while maintaining robust 2A current capacity. Consider the specific attenuation profile at 11-70 MHz to ensure compatibility with the target noise frequencies. Verify pinout compatibility if replacing existing designs.

Part Context

This component belongs to the TDK ACH series of EMI network filters. These parts are engineered to provide significant footprint reduction while delivering substantial protection against electromagnetic interference. The series utilizes advanced LC topologies to achieve high performance in small surface-mount packages, catering to modern miniaturization trends in electronics manufacturing.

Replacement Considerations

Publicly confirmed substitute part numbers for this specific model were not identified in the provided documentation. Users should consult official TDK resources for potential obsolescence management or direct replacements.

FAQ

What is the maximum current rating for the ACH4518-333-TD01?

The maximum current rating for this component is 2 A.

What type of filter topology does this component use?

It uses a third-order LC (T-type) filter topology.

What is the physical package size of this filter?

The component is housed in an 1812 (4532 metric) surface-mount package.