The ACH4518-222 is a common mode choke from TDK Corporation, designed to suppress electromagnetic interference (EMI) and radio frequency interference (RFI) in electronic circuits. As an EMI/RFI filter, it effectively attenuates unwanted noise signals that can disrupt the performance of sensitive electronic devices. This choke is particularly useful in applications where signal integrity and electromagnetic compatibility are critical.

Applications

• Common mode noise suppression in signal lines
• Noise reduction in USB interfaces
• Noise filtering in audio circuits
• Suppression of EMI in power supplies
• Noise mitigation in automotive electronics

Features

• Compact 4.5 x 1.8 x 1.8 mm size
• High common mode impedance
• Excellent noise suppression characteristics
• Low DC resistance
• Surface mount design for easy integration
• Wide operating temperature range

Benefits

• Improved signal integrity
• Reduced electromagnetic interference
• Enhanced system reliability
• Simplified circuit design
• Compliance with EMC regulations
• Minimized space requirements on PCB

Additional Details

The ACH4518-222 features a ferrite core material that provides high common mode impedance, effectively blocking common mode noise currents while allowing differential mode signals to pass through with minimal attenuation. This is crucial for maintaining signal quality while suppressing unwanted noise. The low DC resistance of the choke minimizes power loss and voltage drop, ensuring efficient operation. The surface mount design allows for easy integration into automated assembly processes, reducing manufacturing costs and improving product quality.

This common mode choke is commonly used in various electronic devices, including computers, smartphones, audio equipment, and automotive electronics. Its compact size and high performance make it an ideal solution for noise suppression in space-constrained applications. Proper placement of the choke on the PCB is crucial for optimal performance.

The ACH4518-222 is compliant with RoHS and REACH regulations, ensuring environmental friendliness.