The ACH3218-101 is a common mode choke from TDK Corporation, engineered to suppress electromagnetic interference (EMI) and radio frequency interference (RFI) noise in electronic circuits. It operates as an LC filter, leveraging inductive reactance to block common mode noise while allowing differential signals to pass through relatively unimpeded. This ensures clean signal transmission and reduces unwanted emissions, contributing to overall system performance and compliance with regulatory standards.

Applications

• Power lines
• Signal lines
• USB interfaces
• Audio circuits
• DC power supply lines

Features

• Compact 3218 (1206) package size for space-saving designs.
• High impedance at relevant noise frequencies.
• Low DC resistance to minimize power loss.
• Excellent common mode noise suppression characteristics.
• Surface mount technology (SMT) for efficient assembly.

Benefits

• Reduced EMI/RFI radiation, leading to compliance with regulatory requirements.
• Improved signal quality by filtering out unwanted noise.
• Enhanced system reliability by preventing noise-related errors.
• Simplified circuit design with integrated noise suppression.
• Minimized power consumption due to low DC resistance.

Additional Details

The TDK ACH3218-101 choke offers a rated current, inductance, and DC resistance detailed in the manufacturer's datasheet. The component is designed for reflow soldering processes. It is often employed in applications requiring noise reduction in data and power lines. The part's characteristics make it suitable for use near noise generating components or sensitive receiver circuits. Selecting appropriate common mode chokes such as the ACH3218-101 greatly helps in meeting EMC requirements. This component is particularly useful in consumer electronics, industrial equipment, and automotive applications. The specific impedance characteristics and frequency response are available in the TDK product documentation. It is RoHS compliant.