The B82793C474N215Z97 is a common mode choke manufactured by EPCOS (TDK). Common mode chokes are designed to suppress unwanted common mode noise in electronic circuits. This noise appears equally on multiple lines relative to a common reference (usually ground), and can interfere with proper circuit operation and cause electromagnetic interference (EMI).

Applications:

• Power Supplies: Used to filter common mode noise on AC power input lines.
• USB Ports: Reduces common mode noise on USB data lines to ensure data integrity.
• Data Lines: Filtering noise on various data transmission lines such as Ethernet, HDMI, and other communication interfaces.
• Audio Equipment: To improve audio quality by suppressing noise on audio signal lines.
• Motor Drives: Reduces noise generated by motor drives that can affect sensitive control circuits.

Features:

• High Common Mode Impedance: Provides strong attenuation of common mode noise signals.
• Low Differential Mode Impedance: Minimizes signal distortion on differential signal pairs.
• Compact Design: Allows for easy integration into space-constrained applications.
• RoHS Compliant: Meets environmental regulations regarding hazardous substances.
• High Isolation Voltage: Provides electrical isolation between the windings and the core for safety.

Benefits:

• Improved EMI Performance: Helps electronic devices meet electromagnetic compatibility (EMC) standards.
• Enhanced Signal Integrity: Reduces noise on signal lines, leading to more reliable data transmission.
• Reduced System Noise: Contributes to a quieter and more stable operating environment for electronic equipment.
• Increased System Reliability: Protects sensitive electronic components from noise-induced damage.
• Compliance with Regulations: Helps manufacturers comply with relevant EMI/EMC regulations.

Additional Details:

While specific values vary based on the datasheet, key specifications to consider for the B82793C474N215Z97 are:

• Inductance Value: The inductance of each winding (measured in microhenries or millihenries).
• Common Mode Impedance: The impedance presented to common mode currents (measured in ohms).
• Rated Current: The maximum continuous current the choke can handle without overheating.
• DC Resistance (DCR): The resistance of the windings to DC current (measured in ohms).
• Operating Temperature Range: The range of ambient temperatures within which the choke can operate reliably.

In summary, the B82793C474N215Z97 common mode choke from EPCOS (TDK) is a robust and effective solution for suppressing common mode noise in a wide variety of electronic applications. It contributes to improved EMI performance, enhanced signal integrity, and overall system reliability.