B82790C0105N240

Overview

The B82790C0105N240 is a current-compensated ring core double winding common mode choke manufactured by EPCOS (TDK Electronics). It features a rated inductance range of 0.005 mH to 4.7 mH and supports maximum DC currents from 200 mA to 1000 mA. The component operates with a rated voltage of 42 V AC or 80 V DC. Key electrical specifications include a tolerance of -30% to +50%, a maximum DC resistance of 170 mOhms, and an operating temperature range starting at -40°C.

Feature Summary

• Utilizes a current-compensated ring core construction for effective noise suppression
• Designed for high current handling capabilities without overheating
• Provides low DC resistance to minimize power loss and improve system efficiency

Applications

• Power supplies
• Battery chargers
• Portable devices
• Energy-efficient systems

Procurement Notes

Verify the specific inductance value within the 0.005 mH to 4.7 mH range required for your circuit, as this parameter varies across the series. Confirm the maximum DC current rating matches your application's load to ensure thermal stability. Check that the 170 mOhms maximum DC resistance aligns with your power loss constraints. Ensure the -40°C minimum operating temperature is suitable for your environmental conditions.

Selection Notes

Select this component when designing circuits requiring common mode noise filtering in compact spaces. The ring core design offers high performance for its size. Consider the wide tolerance range (-30% to +50%) during circuit simulation to account for inductance variations. Ensure the selected variant meets the specific current and voltage requirements of your power supply or charger design.

Part Context

This component belongs to the EPCOS common mode choke family, which provides electromagnetic interference (EMI) suppression solutions. These chokes are integral to maintaining signal integrity and compliance in electronic equipment. The product line supports various industrial and consumer applications where reliable noise filtering is critical for stable operation.

Replacement Considerations

Consult official TDK Electronics documentation for verified substitute part numbers within the B82790 series or compatible families. Ensure any replacement maintains identical mounting dimensions and terminal configurations to fit existing PCB layouts.