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Würth Elektronik High Voltage Common Mode Chokes combine the WE-CMA HV and WE-CMB HV to help engineers reduce conducted EMI in demanding automotive and power-electronics designs. These chokes provide a practical filtering solution for systems that must manage high voltages, switching noise, insulation demands, and EMC compliance pressure. The devices include high-permeability MnZn core material and enhanced insulation structure with plastic case and winding spacer, enabling robust common-mode filtering in compact high-voltage systems. The WE-CMA HV chokes are designed for automotive high-voltage systems, including DC/DC converters, onboard chargers, motor inverters, and automotive power filters. The WE-CMBHV chokes are designed for power-line and general-power-electronics filtering, including input/output filters, motor interference suppression, and common-mode noise filtering in high-voltage AC applications.