KV Electronics Common-Mode Chokes are dual-winding inductors engineered to highly attenuate common-mode electromagnetic interference (EMI) while passing differential (normal-mode) signals with minimal loss. They are essential components in power line filters, AC-DC converters, and data communication interfaces.

Available in toroidal, through-hole bobbin, and nanocrystalline core configurations, our common-mode chokes provide excellent high-frequency attenuation. Nanocrystalline variants offer superior permeability and insertion loss for demanding applications above 1MHz.

Key Features

• Common-mode inductance: 1mH – 100mH
• Core materials: ferrite, nanocrystalline, amorphous
• Current rating: 0.5A – 30A
• Attenuation: >40dB at 1MHz (nanocrystalline)
• Through-hole and SMD mounting
• Withstanding voltage: 1kV – 3kV AC
• Operating temperature: −40°C to +130°C

Applications

• AC mains EMI filters
• Switching power supply input filters
• Motor drive output filters
• Industrial automation and control
• EV charging equipment