Establishments primarily engaged in manufacturing electronic coils, transformers, and inductors. Establishments primarily engaged in manufacturing electrical transformers are classified in Industry 3612; those manufacturing transformers and inductors for telephone and telegraph apparatus are classified in Industry 3661, and those manufacturing semiconductors and related devices are classified in Industry 3674.

• Baluns
• Coil windings, electronic
• Coils, chokes and other inductors, electronic
• Constant impedance transformers
• Coupling transformers
• Flyback transformers
• Transformers, electronic types
• Transformers: power supply electronic type