Leaded inductors are components with through hole features and leads attached concentrically to the opposite ends of the inductor cores. They act as resistors to changes in currents and absorb EMI (electromagnetic interference) which could affect the status of electrical circuits in devices.
Leaded inductors are composed of coils wrapped around magnetic cores and store energy in the form of a magnetic field.
They are used to suppress asymmetrical interferences in low-voltage and high-voltage circuits.
With low voltages, they act as continuous circuits to keep the current flowing if there are interferences. With high voltages, they are able to prevent current from flowing due to their high resistance, thus are used to protect the circuit from voltage spikes.
Leaded inductors come in two main categories: