Passive Discrete - Inductors

Back to basics (covered in Deciphering Schematics):

Resistors, capacitors, and inductors are primary types of passive discrete components. In their most basic form, they come with two-terminals, through-hole or SMD. The chart below shows the types of inductors:

Inductors are coils with one or more windings of conductive wire wrapped over a medium (air, ferrite, etc.). Current flowing through an inductor induces a magnetic field that serves as a storage of energy (i.e., Eb = -L[ΔI/Δt]). It also generates a counter electromotive force (plus induced current) that restricts the flow of alternating current while allowing direct current to pass through.