13

06/13

All dimensions are given in mm.

Surface-mount device

Symbol

Meaning

Unit





F



e



r







B



i



s





0



a



app



e



i







r



rev







tot



l/A



Cu



Temperature coefficient (TK)

Relative temperature coefficient of material

Temperature coefficient of effective permeability

Relative permittivity

Magnetic flux

Efficiency of a transformer

Hysteresis material constant

Hysteresis core constant

Magnetostriction at saturation magnetization

Relative complex permeability

Magnetic field constant

Relative amplitude permeability

Relative apparent permeability

Relative effective permeability

Relative initial permeability

Relative real (inductive) component of



(for parallel components)

Relative imaginary (loss) component of

 (for parallel components)

Relative permeability

Relative reversible permeability

Relative real (inductive) component of



(for series components)

Relative imaginary (loss) component of

 (for series components)

Relative total permeability

derived from the static magnetization curve

Resistivity

Magnetic form factor

DC time constant



Angular frequency;

= 2 f

1/K

1/K

1/K

Vs

Vs/Am

s

Symbols and terms

Ferrites and accessories