Ferrites and accessories
Symbols and terms
Symbol
Meaning
Unit
Temperature coefficient (TK)
1/K
1/K
1/K
F
e
r
Relative temperature coefficient of material
Temperature coefficient of effective permeability
Relative permittivity
Magnetic flux
Vs
B
i
Efficiency of a transformer
Hysteresis material constant
mT-1
A–1H–1/2
Hysteresis core constant
s
Magnetostriction at saturation magnetization
Relative complex permeability
0
a
app
e
i
Magnetic field constant
Vs/Am
Relative amplitude permeability
Relative apparent permeability
Relative effective permeability
Relative initial permeability
p'
p"
r
Relative real (inductive) component of (for parallel components)
Relative imaginary (loss) component of (for parallel components)
Relative permeability
rev
s'
s"
tot
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
m–1
mm–1
s
l/A
Cu
Magnetic form factor
DC time constant Cu = L/RCu = AL/AR
Angular frequency; = 2 f
s–1
All dimensions are given in mm.
Surface-mount device
Please read Cautions and warnings and
Important notes at the end of this document.
7
5/23