B64290P0687 Datasheet, PDF (4/7 Pages) TDK Electronics – Ferrites and accessories

Ferrites and accessories
Symbols and terms
Symbol
A
A_e
A_L
A_L1
A_min
A_N
A_R
B
ΔB
Bˆ
ΔBˆ
B_DC
B_R
B_S
C₀
CDF
DF
d
E_a
f
f_cutoff
f_max
f_min
f_r
f_Cu
g
H
Hˆ
H_DC
H_c
h
h/μ_i ²
I
I_DC
ˆI
J
k
k₃
k_3c
L
Meaning
Cross section of coil
Effective magnetic cross section
Inductance factor; A_L = L/N²
Minimum inductance at defined high saturation ( μ_a)
Minimum core cross section
Winding cross section
Resistance factor; A_R = R_Cu/N²
RMS value of magnetic flux density
Flux density deviation
Peak value of magnetic flux density
Peak value of flux density deviation
DC magnetic flux density
Remanent flux density
Saturation magnetization
Winding capacitance
Core distortion factor
Relative disaccommodation coefficient DF = d/μ_i
Disaccommodation coefficient
Activation energy
Frequency
Cut-off frequency
Upper frequency limit
Lower frequency limit
Resonance frequency
Copper filling factor
Air gap
RMS value of magnetic field strength
Peak value of magnetic field strength
DC field strength
Coercive field strength
Hysteresis coefficient of material
Relative hysteresis coefficient
RMS value of current
Direct current
Peak value of current
Polarization
Boltzmann constant
Third harmonic distortion
Circuit third harmonic distortion
Inductance
4 07/14
Unit
mm²
mm²
nH
nH
mm²
mm²
μΩ = 10^–6 Ω
Vs/m², mT
Vs/m², mT
Vs/m², mT
Vs/m², mT
Vs/m², mT
Vs/m², mT
Vs/m², mT
F = As/ V
mm^–4.5
J
s^–1, Hz
s^–1, Hz
s^–1, Hz
s^–1, Hz
s^–1, Hz
mm
A/m
A/m
A/m
A/m
10^–6 cm/A
10^–6 cm/A
A
A
A
Vs/m²
J/K
H = Vs/A