B66335 datasheet(7/11 Pages) EPCOS

7 / 11 page

Ferrites and accessories

Symbols and terms

10/24

Symbol

Meaning

Unit

Cross section of coil

mm2

Effective magnetic cross section

mm2

Inductance factor; AL = L/N2

AL1

Minimum inductance at defined high saturation (

≙a)nH

Amin

Minimum core cross section

mm2

Winding cross section

mm2

Resistance factor; AR = RCu/N2

 = 10–6

RMS value of magnetic flux density

Vs/m2, mT

B

Flux density deviation

Vs/m2, mT

Bˆ

Peak value of magnetic flux density

Vs/m2, mT

Bˆ

Peak value of flux density deviation

Vs/m2, mT

BDC

DC magnetic flux density

Vs/m2, mT

Remanent flux density

Vs/m2, mT

Saturation magnetization

Vs/m2, mT

Winding capacitance

F = As/V

CDF

Core distortion factor

mm–4.5

Relative disaccommodation coefficient DF = d/

i

Disaccommodation coefficient

Activation energy

Frequency

s–1, Hz

fcutoff

Cut-off frequency

s–1, Hz

fmax

Upper frequency limit

s–1, Hz

fmin

Lower frequency limit

s–1, Hz

Resonance frequency

s–1, Hz

fCu

Copper filling factor

Air gap

RMS value of magnetic field strength

A/m

Hˆ

Peak value of magnetic field strength

A/m

HDC

DC field strength

A/m

Coercive field strength

A/m

Hysteresis coefficient of material

10–6 cm/A

i2

Relative hysteresis coefficient

10–6 cm/A

RMS value of current

IDC

Direct current

Iˆ

Peak value of current

Polarization

Vs/m2

Boltzmann constant

J/K

Third harmonic distortion

k3c

Circuit third harmonic distortion

Inductance

H = Vs/A

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