B65813 datasheet(13/16 Pages) EPCOS

13 / 16 page

13 10/22

Please read Cautions and warnings and

Important notes at the end of this document.

Symbol

Meaning

Unit

L/L

Lrev

PCu

Ptrans

RCu

Rh

Rth

T

tan



tan

L

tan

r

tan

e

tan

h

tan

/i

Relative inductance change

Inductance of coil without core

Main inductance

Parallel inductance

Reversible inductance

Series inductance

Effective magnetic path length

Average length of turn

Number of turns

Copper (winding) losses

Transferrable power

Relative core losses

Performance factor

Quality factor (Q =

L/Rs = 1/tanL)

Resistance

Copper (winding) resistance (f = 0)

Hysteresis loss resistance of a core

Rh change

Internal resistance

Parallel loss resistance of a core

Series loss resistance of a core

Thermal resistance

Effective loss resistance of a core

Total air gap

Temperature

Temperature difference

Curie temperature

Time

Pulse duty factor

Loss factor

Loss factor of coil

(Residual) loss factor at H

 0

Relative loss factor

Hysteresis loss factor

Relative loss factor of material at H

 0

RMS value of voltage

Peak value of voltage

Effective magnetic volume

Complex impedance

Normalized impedance |Z|n = |Z| /N2   (le/Ae)

mW/g



K/W



°C

mm3



/mm

Symbols and terms

Ferrites and accessories

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