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B65646_13 Datasheet, PDF (7/9 Pages) EPCOS – Ferrites and accessories | |||
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Ferrites and accessories
Symbols and terms
Symbol
ïL/Lï
L0ï
LHï
Lpï
Lrevï
Lsï
leï
lNï
Nï
PCuï
Ptransï
PVï
PFï
Qï
Rï
RCuï
Rhï
ïRhï
Riï
Rpï
Rsï
Rthï
RVï
sï
Tï
ïTï
TCï
tï
tvï
tanï ï¤ï
tanï ï¤Lï
tanï ï¤rï
tanï ï¤eï
tanï ï¤hï
tanï ï¤/ïiï
Uï
Ãï
Veï
Zï
Zn
Meaning
Relative inductance changeï
Inductance of coil without coreï
Main inductanceï
Parallel inductanceï
Reversible inductanceï
Series inductanceï
Effective magnetic path lengthï
Average length of turnï
Number of turnsï
Copper (winding) lossesï
Transferrable powerï
Relative core lossesï
Performance factorï
Quality factor (Q = ï·L/Rs = 1/tanï ï¤L)ï
Resistanceï
Copper (winding) resistance (f = 0)ï
Hysteresis loss resistance of a coreï
Rh changeï
Internal resistanceï
Parallel loss resistance of a coreï
Series loss resistance of a coreï
Thermal resistanceï
Effective loss resistance of a coreï
Total air gapï
Temperatureï
Temperature differenceï
Curie temperatureï
Timeï
Pulse duty factorï
Loss factorï
Loss factor of coilï
(Residual) loss factor at H ï® 0ï
Relative loss factorï
Hysteresis loss factorï
Relative loss factor of material at H ï® 0ï
RMS value of voltageï
Peak value of voltageï
Effective magnetic volumeï
Complex impedanceï
Normalized impedance |Z|n = |Z| /N2 ï´ ï¥ (le/Ae)
7 06/13
Unit
Hï
Hï
Hï
Hï
Hï
Hï
mmï
mmï
ï
Wï
Wï
mW/gï
ï
ï
ïï
ïï
ïï
ïï
ïï
ïï
ïï
K/Wï
ïï
mmï
°Cï
Kï
°Cï
sï
ï
ï
ï
ï
ï
ï
ï
Vï
Vï
mm3ï
ïï
ï/mm
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