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A4009_ESW • 1/6/2016

Single-Ended Aluminum Electrolytic Capacitors – ESW Series, +105ºC

Dissipation Factor tan δ (DF)

DissipationFactortanδistheratiobetweentheactiveandreactivepowerforasinusoidalwaveformvoltage.Itcanbethoughtofasa

measurement of the gap between an actual and ideal capacitor.

reactive

active

ideal

actual

δ

Tanδismeasuredwiththesameset-upusedfortheseriescapacitanceESC.

tanδ=ωxESCxESRwhere:

ESC = Equivalent Series Capacitance

ESR = Equivalent Series Resistance

Dissipation Factor vs. Frequency

(typical value)

Frequency (kHz)

Dissipation Factor vs. Temperature

(typical value)

Temperature (°C)