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A4018_ELH • 2/10/2016

Snap-In Aluminum Electrolytic Capacitors – ELH Series, +85ºC

Dissipation Factor tan δ (DF)

Dissipation Factor tan δ is the ratio between the active and reactive power for a sinusoidal waveform voltage. It can be thought of as a

measurement of the gap between an actual and ideal capacitor.

reactive

active

ideal

actual

δ

Tan δ is measured with the same set-up used for the series capacitance ESC.

tan δ = ω x ESC x ESR where:

ESC = Equivalent Series Capacitance

ESR = Equivalent Series Resistance

Dissipation Factor vs. Frequency

(typical value)

Frequency (kHz)

Dissipation Factor vs. Temperature

(typical value)

Temperature (°C)