67

092315

Medium Power Film Capacitors

FFHV/FTHV 1500Vdc to 3000Vdc

CALCULATION FORM

SPECIFICATION

CALCULATIONS

Capacitance

C (μF)

Working voltage

Rms current

Frequency

f (Hz)

Ripple voltage

Ur (V)

Ambient temperature

hours

Parasitic inductance

L (nH)

PN

Capacitance

C (μF)

Rated voltage

Serial resistance

between

hot spot and case

Your choice

Maximum ripple voltage

V

The maximum ripple voltage of the selected capacitor must be in any case higher than the ripple voltage of your application

ρ =

Joule losses

W

Dielectric losses

W

Hot spot temperature

°C

The hot spot temperature must be in any case lower than 85°C

LIFETIME EXPECTANCY VS HOT SPOT TEMPERATURE AND VOLTAGE

1.5

1.4

1.3

1.2

1.1

1

0.9

0.8

0.7

100

1,000

10,000

100,000

1,000,000

Lifetime Expectancy (hours)