FFLI_15 datasheet(9/10 Pages) AVX

Part #	FFLI

Description	Medium Power Film Capacitors FFLI 1500V to 3000Vdc RoHS Compliant

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Manufacturer	AVX [AVX Corporation]

Direct Link	http://www.avx.com

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Medium Power Film Capacitors

FFLI 1500V to 3000Vdc (RoHS Compliant)

CALCULATION FORM

Specification

Your choice

Capacitance

C (µF)

PN

Working voltage

Uw (V)

Capacitance

C (µF)

RMS current

Irms (Arms)

Rated voltage

Un (V)

Frequency

f (Hz)

Serial resistance

Rs (m)

Ripple voltage

Ur (V)

Thermal resistance between

hot spot and ambient air

Rth (°C/W)

Ambient temperature



amb (°C)

Lifetime @ Uw, Irms and amb

hours

Parasitic inductance

L (nH)

Calculations

Maximum ripple voltage

Urmax = 0,2 x Un

Urmax =

V

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

Ratio Uw / Un

 = U

w / Un

 =

Joule losses

Pj = Rs x Irms²

Pj =

W

Dielectric losses

Pd = Q x tg0 = Q x 2.10

-4

Pd =

W

Hot spot temperature



HS = amb + (Pj + Pd) x Rth



HS =

°C

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

LIFETIME EXPECTANCY VS HOT SPOT TEMPERATURE AND VOLTAGE

Expected lifetime at hot spot calculated at Uw

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FFLI Datasheet(PDF) 9 Page - AVX Corporation

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