FFV3 datasheet(2/3 Pages) AVX

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HOT SPOT CALCULATION

DC FILTERING

POLYESTER DIELECTRIC

Medium Power Film Capacitors

FFV3 for Low Voltage Applications

°C

105

°C

1.2

1.1

1.0

0.8

0.9

0.7

0.6

0.5

0.4

0.3

100

1000

10000

Lifetime Expectancy (hours)

100000

Capacitance

Irms max.

(I2t)10 shots

(I2t)1000 shots

Rth

Part Number

(µF)

(A)

(A2s)

(m )

(°C/W)

Vndc = 75 V

Vrms = 45 v max

130

370

0.56

5.60

FFV34D0137K--

160

560

0.47

5.00

FFV34D0167K--

Vndc = 100 V

Vrms = 60 v max

250

0.67

6.16

FFV34E0806K--

100

390

0.55

5.42

FFV34E0107K--

Vndc = 160 V

Vrms = 75 v max

180

0.77

6.56

FFV34F0556K--

260

0.66

5.97

FFV34F0656K--

Vndc = 300 V

Vrms = 90 v max

150

2.80

9.58

FFV34H0406K--

230

2.25

8.46

FFV34H0506K--

Vndc = 400 V

Vrms = 105 v max

110

2.93

9.92

FFV34I0306K--

200

2.21

8.41

FFV34I0406K--

LIFETIME EXPECTANCY vs Vw/Vn AND HOT SPOT TEMPERATURE

Capacitance range Cn

30µF to 160µF

Tolerance on Cn

±10%

Rated DC voltage Vndc

75 to 400 V

Dielectric

polyester

ELECTRICAL CHARACTERISTICS

θhot spot = θambient + (Pd + Pt) x (Rth + 7.4)

θhot spot = θcase + (Pd + Pt) x Rth

with

Pd (Dielectric losses) = Q x tg

δ0

⇒ [ 1⁄2 x Cn x (Vpeak to peak)2 x f ] x tgδ0

(see tg

δ0 curves page 3)

Pt (Thermal losses) = Rs x (Irms)2

where

Cn in Farad

Irms in Ampere

f in Hertz

V in Volt

Rs in Ohm

θ in °C

Rth in °C/W

Rth : Rth case/hot spot in °C/W

Vw = Permanent working

or operating DC voltage.

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