44

Medium Power Film Capacitors

FFLC

eg: rated voltage 1000V

working voltage 950V

ρ = 0.95 ⇒ lifetime 200,000 hours

@ 70°C hot spot temperature

Please, find a calculation form at the end of the catalog

0.8

0.9

1

.1.1

1.2

1.3

1.4

100

1,000

10,000

100,000

1,000,000

Lifetime Expectancy (hours)

200,000

0.95

Rth1 (°C/W)

Height

Width (mm)

(mm)

100

125

150

175

245

0.56

0.67

0.76

0.82

315

0.41

0.49

0.56

0.6

385

0.3

0.36

0.41

0.44

455

0.25

0.3

0.34

0.37

525

0.2

0.24

0.27

0.3

595

0.17

0.21

0.24

0.26

Low inductance design

available on request

THERMAL RESISTANCES

PARASITIC INDUCTANCE VS SIZE

Rth2 (°C)

Natural air cooling

Forced air cooling >2m/s

Height

Width (mm)

Width (mm)

(mm)

100

125

150

175

100

125

150

175

245

0.47

0.44

0.42

0.40

0.23

0.22

0.21

0.20

315

0.36

0.35

0.33

0.31

0.18

0.17

0.16

0.16

385

0.30

0.28

0.27

0.25

0.15

0.14

0.13

0.13

455

0.25

0.24

0.23

0.22

0.13

0.12

0.11

0.11

525

0.22

0.21

0.20

0.19

0.11

0.10

0.10

0.09

595

0.19

0.18

0.17

0.16

0.10

0.09

0.09

0.08

between hot spot and case

Height

Width (mm)

(mm)

100

125

150

175

245

32

34

35

37

315

34

36

38

40

385

36

39

41

44

455

38

41

44

48

525

40

43

47

51

595

42

46

51

55

Measurement @ 1MHz

For confined area, capacitor working in a closed cabinet, a thermal test

under real conditions is necessary to evaluate the thermal resistance.

under natural convection and forced air