9

SMD Film Capacitors

07/2008

Plates

Aluminium layer deposited by evaporation under vacuum.

Winding

Non inductive - Stacked technology.

Terminations

Four layers: aluminium, brass, nickel, pure tin.

Marking

On packaging only.

Climatic category

55 / 125 / 56

Electrical data

Operating temperature

range

-55 to +125 °C

between 105 and 125 °C a decreasing

factor of 1.25% per degree °C has to be

applied on the rated voltage (D.C. and

A.C.)

Size range

12.06 to 60.54

(customized sizes available upon request)

Capacitance range

1000 pF to 4.7 μF

Capacitance values

E12 series

Capacitance

tolerances

Standard: K = ± 10 % M = ± 20 %;

(J = ±5% available upon request and

review of project/application)

Dissipation factor (tgδ) ≤ 0.8 % (T = 25 ± 5 °C; f = 1 kHz)

Dielectric absorption

0.8%

Insulation resistance

≥ 1 GΩ for C ≤ 0.33 μF

≥ 400 s for C > 0.33 μF

Test conditions:

T = 25 ± 5 °C; charging time: 1 min.

Charging voltage:

Surge voltage test

Maximum dv / dt

Tests and performances

Damp heat

(40°C/93% R.H.; 56 days)

IR ≥ 50% of the limit value

Endurance

IR ≥ 50% of the limit value

Rapid change of

temperature

(1h at -55 °C;1h at

+125 °C; 1000 cycles)

│∆C/C│≤ 5%

IR ≥ limit value

No mechanical damage

Reflow

(as per reflow

recommendations, see

page 14)

│∆C/C│≤ 3%

IR ≥ limit value

No mechanical damage

Bending

(1 to 6 mm deflection)

│∆C/C│≤ 1%

No visible damage on the terminations

(pealing) neither on the body (cracking)

Long term stability

(2 years)

│∆C/C│≤ 3% for sizes ≤ 22.20

│∆C/C│≤ 2% for sizes > 22.20

Reliability

(REF MIL HDBK 217)

Failure rate ≤ 1 Fit

When a capacitor is used in A.C. applications at high frequency,

the consequent internal heating may cause the risk of smoke or

fire. This is due to the high current flowing through the capacitor’s

Equivalent Series Resistance.

The formula to calculate the maximum power [W] dissipated by the

capacitor is the following:

(N: number of significant harmonics)

The formula to calculate the maximum power [W] that can be

dissipated by the capacitor is the following:

hottest contact point - i.e. tracks - whichever is higher, in the worst

operating conditions in °C)

Size

12.06

12.10

18.12

22.20

28.24

H

max

[mm]

1.2

2.1

1.7 2.6

2.3

3.3

4.4

3.5

4.5

5.4

Rth

[°C/W]

175

165

157 151

135

128

122

114

108

103

Size

40.30

50.40

60.54

H

max

[mm]

3.6

4.5

5.5

3.6

4.5

5.7

3.6

4.5

5.7

Rth

[°C/W]

93

88

84

75

70

66

58

55

52

Dissipation (A.C. applications)

i

N

i=

i

i

rms

i

i

N

∑

∑

i=

=

�

�

δ

δ

i

rms

(f

tg

C

f

I

(f

tg

C

f

V

Pc

max

1

2

_

max

1

2

_

max

*

*

2

*

*

2

*

)

=