27 / 30 page
1999 Apr 29
105
BC Components
Product specification
Metallized polyester film capacitors
MKT 365/366/367
Example
C
= 330 nF - 63 V used for the voltage signal shown in Fig.27.
Up-p = 40 V; Up = 35 V; T1 = 100 µs; T2 = 200 µs.
The ambient temperature is 35
°C.
Checking the conditions:
1. The peak voltage Up = 35 V is lower than 63 V (DC).
2. The peak-to-peak voltage 40 V is lower than
.
3. The voltage pulse slope dU/dt
= 40 V/100 µs = 0.4 V/µs.
This is lower than 110 V/
µs (see specific reference data for each version).
4. The dissipated power is 16.2 mW as calculated with Fourier terms.
The temperature rise for bmax = 4.5 mm and pitch = 5 mm will be
.
This is lower than 15
°C temperature rise at 35 °C; see Fig.25.
5. Not applicable.
6. Not applicable.
2
2
40V (AC)
×
×
113 U
pp
–
=
16.2 mW
2.5 mW
°C
⁄
---------------------------------
6.5
°C
=
Fig.27 Voltage signal.
handbook, full pagewidth
time
voltage
CBA865
T1
T2
Up
Up-p
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