SCL Series
Frequency K
120 1.0
400 0.8
1k 0.65
10k 0.50
20k 0.45
40k 0.43
100k 0.40
1M 0.35
10
0.01
0.1
1.0
100 1K 10K 100K 1M
FREQUENCY(Hz)
Fi
.4 Correction Coefficient
K
Table.2 Hz VS K
▶ Ripple Voltage
If an excessive ripple voltage is applied to the tantalum capacitors, their internal temperature
rises due to Joule heat, resulting in the detriment of their reliability.
▷ The tantalum capacitors must be used in such a conditions that the sum of the Working Voltage
and ripple voltage peak values does not exceed the rated voltage (Fig. 5)
▷ Ensure that an reverse voltage due to superimposed voltages is not applied to the capacitors.
▷ The maximum permissible ripple voltage varies with the rated voltage. Ensure that ripple voltage does
not exceed the values shown in Figs 6 and 7. If, however, the capacitors are used at a high
temperature, the maximum permissible ripple voltage must be calculated as follows:
Vrms(at 55℃) = 0.7 x Vrms(at 25℃)
Vrms(at 85℃) = 0.5 x Vrms(at 25℃)
Vrms(at 125℃) = 0.3 x Vrms(at 25℃)
