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APPLICATION MANUAL
The operational attentions to the use of the tantalum capacitors are as follows:
- Electrical
- Environmental
- Conditions for mounting on equipment and circuit boards
- Mechanical vibration, shock
If the tantalum capacitors are used without satisfying any one of these conditions, the probability of
short-circuiting, leakage current, ignition or other problems to occur increases. To avoid such
problems, observe the following precautions when using the tantalum capacitors.
● OPERATING VOLTAGE
▶ The voltage derating factor should be as great as possible. Under normal conditions, the operating
voltage should be reduced to 50% or less of the rating. It is recommended that the operating
voltage be 30% or less of the rating, particularly when the tantalum capacitors are used in a low-
impedance circuit (see Figs. 1, 2, and 3).
▶ For circuits in which a switching, charging, discharging, or other momentary current flows, it is
recommended that the operating voltage be 30% or less of the rating, with a resistor connected in
series to limit the current to 300 mA or less.
▶ When the tantalum capacitors are to be used at an ambient temperature of higher than 85℃, the
recommended operating range shown in Fig. 3 should not be exceeded.
Power supply filter
Power
supply
~
circuit
+
+
-
Fig. 1
100
80
60
40
20
0
-55
-40 -20 0 20 40 60
OPERATING TEMPERATURE
Power supply bypass
+
+
-
Fig. 2
85
100 125
Fig. 3
IC
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