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TECHNICAL NOTE
ALUMINUM ELECTROLYTIC CAPACITORS
WITH CONDUCTIVE POLYMER SOLID ELECTROLYTE
?
Cautions for Using Aluminum Electrolytic Capacitors With Conductive Polymer Solid Electrolyte
Please be sure to read this specification before using this product.
Before placing an order, please inquire about the Product Specification to check details.
Cautions for Usage
1. Solid conductive polymer aluminum electrolytic
capacitors are polarized.
? Using a capacitor with reversed polarity causes
abnormal current flow, resulting in a short circuit.
? Cannot use for the circuit to which the polarity
reverses by ripple voltage.
2. Prohibited Circuits
? Since leakage current problem may arise, capacitors
cannot be used in the following circuits.
① Coupling circuits
② Circuits greatly affected by leakage current
3. Use capacitors within the rated voltage.
? The application of voltages exceeding the rated
voltage can significantly increase leakage current,
resulting in a short failure. Please do not apply a
voltage exceeding the rated voltage.
4. Be careful of excessive rush current.
? Using capacitors in the circuit where excessive
rush current passes may cause characteristic
deterioration or a short. When the rush current
exceeds 10 A, we recommend use of protection
circuits to ensure high reliability.
5. Use the allowable ripple voltage and the rated
ripple current below the specified values.
? When superimposing a ripple voltage on a DC bias
voltage, exercise care that the peak voltage value
does not exceed the rated voltage and does not
reverse the polarity.
? The rated ripple current shall be below the specified
value.
6. Changes in characteristics due to operating
temperature
? The characteristics of solid conductive polymer
aluminum electrolytic capacitors vary by tempe-
rature as follows. These variations are temporary
and recover when the temperature goes back
(except for the case of characteristic deterioration
because of high temperatures over a long time).
Note that using capacitors over the upper category
temperature increases leakage current, resulting in
a short and destruction.
Be careful of the capacitor temperature considering
not only the ambient temperature where the
equipment is placed and the temperature inside the
equipment but also radiation heat from the heating
element inside the equipment, and self-heat
CAT.No.2008/2009E(2008.10.1)
generation by ripple current.
① Capacitance expressed in the value at 20°C, 120
Hz increases with increased temperature and
decreases with decreasing temperature.
② Tangent of loss angle (tan δ ) expressed in the
value at 20°C, 120 Hz is temperature-independent.
③ Equivalent series resistance (ESR) expressed in
the value at 20°C, 100 kHz is temperature
independent.
④ Leakage current increases with increased
temperature and decreases with decreasing
temperature.
7. Changes in characteristics due to frequency
? The characteristics of solid conductive polymer
aluminum electrolytic capacitors vary by operating
frequency as follows.
① Capacitance expressed in the value at 20°C, 120
Hz decreases with increased frequency.
② Tangent of loss angle (tan δ ) expressed in the
value at 20°C, 120 Hz increases with increased
frequency.
③ Equivalent series resistance (ESR) expressed in
the value at 20°C, 100 kHz increases with
decreasing frequency.
8. Failure modes of solid conductive polymer
aluminum electrolytic capacitors
? The failure modes of solid conductive polymer
aluminum electrolytic capacitors are a wear-out
failure by deterioration of electrical performance and
a random failure by a short. The failure rate level is
0.5%/1,000h at the reliability level of 60% with the
specified voltage applied at 105°C.
? If a short occurs and continues with the application
of a voltage exceeding the rated voltage, increasing
the internal temperature, the internal pressure
increases by vaporization of the cathode material,
which may cause the aluminum case to come off.
9. Operating environments
? Do not use capacitors in an environment directly
exposed to water, saltwater spray, oil spill or
condensation.
? Do not use capacitors in an environment filled with
toxic gas such as hydrogen sulfide, sulfurous acid,
nitrous acid, chlorine, ammonia, etc.
? Do not use capacitors in a place exposed to ozone,
ultraviolet rays, or radiation.
10 . Fumigation Process
NOTE
Design, Speci?cations are subject to change without notice.
Ask factory for technical speci?cations before purchase and/or use.
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