Company name of a mention and product name are the trademark of each company or trade mark.
(3) Leakage current
Even when the soldering conditions fall whithin the range of this delivery specifications, leakage current
increases a little on occasion. It also increases a little during high temperature storage, high humidity
storage and temperature cycling with no voltage applied. In cases such as these, leakage current will
decrease by applying voltage under the condition of below the POSCAP's maximum operating temperature.
The speed at which the leakage current is restored is increased by applying voltage when the POSCAP's
temperature is close to the maximum operating temperature.
(4) Applied voltage for designing
(a) Less than 90% of the rated voltage or category voltage is recommended. If the rated voltage is 10V, and
over less than 80% of the rated voltage or category voltage is recommended.
(b) The sum of the DC voltage plus the peak AC voltage shall not exceed the rated voltage or category
voltage.
(c) The sum of the DC voltage plus the negative peak AC voltage shall not allow a voltage reversal.
(5) Reduction of failure stress
When POSCAP is used within the rated voltage , it shows a stable characteristic, but it may be damaged in
a short circuit when an overvoltage, for instance, is applied.
The time to reach the failure mode can be extended by using POSCAP with reduced ambient temperature,
ripple current and applied voltage.
[Failure rate]
¡In the case of the endurance which is 105°C×2,000h.
0.5%/1,000h (Environment temp. : 105°C, Rated voltage or Category voltage applied)
¡In the case of the endurance which is 105°C×1,000h or 125°C×1,000h.
1.0%/1,000h (Environment temp. : 105°C, Rated voltage or Category voltage applied)
¡In the case of the endurance which is 85°C×1,000h.
1.0%/1,000h (Environment temp. : 85°C, Rated voltage applied)
(6) Operating environment restrictions
Do not use the POSCAP in the following environments.
(a) Places where water, salt water or oil can directly fall on it and places where condensation may form.
(b) Places filled with noxious gas for capacitors (hydrogen sulfide, sulforous acid, chlorine, ammonia, etc.).
(c) Places susceptible to ozone,ultraviolet rays and radiation.
(7) Land pattern
When mounting the POSCAP on the PC board, match the POSCAP's land pattern dimension. (See P16.)
(8) Parallel connection
A large amount of ripple current may be applied to the POSCAP when it is used in parallel connection with
another capacitor.
Carefully select the type of capacitor.
(9) Protect circuit
The failure mode of POSCAP is the short mode. When it breaks down, short electric current flows to it.
POSCAP gives off heat by this short current. Do the following consideration in design fully for the safety
because it has a bad influence on the part around POSCAP due to this heat.
: A protection circuit and a protection device are set up, and it is made safer as a system.
: A diffuse circuit and so on is set up, and a safe system is taken so that a machine may
not break down as to the single trouble.
(10) Others
Design circuits after checking the following items.
Electrical characteristics are affected by temperature and frequency fluctuations.
Design circuits after checking the amount of fluctuation.
We are confident that the practical configurations and examples listed in this document will ensure the maximum benefit from the characteristics and
performance features of our products and that these application examples are accurate and reliable. However, we cannot accept any liability for any
problems in connection with industrial property rights and concerning any difficulties arising in the use of these circuits. It should also be noted that as
part of our ongoing policy of product improvement, the specifications given herein may be changed or modified at any time without prior
notice. Copyright, All or portions of this publication are protected against copying or other reproduction.