Datasheet

When DC-rated capacitors are to be used in AC or ripple
current circuits, be sure to maintain the Vp-p value of the
applied voltage or the V
0-p which contains DC bias within
the rated voltage range.
When the voltage is applied to the circuit, starting or
stopping may generate irregular voltage for a transit
period because of resonance or switching. Be sure to
use a capacitor with a rated voltage range that includes
these irregular voltages.
When DC-rated capacitors are to be used in input circuits
from commercial power source (AC filter), be sure to use
Safety Recognized Capacitors because various
regulations on withstand voltage or impulse withstand
established for each equipment should be taken into
considerations.
Voltage
Positional
Measurement
DC Voltage DC+AC Voltage AC Voltage Pulse Voltage (1) Pulse Voltage (2)
V0-p V0-p Vp-p Vp-p Vp-p
1. Operating Voltage
Keep the surface temperature of a capacitor below the
upper limit of its rated operating temperature range. Be
sure to take into account the heat generated by the
capacitor itself. When the capacitor is used in a high-
frequency current, pulse current or similar current, it may
have self-generated heat due to dielectric loss. In case of
"High Dielectric Constant Type Capacitors (X7R/X8L/Y5V/
Z5U char.)", applied voltage load should be such that
self-generated heat is within 20 °C under the condition
where the capacitor is subjected at an atmosphere
temperature of 25 °C. Please contact us if self-generated
heat occurs with "Temperature Compensating Type
Capacitors (C0G char.)". When measuring, use a
thermocouple of small thermal capacity -K of ø0.1mm
under conditions where the capacitor is not affected by
radiant heat from other components or wind from
surroundings. Excessive heat may lead to deterioration of
the capacitor's characteristics and reliability. (Never
attempt to perform measurement with the cooling fan
running. Otherwise, accurate measurement cannot be
ensured.)
2. Operating Temperature and Self-generated Heat
Be sure to provide an appropriate fail-safe function on
your product to prevent a second damage that may be
caused by the abnormal function or the failure of our
product.
FAILURE TO FOLLOW THE ABOVE CAUTIONS MAY
RESULT, WORST CASE, IN A SHORT CIRCUIT
AND CAUSE FUMING OR PARTIAL DISPERSION
WHEN THE PRODUCT IS USED.
3. Fail-Safe
■ !Caution (Rating)
!Caution
34
4
!Note
• Please read rating and !CAUTION (for storage, operating, rating, soldering, mounting and handling) in this catalog to prevent smoking and/or burning, etc.
• This catalog has only typical specifications because there is no space for detailed specifications. Therefore, please approve our product specifications or transact the approval sheet for product specifications before ordering.
• This PDF catalog is downloaded from the website of Murata Manufacturing co., ltd. Therefore, it’s specifications are subject to change or our products in it may be discontinued without advance notice. Please check with our
sales representatives or product engineers before ordering.
• This PDF catalog has only typical specifications because there is no space for detailed specifications. Therefore, please approve our product specifications or transact the approval sheet for product specifications before ordering.
!Note
C49E.pdf
10.3.8