Safety Standard Certified Ceramic Capacitors/High Voltage ... - Murata

!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. Therefore, please approve our product specifi cations or transact the approval sheet for product specifi cations before ordering.C85E.pdfApr.7,2014High Voltage Ceramic Capacitors !Cautionc !Caution (Rating)1. Operating VoltageWhen DC-rated capacitors are to be used in AC or ripplecurrent circuits, be sure to maintain the Vp-p value of theapplied voltage or the Vo-p that contains DC bias withinthe rated voltage range.When the voltage is applied to the circuit, starting orstopping may generate irregular voltage for a transitperiod because of resonance or switching. Be sure to usea capacitor with a rated voltage range that includes theseirregular voltages.When using the low-dissipation DEA (SL Char.) /DEC (SLChar.) /DEH (C, R Char.) /DES (D Char.) series in a highfrequencyand high-voltage circuit, be sure to read theinstructions in item 4.When DC-rated capacitors are to be used in input circuitsfrom commercial power source (AC filter), be sure to useSafety Certified Capacitors because various regulationson withstand voltage or impulse withstand established foreach type of equipment should be taken into consideration.VoltageDC Voltage DC+AC Voltage AC Voltage Pulse Voltage (1) Pulse Voltage (2)PositionalMeasurementV0-p V0-p Vp-p Vp-p Vp-p2. Operating Temperature and Self-generated HeatKeep the surface temperature of a capacitor below theupper limit of its rated operating temperature range. Besure to take into account the heat generated by thecapacitor itself. When the capacitor is used in a highfrequencycurrent, pulse current or similar current, it mayself-generate heat due to dielectric loss. The frequency ofthe applied sine wave voltage should be less than300kHz. The applied voltage load (*) should be such thatthe capacitor's self-generated heat is within 20°C in anatmospheric temperature of 25°C. When measuring, usea thermocouple of small thermal capacity-K of ø0.1mm inconditions where the capacitor is not affected by radiantheat from other components or surrounding ambientfluctuations.Excessive heat may lead to deterioration of thecapacitor's characteristics and reliability.(Never attempt to perform measurement with the coolingfan running. Otherwise, accurate measurement cannotbe ensured.)*Before using the low-dissipation DEA/DEC (SL Char.)/DEH/DES series, be sure to read the instructions initem 4.3. Fail-SafeWhen the capacitor is broken, failure may result in a shortcircuit. Be sure to provide an appropriate fail-safefunction like a fuse on your product if failure could followan electric shock, fire or fume.Continued on the following page.62