DE1E3KX472MN5AA01 Datasheet, PDF (63/72 Pages) Murata Manufacturing Co., Ltd. – High Voltage Ceramic Capacitors

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High Voltage Ceramic Capacitors !Caution
Continued from the preceding page.
4. Load Reduction and Self-generated Heat During
Application of High-frequency and High-voltage
Due to the low self-heating characteristics of low-
dissipation capacitors, the allowable electric power of
these capacitors is generally much higher than that of B
characteristic capacitors. However, in case the self-
heating temperature is 20°C under a high-frequency
voltage whose peak-to-peak value equals the capacitor's
rated voltage, the capacitor's power consumption may
exceed its allowable electric power.
Therefore, when using the DEA/DEC (SL Char.) /DEH
/DES series in a high-frequency and high-voltage circuit
with a frequency of 1kHz or higher, make sure that the
Vp-p values including the DC bias, do not exceed the
applied voltage value specified in Table 1. Also make
sure that the self-heating temperature (the difference
between the capacitor's surface temperature and the
capacitor's ambient temperature ) at an ambient
temperature of 25°C does not exceed the value specified
in Table 1.
As shown in Fig. 2, the self-heating temperature
depends on the ambient temperature. Therefore, if you
are not able to set the ambient temperature to
approximately 25°C, please contact our sales
representatives or product engineers.
We are offering free software, The Capacitor Selection
Tool: by Voltage Form* which will assist you in selecting
a suitable capacitor.
The software can be downloaded from Murata's Internet
Web site.
(http://www.murata.com/designlib/mmcsv_e.html)
By inputting capacitance values and applied voltage
waveform of the specific capacitor series, this software
will calculate the capacitor's power consumption and list
suitable capacitors.
When the result of this software is different from the
measurement result of the self-heating temperature on
your side, please contact our sales representatives or
product engineers.
* Subject series are below.
· DEA/DEC (SL char.) /DEH/DES/DEF Series
FAILURE TO FOLLOW THE ABOVE CAUTIONS (ITEMS 1
TO 4) MAY RESULT, WORST CASE, IN A SHORT CIRCUIT
AND CAUSE FUMING OR PARTIAL DISPERSION WHEN
THE PRODUCT IS USED.
<Table 1> Allowable Conditions at High-frequency
Series
Allowable Conditions
DC
Temp. _Rated
Char.
Voltage
at High-frequency *3
Applied Self-heating Temp.
Capacitor's
Ambient
Temp. *2
Voltage (Max.) (25°C Ambient Temp.) *1
R 250V 250Vp-p
10°C Max.
C 500V 500Vp-p
20°C Max.
DEH
800Vp-p
1kV
1000Vp-p
1400Vp-p
R 2kV
2000Vp-p
20°C Max.
5°C Max.
20°C Max.
5°C Max.
1600Vp-p
3.15kV
3150Vp-p
20°C Max.
5°C Max.
-25 to +85°C
1kV 1000Vp-p
DEA
SL 2kV 2000Vp-p
5°C Max.
3.15kV 3150Vp-p
DEC
SL 6.3kV 6300Vp-p
5°C Max.
DES
500V 500Vp-p
D
800Vp-p
1kV
1000Vp-p
15°C Max.
5°C Max.
*1 Fig. 1 shows the relationship between the applied voltage and the allowable self-
heating temperature regarding 1 to 3.15kV rated voltage of the DEH series R
characteristic and 1kV rated voltage of the DES series D characteristic.
*2 When the ambient temperature is 85 to 125°C, the applied voltage needs to be
further reduced. If the DEA/DEH/DES series needs to be used at an ambient
temperature of 85 to 125°C, please contact our sales representatives or product
engineers.
*3 Fig. 3 shows reference data on the allowable voltage - frequency characteristics
for a sine wave voltage.
<Fig. 1> Relationship Between Applied Voltage and
Self-heating Temperature (Allowable Self-heating
Temp. at 25°C Ambient Temp.)
DEH Series R Char. (Rated Voltage: DC1kV to 3.15kV)
25
20
15
10
5
0
100
Rated Voltage: 1kV 2kV 3.15kV
1000
Applied Voltage (Vp-p)
10000
11
DES Series D Char. (Rated Voltage: DC1kV)
25
20
15
10
5
Rated Voltage: DC1kV
0
100
1000
Applied Voltage (Vp-p)
10000
Continued on the following page.
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