ET10-103 Datasheet, PDF (1/4 Pages) Vishay Siliconix – DC Filter Capacitors

DC Filter Capacitors
ET
Vishay ESTA
RIPPLE
The sum of the peak ripple voltage and the DC voltage
should not exceed the rated voltage. Refer to graph fig.1 for
permissible peak-to-peak ripple voltage as a percentage of
rated voltage for various frequencies.
30
20
TYPE ET
These capacitors are manufactured using a mixed dielectric
material that consists of polyester/polypropylene film and
capacitor tissue. They are impregnated and filled with a
mineral oil. The container is a Synthetic Resin Bonded Paper
tube sealed at both ends with resin assuring hermetic
sealing. The capacitors are terminated with M5 *12 mm
studs or tinned copper wire.
Note
• The impregnant used is a non toxic highly refined, purified and
inhibited mineral oil.
APPLICATIONS
The ET range is specifically designed for high voltage filters
and can be successfully used in the following
applications:
• By-pass
• Coupling
• Filter applications
• X-ray power supplies
• Electrostatic air deaners
TEMPERATURE RANGE
Temperature range is - 55 °C to + 85 °C. Derating is
required for operation at higher temperatures.
TEMPERATURE COEFFICIENT
Capacitance will increase by 2 % per 100 °C temperature
rise.
CAPACITANCE RANGE
0.0005 μF to 2 μF. The tolerance is ± 10 %. Other tolerances
are available on request. Nominal values measured at 1 kHz.
VOLTAGE RANGE
1000 V_DC to 70 000 V_DC
10
0
10
100
1000
10 000
Hz
Fig. 1
POWER FACTOR
The power factor is variable, and is a function of temperature
and frequency see fig. 2. Nominal value < 0.5 % at 20 °C
at 20 °C
2%
Power Factor
vs.
Temperature
1 kHz
1%
50 Hz
0%
- 20 0
40
65 80
Fig. 2
DIELECTRIC RESISTANCE
(Parallel resistance) is indicated by the graph of insulance
(MΩ x μF) vs temperature fig. 3. The insulance (Mɹ x μF) is
nominally 10 000 s at + 20 °C. (Measurements taken after
1 minute with an applied voltage of 500 V)
10⁵
10⁴
10³
Insulance vs. Temperature
10²
Typical Values
- 40
0
40
80
Fig. 3
LIFE EXPECTANCY
ET type capacitors are designed for a life exceptancy of
5000 h at 65 °C. To achieve the same life expectancy at
85 °C derate to 60 % of rated voltage fig. 4.
10⁵
10⁴
10³
10²
50
100
150 °C
Rated Voltage
Fig. 4
Document Number: 13014
Revision: 11-Aug-10
For technical questions, contact: [e-mail]
www.vishay.com
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