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ET

更新时间： 2024-11-05 14:55:43

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DC Filter Capacitors

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ET 数据手册

Vishay ESTA

www.vishay.com

DC Filter Capacitors

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.



100

1000

10 000

Frequency Hz

Fig. 1

TYPE ET

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.

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

(SRBP) tube sealed at both ends with resin assuring

hermetic sealing. The capacitors are terminated with

M5 x 12 mm studs or tinned copper wire.



at 20 °C

Power Factor



vs.

Temperature



2 %



1 kHz



1 %

Note



50 Hz

•

The impregnant used is a non toxic highly refined, purified, and

inhibited mineral oil

0 %

-20

65 80

APPLICATIONS

Fig. 2

The ET range is specifically designed for high voltage filters

and can be successfully used in the following applications:

DIELECTRIC RESISTANCE

(Parallel resistance) is indicated by the graph of insulance

(M x μF) vs. temperature Fig. 3. The insulance (M x μF) is

nominally 10 000 s at + 20 °C. (Measurements taken after

1 minute with an applied voltage of 500 V).

• By-pass

• Coupling

• Filter applications

• X-ray power supplies

• Electrostatic air cleaners

10⁵



10⁴

TEMPERATURE RANGE

Temperature range is -55 °C to +85 °C. Derating is required

for operation at higher temperatures.

10³

10²

Insulance vs. Temperature

Typical Values

-40

TEMPERATURE COEFFICIENT

Fig. 3

Capacitance will increase by 2 % per 100 °C temperature

rise.

LIFE EXPECTANCY

ET type capacitors are designed for a life expectancy of

5000 h at 65 °C. To achieve the same life expectancy at

85 °C derate to 60 % of rated voltage Fig. 4.



CAPACITANCE RANGE

0.0005 μF to 2 μF. The tolerance is 10 %. Other tolerances

are available on request. Nominal values measured at 1 kHz.

10⁵



VOLTAGE RANGE

1000 V_DCto 60 000 V_DC, other values on request.

10⁴



10³



10²

150 °C

Rated Voltage

100

Fig. 4

Revision: 22-Nov-2019

Document Number: 13014

For technical questions, contact: esta@vishay.com

THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT

ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000

12 3 4

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