CG01-I

257

EMI LEADED FILTERS

EMI SUPPRESSION FILTERS

VARISTOR-CAPACITOR

The DSS710 uses a capacitor element which provides the varistor

function. This varistor-capacitor not only works as a bypass

capacitor but also lets high-voltage surges flow to ground.

The varistor-capacitor used in the DSS710 has a 3-lead structure,

so that its high frequency functions are substantially better than

those of conventional capacitors. Furthermore, it is combined with

ferrite bead to form a T-shaped filter circuit that most effectively

suppresses EMI.

The DSS710 efficiently removes fast-rising transients and

high-frequency EMI above 50 or 60 MHz which conventional

capacitors and varistor-capacitors are incapable of removing.

Varistor-capacitors are used even where conventional EMI-filters

fail. They are self-healing and effective in circuits having

500-600V impulses.

PART NUMBERING SYSTEM

SPECIFICATIONS

DIMENSIONS: mm

0

20

40

60

80

100

0.01 0.05 0.1

0.5

1

5

10

50 100 500 1000

Frequency (MHz)

DSS710

D

223S

12

—

22

SERIES

TEMPERATURE

CAPACITANCE

RATED

VARISTOR

CHARACTERISTICS

AND

VOLTAGE

VOLTAGE

TOLERANCE

TYPICAL INSERTION LOSS CHARACTERISTICS

F

10.5 max.

12.0 max.

2.5 ± 0.5

2.5 ± 0.2

Mounting Holes

F = 5.0 ± 0.5

DSS710 Series

Part Number

Capacitance

22000pF

%

DF

5.0% max.

Insulation Resistance

1M Ohms min.

7 A

Rated Voltage

12VDC

Varistor Voltage

22VDC ± 20% (V1mA)

Voltage Nonlinear Factor

1.25 max. (V10mA/V1mA)

Temperature Characteristics

% (–25°C to +85°C)

Operating Temperature Range

–40°C to +100°C

Inductance

0.8 H x 2 (1kHz)

VOLTAGE – CURRENT CURVE

7.5 max.

F

1

2.5 max.

25.0 min.

3 x 0.8

0.65

Voltage (V)

+50

–20

+20

–30

–40 –30 –20 –10

0

10

20

30 40

300

200

100

–100

–200

–300

Note: Footprint for Bulk and Tape & Reel are different. Consult your local

Murata Electronics Sales Office.