DF220 查看數據表（PDF） - Murata Manufacturing

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DF220

EMI LEADED FILTERS

Murata Manufacturing 

EMI LEADED FILTERS

EMI SUPPRESSION FILTERS

VARISTOR-CAPACITOR

PART NUMBERING SYSTEM

DSS710

DSS710 Series

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.

D

223S

12 —

22

SERIES

TEMPERATURE

CHARACTERISTICS

CAPACITANCE

AND

TOLERANCE

RATED

VOLTAGE

VARISTOR

VOLTAGE

DIMENSIONS: mm

12.0 max.

7.5 max.

Mounting Holes

2.5 ± 0.2

2.5 max.

F1

F

10.5 max.

25.0 min.

2.5 ± 0.5

0.65

F2 F2 3 x 0.8

F = 5.0 ± 0.5

F1 = 2.5 ± 0.5

F2 = 2.5 ± 0.2

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

Murata Electronics Sales Office.

SPECIFICATIONS

Part Number

Capacitance

DF

‚DSS710 D223 S 12-22

22000pF

+50

–20

%

5.0% max.

Insulation Resistance

1M Ohms min.

IC (max.)

7A

Rated Voltage

12VDC

Varistor Voltage

22VDC ± 20% (V1mA)

Voltage Nonlinear Factor

Temperature Characteristics

Operating Temperature Range

1.25 max. (V10mA/V1mA)

+20

–30

%

(–25°C

to

+85°C)

–40°C to +100°C

Inductance

0.8␮H x 2 (1kHz)

‚Available as standard through authorized Murata Electronics Distributors.

TYPICAL INSERTION LOSS CHARACTERISTICS

0

20

40

60

80

100

0.01 0.05 0.1 0.5 1

5 10 50 100 500 1000

Frequency (MHz)

VOLTAGE – CURRENT CURVE

300

200

100

–40 –30 –20 –10 0 10 20 30 40

–100

–200

–300

Voltage (V) ৎ

CG01-I

257

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