www.sumida.com

1

Nov-2010

1.85

7.65

COMMON MODE CHOKE COILS

CPFC8D55/MS

Features

1CT:1CT turn ratio Single CMC Coils.

Reduces radiated EMI emissions.

Suppress common mode noise for EMI reduction

Mechanical Dimension & Recommended General PCB Layout.

Unspecified Tolerance is 0.25/ [±0.01]

Unit: mm / [Inches]

Electrical Specifications @25

℃

℃

℃

℃

INDUCTANCE

COMMON MODE ATTENUATION

D.C.R (1-2) ※ RATED

CURRENT

HI-POT

(1,4)-(2,3)

SPEC

100kHz

100kHz

1MHz

10MHz

(3+4)tie

0.5mA,2 Second

CPFC8D55-471 0.47mH (Typ) 10dB(Typ.)

20dB(Typ.)

24dB(Typ.)

0.13Ω Max.

1.6A Max.

AC 500Vrms

CPFC8D55-472 4.7mH (Typ)

28dB(Typ.)

40dB(Typ.)

35dB(Typ.)

1.0Ω Max.

0.4A Max.

AC 500Vrms

CPFC8D55-902 9.0mH (Typ)

35dB(Typ.)

45dB(Typ.)

35dB(Typ.)

1.6Ω Max.

0.3A Max.

AC 500Vrms

Outline

It is a signal common mode choke coils, widely used in LAN & communication devices.

CPF C8 D55 /MS

C MC

AT TEN UAT IO N

-60

-55

-50

-45

-40

-35

-30

-25

-20

-15

-10

-5

0

0.01

0.1

1

10

100

Freq.(MHz)

AT

T.

(d

B)

CPFC8D55-471

CPFC8D55-472

CPFC8D55-902