EMI Filter Array

KNA21 Series

RoHS Compliant

Features

• Distributed constant type LC filter.

Prevents ringing caused by circuit

impedance.

• Stable noise attenuation over wide

frequency range.

• Small and low profile.

• KNA21xxxUA Series realize sharp

attenuation characteristics over the

frequency range from 470MHz for terrestrial

digital TV to 2GHz for mobile phones.

Applications

• Data Lines for Mobile Phones (LCD

Lines, Video Lines, Bus Lines)

• Bus Lines for Digital Equipment

• Terrestrial Digital TV Broadcasting

How to Order

KNA 21 400 C18 MA 3T S

①② ③

④

⑤ ⑥ ⑦

① Series

② Size Code

21

2012 (EIA: 0805)

③ Cut off Frequency

150

150MHz

250

250MHz

200

200MHz

300

300MHz

220

220MHz

400

400MHz

④ Capacitance

C15

15pF

C35

35pF

C18

18pF

C45

45pF

C25

25pF

⑤ Application

MA

For Mobile phone

UA

Wide band (1 seg., DVB-H)

⑥ Packaging

3T

T&R: 3000 pcs. (KNA21: Std.)

⑦ Termination

S

Std.

Specifications

Part Number

Cut off

Frequency

Capacitance

(

+25/ −20%)

Attenuation

(Typical)

Rated

Current

Rated

Voltage

Operating

Temperature

KNA21300C15MA3TS 300MHz

15pF

800 to 2000MHz (@20dB) 35mA 25VDC

−25 to +85°C

KNA21400C18MA3TS 400MHz

18pF

800 to 1000MHz (@20dB) 50mA 25VDC

KNA21150C45UA3TS 150MHz

45pF

470 to 1000MHz (@35dB)

1000 to 2500MHz (@25dB)

25mA 25VDC

−25 to +85°C

KNA21200C35UA3TS 200MHz

35pF

470 to 1000MHz (@30dB)

1000 to 2500MHz (@20dB)

25mA 25VDC

KNA21220C25UA3TS 220MHz

25pF

470 to 1000MHz (@25dB)

1000 to 2500MHz (@20dB)

25mA 25VDC

KNA21250C18UA3TS

250MHz

18pF

470 to 1000MHz (@25dB)

1000 to 2500MHz (@20dB)

25mA 25VDC

•

Storage condition

Temperature:

−10 to +45°C

Humidity: 45 to 75%RH

Dimensions

(Unit: mm)

KNA21xxxMA Series

KNA21xxxUA Series

IN

L

IN/OUT

OUT

IN/OUT

L

PG

Input Direction Mark

Top/Bottom Mark

S

CODE

L

W

T

Dimensions

2.0

±0.2

1.25

±0.2 0.7±0.15

CODE

P

S

G

Dimensions

0.50

0.25

±0.1 0.40±0.15

Attenuation Characteristics

KNA21xxxMA Series

−60

−50

−40

−30

−20

−10

10

10

100

1000

10000

Frequency (MHz)

0

KNA21300C15MA

KNA21400C18MA

KNA21xxxUA Series

10

100

1000

10000

Frequency (MHz)

KNA21250C18UA

KNA21200C35UA

KNA21150C45UA

KNA21220C25UA

−60

−50

−40

−30

−20

−10

10

0

Recommended Land Pattern

(Unit: mm)

Packaging Specification

• Taping

KNA21 : 3,000/ reel: STD.

(Unit: mm)

CODE

A

B

C

D

E

F

G

H

I

J

Dimensions 2.00 0.95 0.75 1.75 0.25 0.25 0.50 1.35 2.45 0.20