EMI Filter Array
KNA21 Series
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.
How to Order
KNA 21 400 C18 MA 3T S
①
② ③
④
⑤ ⑥ ⑦
①
Series
②
Size Code
21
150
200
220
C15
C18
C25
MA
UA
2012 (EIA: 0805)
150MHz
200MHz
220MHz
15pF
18pF
25pF
250
300
400
C35
C45
250MHz
300MHz
400MHz
35pF
45pF
③
Cut off Frequency
RoHS Compliant
Applications
• Data Lines for Mobile Phones (LCD
Lines, Video Lines, Bus Lines)
• Bus Lines for Digital Equipment
• Terrestrial Digital TV Broadcasting
Attenuation
(Typical)
Rated Rated Operating
Current Voltage Temperature
−25
to
+85°C
④
Capacitance
Specifications
Part Number
Cut off Capacitance
Frequency (+25/
−20%)
15pF
18pF
45pF
35pF
25pF
18pF
⑤
Application
For Mobile phone
Wide band (1 seg., DVB-H)
T&R: 3000 pcs. (KNA21: Std.)
Std.
KNA21300C15MA3TS
300MHz
KNA21400C18MA3TS
400MHz
KNA21150C45UA3TS
150MHz
KNA21200C35UA3TS
200MHz
KNA21220C25UA3TS
220MHz
KNA21250C18UA3TS
250MHz
•
Storage
800 to 2000MHz (@20dB) 35mA 25VDC
800 to 1000MHz (@20dB) 50mA 25VDC
470 to 1000MHz (@35dB)
1000 to 2500MHz (@25dB)
470 to 1000MHz (@30dB)
1000 to 2500MHz (@20dB)
470 to 1000MHz (@25dB)
1000 to 2500MHz (@20dB)
470 to 1000MHz (@25dB)
1000 to 2500MHz (@20dB)
25mA 25VDC
25mA 25VDC
−25
to
+85°C
25mA 25VDC
25mA 25VDC
⑥
Packaging
3T
S
⑦
Termination
condition
Temperature:
−10
to
+45°C
Humidity: 45 to 75%RH
Dimensions
KNA21xxxMA Series
Input Direction Mark
L
IN
(Unit: mm)
KNA21xxxUA Series
Top/Bottom Mark
L
IN/OUT
Attenuation Characteristics
KNA21xxxMA Series
10
0
KNA21xxxUA Series
10
KNA21220C25UA
0
Attenuation (dB)
−
10
−
20
−
30
−
40
−
50
−
60
10
KNA21200C35UA
KNA21250C18UA
W
W
Attenuation (dB)
−
10
−
20
−
30
KNA21400C18MA
−
40
−
50
−
60
10
KNA21300C15MA
OUT
IN/OUT
P
S
G
T
KNA21150C45UA
CODE
Dimensions
CODE
Dimensions
L
2.0±0.2
P
0.50
W
T
1.25±0.2 0.7±0.15
S
G
0.25±0.1 0.40±0.15
100
1000
10000
100
1000
10000
Frequency (MHz)
Frequency (MHz)
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
KSS [ Kyocera Kinseki Corpotation ]
