EMI Noise Filter KNF 21/32 Series / Signal Line Use

EMI Noise Filter
KNF 21/32 Series / Signal Line Use
HOW TO ORDER
Part Number
KNF 32
1
2
050 -W 3
3
4 5
1 Series
2 Size: 21=2012 (0805); 32=3216 (1206)
3 Type (Freq.): 025 – 25MHz, 050 – 50MHz
100 –100MHz, 200 – 200MHz
400 – 400MHz
4 Taping Direction (W, X)
W (STD)
X
5 Quantity Per Reel: 3 – 3000p (Std.)
FEATURES
• Distributed constant type LC filter. Prevents ringing caused
by circuit impedance. Suitable for high speed digital circuits
and visual line circuits.
• Stable noise attenuation over wide frequency ranges.
• Low profile (H = 1.0mm max.) suitable for miniature electronic
equipment.
• First class auto-placement.
DIMENSIONS
A
3
Input
Directional
Mark 1
APPLICATIONS
1 : INPUT
• PCs, Laser Printers, Clock Data Lines for LCD Display
• High Speed Video Signal Circuits and Interface Circuits
• High Speed Digital Circuits
• Anti-Noise Solution
Achieves effective noise suppression in noisy high speed
circuits without signal waveform distortion.
Cut off
Frequency
(MHz)
Capacitance
(pF)
Attenuation
(dB)
C
2 : OUTPUT
D
3 : GROUND
millimeters (inches)
A
SPECIFICATIONS
Part Number
2 B
Rated
Current
(A)
Rated
Voltage
(V)
KNF 21
KNF 32
2.00 (0.079)
3.20 (0.126)
B
1.25 (0.049)
1.60 (0.063)
C
0.80 (0.031)
1.00 (0.039)
D
0.40 (0.016)
0.60 (0.024)
KNF21050
50
130
20 (350-850) MHz
0.15
25
KNF21100
100
65
20 (450-950) MHz
0.15
25
KNF21200
200
33
20 (700-1200) MHz
0.15
25
KNF21400
400
17
20 (900-1400) MHz
0.15
25
KNF32025
25
235
20 (200-600) MHz
0.20
25
KNF32050
50
130
20 (350-850) MHz
0.20
25
GND
KNF32100
100
65
20 (450-950) MHz
0.20
25
Equivalent Circuit
KNF32200
200
33
20 (600-1100) MHz
0.20
25
OUT
IN
EMI Noise Filter
KNF 21/32 Series / Signal Line Use
PERFORMANCE CHARACTERISTICS
KNF 21 SERIES
10
-10
-20
100MHz
50MHz
-30
200MHz
0
Attenuation (dB)
Attenuation (dB)
0
KNF 32 SERIES
10
400MHz
200MHz
100MHz
-10
-20
50MHz
25MHz
-30
-40
-40
-50
10
20
50
-50
10
100 200
500 1000 2000
Frequency (MHz)
20
50
100 200
500 1000 2000
Frequency (MHz)
LAND PATTERN
TYPICAL EXAMPLE OF SUPPRESSION
U (Via Hole)
Spectrum Attenuation (dB)
KC KNF32050
10
Distributed Parameter Circuit
OUTPUT WAVE FORM
ORIGINAL WAVE FORM
0
Q S
-10
W
R
-20
-30
-40
2V
0
20ns
20ns
2V
100 200 300 400 500
Frequency (MHz)
Foot Print
P
C
Solder Resist
Area
Spectrum Attenuation (dB)
LC FILTER
T
Lumped Parameter Circuit
10
Dimensions: millimeters (inches)
0
74HC04
FILTER
74HC00
-10
T
-20
10MHz
15cm
-30
-40
2V
0
20ns
Measuring Point
100 200 300 400 500
Frequency (MHz)
KNF 21
KNF 32
3.20 (0.126)
4.40 (0.173)
W
1.00 (0.039)
1.40 (0.055)
R
2.30 (0.091)
3.00 (0.118)
C
1.20 (0.047)
2.50 (0.098)
P
0.80 (0.031)
1.20 (0.047)
Q
0.40 (0.016)
0.60 (0.024)
S
0.60 (0.024)
0.60 (0.024)
U
0.30 (0.012) - 0.40 (0.016)
0.50 (0.020)
NOTICE: Specifications are subject to change without notice. Contact your nearest AVX Sales Office for the latest specifications. All statements, information and data
given herein are believed to be accurate and reliable, but are presented without guarantee, warranty, or responsibility of any kind, expressed or implied. Statements or
suggestions concerning possible use of our products are made without representation or warranty that any such use is free of patent infringement and are not recommendations to infringe any patent. The user should not assume that all safety measures are indicated or that other measures may not be required. Specifications are
typical and may not apply to all applications.
USA
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http://www.avxcorp.com
S-EMI21/325M499-N