파트넘버.co.kr KNF21050 데이터시트 PDF


KNF21050 반도체 회로 부품 판매점

(KNF Series) EMI Filter



Kyocera 로고
Kyocera
KNF21050 데이터시트, 핀배열, 회로
EMI Filters
(KNF Series)
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 (T=0.85mm max.) suitable for
miniature electronic equipments.
• First class auto-placement
Applications
• PCs, Laser Printers, Cellular Phone, 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
How to Order
KNF 21 050 - W 3
q w e rt
qSeries
wSize EIA
32 :1206
21 :0805
eFrequency
(EIAJ)
(3216)
(2012)
025 25MHz 200
050 50MHz 400
100 100MHz
200MHz
400MHz
rTaping Direction (See Table 1)
W: Standard
tQuantity per Reel
3 3000pcs
Dimensions
Input
Direction
Mark
IN
L
GND
Q
KNF32
L 3.20±0.20
W 1.60±0.20
T 1.00±0.20
Q 0.60±0.30
(Unit : mm)
W
OUT
Specification
Part Number
Cut off
Freq.
(MHz)
KNF32025
25MHz
KNF32050
50MHz
T
KNF32100
100MHz
KNF32200
200MHz
Capacitance
(+50/-20%)
(pF)
20dB Attenuation
(Typical)
Rated
current(mA)
Rated
voltage(VDC)
235pF
200– 600MHz
130pF
65pF
350– 850MHz
450– 950MHz
200mA
33pF
700–1200MHz
KNF21
2.00±0.20
1.25±0.20
0.80±0.15
0.40±0.30
KNF21025
25MHz
235pF
KNF21050
50MHz
130pF
KNF21100
100MHz
65pF
KNF21200
200MHz
33pF
KNF21400
400MHz
Cut off Frequency at Attenuation typical 3dB, Max 6dB
Operating Temperature: -25 to 85(°C)
17pF
200– 600MHz
350– 850MHz
450– 950MHz
700–1200MHz
900–1400MHz
150mA
25VDC
IN OUT
GND
Equivalent Circuit
Frequency Characteristics
KNF32 Series
10
0
-10
KNF32200
-20 KNF32100
-30 KNF32050
KNF32025
-40
-501
10 100 1000
Frequency(MHz)
KNF21 Series
10
0
-10
KNF21025
-20 KNF21050
KNF21100
-30 KNF21200
KNF21400
-40
10000
-501
10 100 1000
Frequency(MHz)
10000


KNF21050 데이터시트, 핀배열, 회로
EMI Filters
(KNF Series)
<Impedance Matching Free>
• Stable attenuation against impedance change
• Good impedance matching without ringing
on distortion even at the time of IC ON/OFF
and pattern layout change
Output wave form(Clock frequency 25MHz)
R LC filter
Test circuit
1M
LVC74
filter
LVC04
25MHz
R
Test point
300
KNF21100
<No Ringing>
Excellent impedance matching
KNF series
Output wave form
LC filter
Output wave form
No filter
Output wave form
• Wide attenuation up to high frequency range
without distortion
Wide attenuation bandwidth
KNF21100
Test circuit
LVC74 filter
25MHz
50mm
Test point
120
100
80 Original
60
Filter passed
40
25 125 225 325 425 525 625 725 825 925
Frequency(MHz)
LC Filter (T-Type)
120
100
Original
80
60
Filter passed
40
25 125 225 325 425 525 625 725 825 925
Frequency(MHz)
Recommended land pattern
Resist
Through Hole
D
Q
(Unit : mm) Packaging specification (Table 1)
• Taping (3,000/reel)
Taping Direction(W)
(Unit : mm)
P
C Conductor
T Resist
TWR CP QS
KNF21 3.20 2.30 1.00 1.20 0.80 0.40 0.60
KNF32 4.40 3.00 1.40 2.50 1.20 0.60 0.60
D
0.3-0.4
0.50
U
2.00
2.40
W(Standard)
4.0
Direction of Feed




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KNF21050 filter

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