EMI Filters
KNH21 Series
Features
• 0805 Size. Rated current up to 6A MAX.
• Effective for filtering noise on power (Vcc)
lines.
How to Order
New P/N
KNH 21 C104 DA 3T
①
①
Series
②
Size
21
2012
47,000pF
470pF
220pF
②
③
④ ⑤
Applications
• PCs, Laser Printers, Cellular Phone,
Power/ Signal Lines for LCD Display,
Office Equipments
• AV Power Supply/ Signal Line, TV, VCR, etc.
• High Current Signal Lines
③
Capacitance
C106
10,000,000pF
C473
C105
1,000,000pF
C471
C104
100,000pF
C221
Pb Free
RoHS Compliant
④
Application
DA
Digital Circuit in General
T&R: 3000 pcs. (Std.)
⑤
Packaging
3T
Dimensions
(Unit: mm)
Specifications
Part Number
KNH21C106DA
KNH21C105DA
KNH21C104DA
KNH21104
New:
KNH21C473DA
Old:
KNH21473
New:
KNH21C471DA
Old:
KNH21471
New:
KNH21C221DA
Old:
KNH21221
New:
Old:
Capacitance
(+50/
−20%)
10,000,000pF
1,000,000pF
100,000pF
47,000pF
470pF
220pF
Rated
Current
6.0A
4.0A
2.0A
2.0A
1.0A
1.0A
Rated
Voltage
6.3VDC
10VDC
25VDC
50VDC
50VDC
50VDC
Temp. Coefficient
of Capacitance
±15%
±15%
±15%
±15%
±60ppm/ °C
±60ppm/ °C
CODE
KNH21
CODE
KNH21
KNH21C106DA
L
2.0±0.2
T
0.85±0.15
1.0±0.15
W
1.25±0.2
G
0.40±0.30
Attenuation Characteristics
10
0
10
KNH21473
KNH21C473DA
KNH21104
KNH21C104DA
KNH21221
KNH21C221DA
KNH21471
KNH21C471DA
Recommended Land Pattern
(Unit: mm)
Packaging Specification
• Taping (3000/ reel)
(Unit: mm)
Attenuation (dB)
20
30
40
50
60
70
80
90
1
KNH21C105DA
KNH21C106DA
10
100
1000
10000
4.0
Frequency (MHz)
<Electrical Characteristics>
• Wide attenuation range including surrounding
circuit.
Attenuation Effect of Power Supply Noise
Spectrum attenuation (dBuV)
Spectrum attenuation (dBuV)
Test Circuit
60
55
50
45
40
35
30
25
125 225 325 425 525 625 725 825 925
FREQ. (MHz)
Filter passed
Original
60
Original
55
50
45
40
35
30
25
125 225 325 425 525 625 725 825 925
FREQ. (MHz)
Filter passed
8.0
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