EMC line filters
CN Choke Coils (Hybrid Choke Coils for Current Harmonics/EMI)
Features
• Dual mode suppression, Current harmonics, EMI common
mode voltage.
• Minimized leakage flux, suitable to CRT application.
• Available either Vertical mounting type, or Horizontal mounting
type.
Applications
• Capacitor input type switching power supply having output
up to 150W
• CRTs, Monitors, and TVs
• PCs and peripheral equipment
Specifications
For 100V family
Rated Current
Model
(Arms)
CN28-115-010
CN34-120-008
CN34-130-005
1.6
2.0
3.0
Defferential
Mode Inuctance
(mH)min
8
6.5
4.6
Common Mode
Inductance
(mH)min
1.2
1.2
0.7
DC Resistance
(
Ω
/line)max
0.65
0.41
0.22
Input Power
(Reference)
(W)
120
150
200
Inductance, DC Resistance are expressed by nominal values.
For 200V family
Rated Current
Model
(Arms)
CN28-207-060
CN34-209-040
CN34-212-022
0.7
0.9
1.2
Defferential
Mode Inductance
(mH)min
46.4
35.0
20.6
Common Mode
Inductance
(mH)min
7.2
5.6
3.4
DC Resistance
(
Ω
/line)max
4.3
2.02
1.10
Input Power
(Reference)
(W)
120
150
200
Inductance, DC Resistance are expressed by nominal values.
52
EMC line filters
Common Specifications
Item
Thermal Class
Spec.
Class E 120˚C
Less than 55 K
Others
• Weight : Approx. CN28 / 180g, CN34 / 220g
• Safety : Conforming to IEC950
Temp. Rise
Isolation Voltage line to line
1500 Vrms for 1 minute
CN 34 V - 120 - 008
Insulation Resistance line to line
More than 100 MW at DC500 V
Differential-mode inductance
008 : 8 mH
Rated current
20 : 2.0 A
1: 100 V family
2: 200 V family
Shapes
V: Vertical mounting type
H: Horizontal mounting type
CN Coil
Dimensions • Connections
qCN
28
43max.
,,
,,
,,,,
,,,,
40max.
33max.
5
10
13.5
10
φ1.0
23
[mm]
Impedance vs. Frequency
qTypical
characteristics of CN28-115-010
100k
qCN
34 (Horizontal Mounting Type)
50max.
48max.
Differencial mode
10k
35max.
Impedance (ohm)
1k
Common mode
1
7
7
13.5
41.5
7
7
25
100
[mm]
10
0.01
35max.
qCN
34 (Vertical Mounting Type)
50max.
0.1
1
Frequency (MHz)
10
30
48max.
qTypical
characteristics of CN34H-120-008
10K
7
7
13.5
41.5
7
7
23
8
6
4
Normal mode
Impedance (Ω)
[mm]
2
1K
1
8
6
4
2
CN28 connection diagram
AC Line
CN34 connection diagram
AC Line
Common mode
100
1
8
6
4
2
10
2
4
6
8
1
2
4
6
8
1
2
0.1
1
10
30
Frequency (MHz)
53
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