(1/3)
003-02 / 20021001 / e9712_acm.fm
EMC Components
Common Mode Choke Coils for Signal Line
SMD
FEATURES
• Although greatly miniaturized, this wire-wound chip-type filter
maintains the characteristics needed for a common-mode filter.
Greatly effective in suppressing noise. Common-mode induc-
tance >1000
Ω
at 100MHz.
• Almost no affect upon even high speed signals since differential
mode impedance is kept low.
• This series includes both 2-line type and 3-line types. Used for
various types of circuits and noise. TDK has developed in the
world’s smallest size of 2012 type (L2.0xW1.2mm).
APPLICATIONS
• Used for radiation noise suppression for any electronic devices.
• Used to counter common-mode noise affecting signals within
high speed lines.
• USB line for personal computers and peripheral equipment.
• IEEE1394 line for personal computers, DVC, STB, etc.
• LVDS, panel link line for liquid crystal display panels.
ACM Series
PRODUCT IDENTIFICATION
ACM 2012 - 900 - 2P - T
(1)
(2)
(3)
(4)
(5)
(1) Series name
(2) Dimensions L
×
W
2012: 2.0
×
1.2mm
(3) Impedance[at 100MHz]
900: 90
Ω
(4) Number of line
2P:2-line
3P:3-line
(5) Packaging style
T: ø180mm reel taping
TL: ø330mm reel taping
SHAPES AND DIMENSIONS/CIRCUIT DIAGRAMS/RECOMMENDED PC BOARD PATTERNS
2-LINE
2-LINE
ACM2012-2P
ACM2520U-2P
2.0±0.2
1
2
4
1.2±0.2
1
2
4
3
2
3
1
2.0±0.2
1
4
4
3
Ferrite
1.3max.
0.8
2.5±0.2
1.8max.
2
3
0.4
Wires
0.05
Termination
0.3
0.5
Termination
0.4
0.5
0.4
1.2
0.4
0.3
0.75 1.1 0.75
Dimensions in mm
0.5
1
4
1.0
0.4
0.65 1.4 0.65
1.5
BOTTOM VIEW
Dimensions in mm
2-LINE
ACM3225-2P
1
2
Terminal
electrode
Ferrite
0.7
0.7
4
3
0.65 0.65
2.5
±0.2
1
2
Insulation
resin
1.4
4
3
3-LINE
ACM4532-102-3P
1
2
3
Terminal
electrode
Ferrite
1
4.3
1.5
1.6
1.5
1.8
2.3
1.8
Dimensions in mm
1
Dimensions in mm
1.2
6
5
4
0.5 0.75 0.5
3.2±0.2
1
2
3
Insulation
resin
1.2
0.8
0.7
0.7
6
5
4
3.2±0.2
2.3max.
4.5±0.2
2.3max.
3
Dimensions in mm
• All specifications are subject to change without notice.
1.4
1.1
0.9
2
3
1
0.9
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003-02 / 20021001 / e9712_acm.fm
EMC Components
Common Mode Choke Coils for Signal Line
SMD
ELECTRICAL CHARACTERISTICS
ACM Series
Impedance
DC resistance
(
Ω
)typ.[100MHz]
(
Ω
)max.[Per 1line]
∗
90
0.19
ACM2012-900-2P-
ACM2012-121-2P-
120
0.22
ACM2012-201-2P-
200
0.25
ACM2012-361-2P-
360
0.5
ACM2520U-201-2P-
200
0.25
ACM2520U-301-2P-
300
0.3
ACM2520U-451-2P-
450
0.35
ACM2520U-601-2P-
600
0.4
ACM2520U-102-2P-
1000
0.55
ACM3225-800-2P-
80
0.15
ACM3225-161-2P-
160
0.2
ACM3225-271-2P-
270
0.3
ACM3225-102-2P-
1000
0.5
ACM4532-102-3P-
1000
0.6
∗
: Packaging style (T: Taping [ø180mm reel], TL: Taping [ø330mm reel])
Part No.
Rated voltage
Edc(V)max.
20
20
20
20
20
20
20
20
20
20
20
20
20
20
Rated current
Idc(A)max.
0.2
0.2
0.15
0.1
0.3
0.3
0.25
0.25
0.1
0.4
0.35
0.3
0.2
0.2
TYPICAL ELECTRICAL CHARACTERISTICS
IMPEDANCE vs. FREQUENCY CHARACTERISTICS
ACM2012-900-2P
10000
ACM2012-121-2P
10000
ACM2012-201-2P
10000
ACM2012-361-2P
10000
Impedance(
Ω
)
Impedance(
Ω
)
Impedance(
Ω
)
Impedance(
Ω
)
1000
Common mode
1000
Common-mode
1000
Common mode
1000
Common mode
100
100
100
100
10
Differential
mode
10
100
1000
Frequency (MHz)
10
Differential
mode
10
100
1000
Frequency (MHz)
10
Differential
mode
10
100
1000
Frequency (MHz)
10
Differential
mode
10
100
1000
Frequency (MHz)
1
1
1
1
1
1
1
1
ACM2520U-201-2P
10000
1000
Impedance(Ω)
Common mode
100
10
Differential mode
10
100
1000
Frequency(MHz)
ACM2520U-301-2P
10000
1000
Impedance(Ω)
Common mode
100
10
Differential mode
10
100
1000
Frequency(MHz)
ACM2520U-451-2P
10000
1000
Impedance(Ω)
Common mode
100
10
Differential mode
10
100
1000
Frequency(MHz)
ACM2520U-601-2P
10000
1000
100
10
Differential mode
10
100
Frequency(MHz)
1000
1
1
1
1
Impedance(Ω)
Common mode
11
1
1
ACM2520U-102-2P
10000
1000
Impedance(Ω)
100
Common mode
MEASURING CIRCUITS
2-LINE
Common mode
HP4291A
10
Differential mode
1
1
10
100
Frequency(MHz)
1000
Differential mode
HP4291A
• All specifications are subject to change without notice.
(3/3)
003-02 / 20021001 / e9712_acm.fm
EMC Components
Common Mode Choke Coils for Signal Line
SMD
TYPICAL ELECTRICAL CHARACTERISTICS
IMPEDANCE vs. FREQUENCY CHARACTERISTICS
ACM3225-800-2P
ACM3225-161-2P
10000
10000
ACM Series
ACM3225-271-2P
10000
ACM3225-102-2P
1000
Common mode
Impedance(
Ω
)
Impedance(
Ω
)
Impedance(
Ω
)
Impedance(
Ω
)
1000
1000
100
Common mode
1000
Common mode
100
100
Common mode
100
10
Differential
mode
10
100
1000
Frequency (MHz)
10
Differential
mode
10
100
1000
Frequency (MHz)
10
Differential
mode
10
100
1000
Frequency (MHz)
10
Differential mode
1
1
1
1
1
1
1
1
10
100
Frequency (MHz)
1000
ACM4532-102-3P
1000
Common mode
Impedance(
Ω
)
MEASURING CIRCUITS
2-LINE
Common mode
3-LINE
Common mode
100
10
Differential mode
HP4291A
HP4291A
Differential mode
Differential mode
1
1
10
100
Frequency (MHz)
1000
HP4291A
HP4291A
• All specifications are subject to change without notice.
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