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003-02 / 20021001 / e9712_acm.fm
EMC Components
ACM Series
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 inductance >1000Ω 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).
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: 90Ω
(4) Number of line
2P:2-line
3P:3-line
(5) Packaging style
T: ø180mm reel taping
TL: ø330mm reel taping
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.
SHAPES AND DIMENSIONS/CIRCUIT DIAGRAMS/RECOMMENDED PC BOARD PATTERNS
2-LINE
2-LINE
ACM2012-2P
ACM2520U-2P
1
3
Ferrite
1
3
1
0.3
Dimensions in mm
Dimensions in mm
4
4.5±0.2
1
1.6
1.2
0.7
0.8
Ferrite
1
4.3
1.5
Insulation
resin
0.7
1.4
0.7
Terminal
electrode
6
5
4
1
2
3
Dimensions in mm
1.2
1.4
1.1
Ferrite
5
3
2.3max.
Terminal
electrode
Insulation
resin
6
2
0.5 0.75 0.5
3.2±0.2
3
1
4
3
1
2
2.3max.
0.65 0.65
2.5±0.2
4
3
0.65 1.4 0.65
BOTTOM VIEW
3-LINE
ACM4532-102-3P
3.2±0.2
0.7
0.9
4
1.5
2-LINE
ACM3225-2P
2
0.9
3
0.5
1
1
0.5
0.4
0.3
0.4
2
0.75 1.1 0.75
0.4
3
1.8max.
0.8
Termination
0.5
0.05
1.2
3
2.5±0.2
Termination
0.4
2
1.0
Wires
4
2
0.4
4
2
1.3max.
1
4
2.0±0.2
1.2±0.2
1
4
2
2.0±0.2
1.5
Dimensions in mm
1.8
2.3
1.8
Dimensions in mm
• All specifications are subject to change without notice.
