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SMD Inductors(Coils)
For Power Line(Wound, Magnetic Shielded)
VLM Series VLM10555-2
FEATURES
• Low loss and large current capability design.
• High magnetic shield construction should actualize high resolu-
tion for EMC protection.
• Available for automatic mounting in tape and real package.
APPLICATIONS
Note book type and mobile computers, amusement equipment,
DVD players, VRMs, plasma displays, etc.
ELECTRICAL CHARACTERISTICS
Inductance
Part No.
(µH)
VLM10555T-1R8M8R8-2
1.8
VLM10555T-2R5M8R0-2
2.5
VLM10555T-3R3M7R2-2
3.3
VLM10555T-4R3M7R2-2
4.3
∗
Rated current: Value obtained when current flows and the temperature has risen to 40°C or when DC current flows and the nominal value of inductance
has fallen by 30%, whichever is smaller.
TYPICAL ELECTRICAL CHARACTERISTICS
INDUCTANCE CHANGE vs. DC SUPERPOSITION
CHARACTERISTICS
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
0
5
10
DC current ( A )
1.8µH [ at 25˚C ]
2.5µH [ at 25˚C ]
3.3µH [ at 25˚C ]
4.3µH [ at 25˚C ]
• Conformity to RoHS Directive: This means that, in conformity with EU Directive 2002/95/EC, lead, cadmium, mercury, hexavalent chromium, and specific
bromine-based flame retardants, PBB and PBDE, have not been used, except for exempted applications.
• All specifications are subject to change without notice.
Inductance
Test frequency
tolerance
(kHz)
(%)
±20
100
±20
100
±20
100
±20
100
15
20
25
1.8µH [ at 100˚C ]
2.5µH [ at 100˚C ]
3.3µH [ at 100˚C ]
4.3µH [ at 100˚C ]
SHAPES AND DIMENSIONS
1R8M
10.6±0.2
Dimensions in mm
RECOMMENDED PC BOARD PATTERN
2.7
3.9
11.5
Rated current(A)
DC resistance
Based on inductance change
(mΩ)
max.(typ.)
[±15%]
typ.
[at 25°C]
5.6
5.6
18(20)
6.7
6.7
15(17)
8.3
8.3
12(14)
8.3
8.3
9(11)
TEMPERATURE RISE CHARACTERISTICS
60
1.8µH
55
2.5µH
50
3.3µH/4.3µH
45
40
35
30
25
20
15
10
5
0
0
2
4
DC current ( A )
Conformity to RoHS Directive
Dimensions in mm
∗
Based on
temperature rise
typ.
[at 100°C]
14(16)
8.8
12(14)
8
10(12)
7.2
7(9)
7.2
6
8
10
001-03 / 20080822 / e531_vlm10555_2.fm
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12
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