(1/2)
SMD Inductors(Coils)
For Power Line(Wound, Magnetic Shielded)
VLF Series VLF3010A-1
FEATURES
• Miniature size
Mount area: 2.6× 2.8mm
Low profile: 1.0mm max. height
• Generic use for portable DC to DC converter line.
• High magnetic shield construction should actualize high resolu-
tion for EMC protection.
• Available for automatic mounting in tape and real package.
• The products contain no lead and also support lead-free
soldering.
• It is a product conforming to RoHS directive.
APPLICATIONS
Power souce inductor for mobile devices such as mobile phones,
HDDs, and DSCs
SHAPES AND DIMENSIONS
Conformity to RoHS Directive
RECOMMENDED PC BOARD PATTERN
2.6±0.2
2.1
3.4
Dimensions in mm
2.8±0.2
1.0max.
Dimensions in mm
ELECTRICAL CHARACTERISTICS
Part No.
VLF3010AT-1R5N1R2-1
VLF3010AT-2R2M1R0-1
VLF3010AT-3R3MR87-1
VLF3010AT-4R7MR70-1
VLF3010AT-6R8MR61-1
VLF3010AT-100MR49-1
VLF3010AT-150MR40-1
VLF3010AT-220MR33-1
∗1
Inductance
[at 1/2 Idc1]
∗2
(µH)
1.5
2.2
3.3
4.7
6.8
10.0
15.0
22.0
Inductance
tolerance
±30%
±20%
±20%
±20%
±20%
±20%
±20%
±20%
Test frequency
(kHz)
100
100
100
100
100
100
100
100
DC resistance(Ω)
max.
0.078
0.12
0.17
0.28
0.39
0.67
0.86
1.5
typ.
0.068
0.10
0.15
0.24
0.34
0.58
0.75
1.3
Rated current
∗1
(A)
Based on inductance
change Idc1 max.
1.2
1.0
0.87
0.70
0.61
0.49
0.40
0.33
1.2
Rated current:The rated current is the smaller of the values given based on the rate of inductance change (30% decrease from the initial value) or the
temperature rise (temperature rise of 40°C caused by the heat generated by the product itself).
∗2
Inductance is at 1/2 Idc1 power distribution. The L vaule at 0A is higher than the guaranteed performance.
• Operating temperature range: –40 to +105°C (Including self-temperature rise)
• 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.
002-03 / 20080629 / e531_vlf3010a_1.fm
4R7
Based on temperature
rise Idc2 typ.
1.5
1.2
1.0
0.82
0.68
0.52
0.46
0.35
(2/2)
TYPICAL ELECTRICAL CHARACTERISTICS
INDUCTANCE CHANGE vs. DC SUPERPOSITION
CHARACTERISTICS
35
30
IMPEDANCE vs. FREQUENCY CHARACTERISTICS
100000
10000
Inductance(
µH
)
25
20
Impedance(
Ω
)
2.2µH
4.7µH
10µH
22µH
1000
22µH
15
10
5
0
0
0.1
0.2
100
4.7µH
10
1
0.6
0.7
0.8
0.1
40
100
1000
Frequency (kHz)
10000
100000
0.3
0.4
0.5
DC current (A)
INDUCTANCE vs. FREQUENCY CHARACTERISTICS
80
70
60
Inductance(
µ
H)
Q vs. FREQUENCY CHARACTERISTICS
50
2.2µH
4.7µH
10µH
22µH
40
2.2µH
4.7µH
10µH
22µH
50
40
30
20
Q
30
20
10
10
0
40
100
1000
Frequency (kHz)
10000
100000
0
40
100
1000
Frequency (kHz)
10000
100000
• Test equipment: YHP4194A IMPEDANCE/GAIN-PHASE ANALYZER(10kHz to 40MHz)
TEST CIRCUIT
C=20,000µF
A
2
Sample
1: LCR meter 4285A=100kHz
2: DC constant current
L=0.1H
1
• All specifications are subject to change without notice.
002-03 / 20080629 / e531_vlf3010a_1.fm
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