(1/2)
SMD Inductors(Coils)
For Power Line(Wound, Magnetic Shielded)
Conformity to RoHS Directive
VLF Series VLF3012A
2.6±0.2
SHAPES AND DIMENSIONS
4R7
2.8±0.2
1.2max.
(Include terminal area)
Dimensions in mm
RECOMMENDED PC BOARD PATTERN
1.2
FEATURES
• Miniature size
Mount area: 2.6× 2.8mm
Low profile: 1.2mm max. height
• Generic use for portable DC to DC converter line.
• High magnetic shield construction should actualize high resolution 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.
2.1
3.4
Dimensions in mm
APPLICATIONS
Power souce inductor for mobile devices such as mobile phones,
HDDs, and DSCs
ELECTRICAL CHARACTERISTICS
Part No.
VLF3012AT-1R5N1R2
VLF3012AT-2R2M1R0
VLF3012AT-3R3MR87
VLF3012AT-4R7MR74
VLF3012AT-6R8MR59
VLF3012AT-100MR49
VLF3012AT-150MR41
VLF3012AT-220MR33
VLF3012AT-330MR27
VLF3012AT-470MR22
Inductance
[at 1/2 Idc1]∗2
(µH)
1.5
2.2
3.3
4.7
6.8
10
15
22
33
47
Inductance
tolerance(%)
Test frequency
(kHz)
±30
±20
±20
±20
±20
±20
±20
±20
±20
±20
100
100
100
100
100
100
100
100
100
100
Rated current∗1(A)
Based on inductance
change Idc1 max.
1.2
1.0
0.87
0.74
0.59
0.49
0.41
0.33
0.27
0.22
DC resistance(Ω)
max.
typ.
0.068
0.1
0.13
0.19
0.27
0.41
0.62
0.76
1.3
2.2
0.059
0.088
0.11
0.16
0.23
0.36
0.54
0.66
1.1
1.9
Based on temperature
rise Idc2 typ.
1.6
1.3
1.2
0.98
0.83
0.67
0.54
0.49
0.38
0.29
∗1
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.
∗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)
TYPICAL ELECTRICAL CHARACTERISTICS
INDUCTANCE vs. DC SUPERPOSITION CHARACTERISTICS
VLF3012AT-1R5N1R2
VLF3012AT-2R2M1R0
3.0
2.5
2.0
Inductance(µH)
Inductance(µH)
2.5
1.5
1.0
0.5
0.0
0.0
2.0
1.5
1.0
0.5
0.2
0.4
0.6
0.8
DC current (A)
1.0
1.2
1.4
0.0
0.0
0.2
0.4
0.6
0.8
DC current (A)
1.0
1.2
1.4
• 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_vlf3012a.fm
