(1/2)
002-04 / 20080821 / e531_vlf3014a.fm
• All specifications are subject to change without notice.
SMD Inductors(Coils)
For Power Line(Wound, Magnetic Shielded)
VLF Series VLF3014A
FEATURES
• Mount area: 2.6× 2.8mm
Low profile: 1.4mm 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
RECOMMENDED PC BOARD PATTERN
ELECTRICAL CHARACTERISTICS
∗1
Rated current based on inductance variation: Current when inductance decreases by 30% of the initial value due to direct current superimposed
characteristics
∗2
Rated current based on increasing product temperature: Current when temperature of the product reaches +40°C
∗3
Rated current based on inductance variation: Current when inductance decreases by 10% of the initial value due to direct current superimposed
characteristics
∗4
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
VLF3014AT-1R0N1R8 VLF3014AT-2R2M1R2
Conformity to RoHS Directive
4R7
1.4max.2.8±0.2
2.6±0.2
Dimensions in mm
3.4
2.1
1.2
Dimensions in mm
Part No.
Inductance
[at 1/2 Idc1]
∗4
(µH)
Inductance
tolerance(%)
Test frequency
(kHz)
DC
resistance(Ω)
Rated current(A)
max. typ.
Based on
inductance change
Idc1 max.
∗1
Based on
temperature
rise Idc2 typ.
∗2
Based on
inductance
change Idc3 typ.
∗3
VLF3014AT-1R0N1R8 1 ±30 100 0.048 0.042 2.5 1.8 2.5
VLF3014AT-2R2M1R2 2.2 ±20 100 0.1 0.091 1.7 1.2 1.6
VLF3014AT-3R3M1R0 3.3 ±20 100 0.15 0.13 1.3 1 1.1
VLF3014AT-4R7MR90 4.7 ±20 100 0.2 0.17 1.2 0.9 0.8
VLF3014AT-6R8MR72 6.8 ±20 100 0.31 0.27 1 0.72 0.78
VLF3014AT-100MR59 10 ±20 100 0.46 0.4 0.8 0.59 0.65
VLF3014AT-220MR37 22 ±20 100 1.20 1 0.52 0.37 0.43
0.0
0.2
0.4
0.6
0.8
1.4
1.0
1.2
0.0 0.5 1.0 1.5 2.0 2.5 3.0
Inductance
(
µH
)
DC current
(
A
)
0.0
0.5
1.0
1.5
2.0
3.0
2.5
0.0 0.5 1.0 1.5 2.0
Inductance
(
µH
)
DC current
(
A
)
• 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.
