• All specifications are subject to change without notice.
(1/2)
001-03 / 20050904 / e531_vlf3012a.fm
Inductors VLF Series VLF3012A Type
For Power Line
SMD
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 resolu-
tion for EMC protection.
• Available for automatic mounting in tape and real package.
• The products do not contain lead and support lead-free solder-
ing.
APPLICATIONS
DVCs, DSCs, PDAs, LCD displays, Cellular phones, HDDs, etc.
SHAPES AND DIMENSIONS
RECOMMENDED PC BOARD PATTERN
ELECTRICAL CHARACTERISTICS
∗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.
• Operating temperature range: –40 to +105°C (Including self-temperature rise)
TYPICAL ELECTRICAL CHARACTERISTICS
INDUCTANCE vs. DC SUPERPOSITIONCHARACTERISTICS
VLF3012AT-1R5N1R2 VLF3012AT-2R2M1R0
4R7
1.2max.
(Include terminal area)
2.8±0.2
2.6±0.2
Dimensions in mm
3.4
2.1
1.2
Dimensions in mm
Part No. Inductance
(µH)
Inductance
tolerance(%)
Test frequency
(kHz)
DC resistance(Ω) Rated current(A)∗
max. typ. Based on inductance
change max.
Based on temperature
rise typ.
VLF3012AT-1R5N1R2 1.5 ±30 100 0.068 0.059 1.2 1.6
VLF3012AT-2R2M1R0 2.2 ±20 100 0.1 0.088 1.0 1.3
VLF3012AT-3R3MR87 3.3 ±20 100 0.13 0.11 0.87 1.2
VLF3012AT-4R7MR74 4.7 ±20 100 0.19 0.16 0.74 0.98
VLF3012AT-6R8MR59 6.8 ±20 100 0.27 0.23 0.59 0.83
VLF3012AT-100MR49 10 ±20 100 0.41 0.36 0.49 0.67
VLF3012AT-150MR41 15 ±20 100 0.62 0.54 0.41 0.54
VLF3012AT-220MR33 22 ±20 100 0.76 0.66 0.33 0.49
VLF3012AT-330MR27 33 ±20 100 1.3 1.1 0.27 0.38
VLF3012AT-470MR22 47 ±20 100 2.2 1.9 0.22 0.29
0.0
0.5
1.0
1.5
2.0
2.5
0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4
Inductance(µH)
DC current(A)
0.0
0.5
1.0
1.5
2.0
2.5
3.0
0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4
Inductance(µH)
DC current(A)
• All specifications are subject to change without notice.
(2/2)
001-03 / 20050904 / e531_vlf3012a.fm
Inductors VLF Series VLF3012A Type
For Power Line
SMD
TYPICAL ELECTRICAL CHARACTERISTICS
INDUCTANCE vs. DC SUPERPOSITIONCHARACTERISTICS
VLF3012AT-3R3MR87 VLF3012AT-4R7MR74
VLF3012AT-6R8MR59 VLF3012AT-100MR49
VLF3012AT-150MR41 VLF3012AT-220MR33
VLF3012AT-330MR27 VLF3012AT-470MR22
TEST CIRCUIT
0
1
2
3
4
5
0.0 0.2 0.4 0.6 0.8 1.0 1.2
Inductance(µH)
DC current(A)
0
2
4
6
8
0.0 0.2 0.4 0.6 0.8 1.0
Inductance(µH)
DC current(A)
0
2
4
6
8
10
0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8
Inductance(µH)
DC current(A)
0
5
10
15
0.0 0.1 0.2 0.3 0.4 0.5 0.6
Inductance(µH)
DC current(A)
0
5
10
15
20
0.0 0.1 0.2 0.3 0.4 0.5 0.6
Inductance(µH)
DC current(A)
0
10
20
30
0.0 0.1 0.2 0.3 0.4
Inductance(µH)
DC current(A)
0
10
20
30
40
50
0.0 0.1 0.2 0.3 0.4
Inductance(µH)
DC current(A)
0
10
20
30
40
50
60
0.00 0.05 0.10 0.15 0.20 0.25 0.30
Inductance(µH)
DC current(A)
1: LCR meter 4285A=100kHz
2: DC constant current
12
A
C=20,000µF
L=0.1H
Sample
