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VLF4012AT Datasheet Preview

VLF4012AT Datasheet

SMD Inductors

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(1/2)
SMD Inductors(Coils)
For Power Line(Wound, Magnetic Shielded)
Conformity to RoHS Directive
VLF Series VLF4012A-2
FEATURES
• Miniature size
Mount area: 3.5× 3.7mm
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
3.7±0.3
1.2max.
(Include terminal area)
Dimensions in mm
RECOMMENDED PC BOARD PATTERN
2.9
4.7 Dimensions in mm
ELECTRICAL CHARACTERISTICS
Part No.
Inductance Inductance
(µH) tolerance(%)
Test frequency
(kHz)
DC resistance()
max.
typ.
Rated current(A)
Based on inductance
change max.
Based on temperature
rise typ.
VLF4012AT-3R3M1R0-2
VLF4012AT-4R7MR82-2
3.3
4.7
±20
±20
100
100
0.11 0.095 1.0
0.15 0.12
0.82
1.4
1.2
VLF4012AT-6R8MR74-2
VLF4012AT-100MR50-2
6.8
10
±20
±20
100
100
0.20 0.17
0.23 0.20
0.74
0.5
1.0
0.97
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)
• 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.
001-04 / 20060927 / e531_vlf4012a_2.fm




TDK

VLF4012AT Datasheet Preview

VLF4012AT Datasheet

SMD Inductors

No Preview Available !

www.DataSheet4U.com
TYPICAL ELECTRICAL CHARACTERISTICS
INDUCTANCE vs. DC SUPERPOSITION CHARACTERISTICS
VLF4012AT-3R3M1R0-2
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
0.0 0.2 0.4 0.6 0.8 1.0 1.2
DC current(A)
VLF4012AT-6R8MR74-2
8.0
6.0
4.0
2.0
0.0
0.0
0.2
0.4 0.6
DC current(A)
TEST CIRCUIT
C=20,000µF
A
L=0.1H
21
Sample
1: LCR meter 4285A=100kHz
2: DC constant current
0.8 1.0
VLF4012AT-4R7MR82-2
6.0
5.0
4.0
3.0
2.0
1.0
0.0
0.0 0.2 0.4 0.6 0.8 1.0 1.2
DC current(A)
VLF4012AT-100MR50-2
14
12
10
8
6
4
2
0
0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8
DC current(A)
(2/2)
• All specifications are subject to change without notice.
001-04 / 20060927 / e531_vlf4012a_2.fm


Part Number VLF4012AT
Description SMD Inductors
Maker TDK
Total Page 2 Pages
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