VLF4014A Datasheet, PDF (1/1 Pages) TDK Electronics – SMD Inductors(Coils)

(1/1)
SMD Inductors(Coils)
For Power Line(Wound, Magnetic Shielded)
Conformity to RoHS Directive
VLF Series VLF4014A
FEATURES
• Mount area: 3.5× 3.7mm
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
3.7±0.3
1.4max.
Dimensions in mm
RECOMMENDED PC BOARD PATTERN
2.9
4.7
Dimensions in mm
ELECTRICAL CHARACTERISTICS
Part No.
VLF4014AT-4R7M1R1
Inductance
(µH)
4.7
Inductance
tolerance(%)
±20
Test frequency
(kHz)
100
DC resistance(Ω)
max. typ.
0.16
0.14
Rated current(A)^∗
Based on inductance
change max.
1.2
Based on temperature
rise typ.
1.1
VLF4014AT-100MR90
10
±20
100
0.26
0.23
0.9
0.9
∗ _{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.
TYPICAL ELECTRICAL CHARACTERISTICS
INDUCTANCE vs. DC SUPERPOSITION CHARACTERISTICS
VLF4014AT-4R7M1R1
6
5
4
3
2
1
0
0 200 400 600 800 1000 1200 1400 1600
DC current(mA)
VLF4014AT-100MR90
14
12
10
8
6
4
2
0
0
200 400 600 800
DC current(mA)
1000 1200
TEST CIRCUIT
C=20,000µF
A
L=0.1H
2
1
Sample
1: LCR meter 4285A=100kHz
2: DC constant current
• 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_vlf4014a.fm