VLF3012ST-4R7MR91 TDK Corporation, VLF3012ST-4R7MR91 Datasheet
VLF3012ST-4R7MR91
Manufacturer Part Number
VLF3012ST-4R7MR91
Description
INDUCTOR POWER 4.7UH .91A SMD
Manufacturer
TDK Corporation
Series
VLFr
Specifications of VLF3012ST-4R7MR91
Inductance
4.7µH
Tolerance
±20%
Shielding
Shielded
Current
910mA
Current - Temperature Rise
1.3A
Dc Resistance (dcr)
155 mOhm Max
Package / Case
0.118" L x 0.110" W x 0.047" H (3.00mm x 2.80mm x 1.20mm)
Mounting Type
Surface Mount
Operating Temperature
-40°C ~ 105°C
Frequency - Test
1MHz
Applications
Power Line
Maximum Dc Current
0.91 Amp
Maximum Dc Resistance
0.155 Ohms
Dimensions
2.8 mm W x 3 mm L x 1.2 mm H
Operating Temperature Range
- 40 C to + 105 C
Termination Style
SMD/SMT
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Q @ Freq
-
Self Resonant Freq
-
Current - Saturation
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Other names
445-4202-2
SMD Inductors(Coils)
For Power Line(Wound, Magnetic Shielded)
VLF Series VLF3012S
FEATURES
• Miniature size
• Generic use for portable DC to DC converter line.
• High magnetic shield construction should actualize high resolu-
• Available for automatic mounting in tape and real package.
• The products contain no lead and also support lead-free
• It is a product conforming to RoHS directive.
APPLICATIONS
Power souce inductor for mobile devices such as mobile phones,
HDDs, and DSCs
ELECTRICAL CHARACTERISTICS
Part No.
VLF3012ST-1R0N2R0
VLF3012ST-2R2M1R4
VLF3012ST-3R3M1R1
VLF3012ST-4R7MR91
VLF3012ST-6R8MR78
VLF3012ST-100MR59
VLF3012ST-150MR49
VLF3012ST-220MR43
∗
• Operating temperature range: –40 to +105°C (Including self-temperature rise)
TYPICAL ELECTRICAL CHARACTERISTICS
INDUCTANCE vs. DC SUPERPOSITION CHARACTERISTICS
VLF3012ST-1R0N2R0
• Conformity to RoHS Directive: This means that, in conformity with EU Directive 2002/95/EC, lead, cadmium, mercury, hexavalent chromium, and specific
• All specifications are subject to change without notice.
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.
bromine-based flame retardants, PBB and PBDE, have not been used, except for exempted applications.
Mount area: 2.8× 3mm
Low profile: 1.2mm max. height
tion for EMC protection.
soldering.
1.0
0.8
0.6
0.4
0.2
0.0
0
0.5
DC current ( A )
1.0
Inductance
(µH)
1
2.2
3.3
4.7
6.8
10
15
22
1.5
±30
±20
Inductance
tolerance(%)
±20
±20
±20
±20
±20
±20
2.0
Test frequency
(MHz)
1
1
1
1
1
1
1
1
SHAPES AND DIMENSIONS
RECOMMENDED PC BOARD PATTERN
VLF3012ST-2R2M1R4
3.0±0.2
DC resistance(Ω)
max.
0.038
0.072
0.11
0.155
0.22
0.33
0.49
0.74
2.5
2.0
1.5
1.0
0.5
0.0
1.8
3.6
0
0.9
0.2
typ.
0.032
0.060
0.090
0.13
0.18
0.28
0.41
0.61
Dimensions in mm
0.4
0.6
1.2max.
Rated current(A)
Based on inductance
change max.
2.0
1.4
1.1
0.91
0.78
0.59
0.49
0.43
DC current ( A )
Dimensions in mm
0.8
001-03 / 20080821 / e531_vlf3012s.fm
1.0
Conformity to RoHS Directive
∗
1.2
1.4
Based on temperature
rise typ.
2.7
1.9
1.6
1.3
1.1
0.91
0.78
0.63
1.6
(1/2)
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VLF3012ST-4R7MR91 Summary of contents
Page 1
... ELECTRICAL CHARACTERISTICS Inductance Part No. (µH) VLF3012ST-1R0N2R0 1 ±30 VLF3012ST-2R2M1R4 2.2 ±20 VLF3012ST-3R3M1R1 3.3 VLF3012ST-4R7MR91 4.7 VLF3012ST-6R8MR78 6.8 VLF3012ST-100MR59 10 VLF3012ST-150MR49 15 VLF3012ST-220MR43 22 ∗ 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. • ...
Page 2
... DC current ( A ) VLF3012ST-150MR49 0.1 0.2 0.3 0.4 DC current ( A ) TEST CIRCUIT C=20,000µF A L=0. Sample 1: LCR meter 4285A f=1MHz 2: DC constant current • All specifications are subject to change without notice. VLF3012ST-4R7MR91 1.0 1.2 VLF3012ST-100MR59 0.8 VLF3012ST-220MR43 0.5 0 0.2 0.4 0.6 ...