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REMINDERS FOR USING THESE PRODUCTS
Before using these products, be sure to request the delivery specifications.
SAFETY REMINDERS
Please pay sufficient attention to the warnings for safe designing when using these products.
REMINDERS
The storage period is less than 12 months. Be sure to follow the storage conditions (Temperature: 5 to 40°C, Humidity: 10 to 75% RH
or less).
If the storage period elapses, the soldering of the terminal electrodes may deteriorate.
Do not use or store in locations where there are conditions such as gas corrosion (salt, acid, alkali, etc.).
Before soldering, be sure to preheat components.
The preheating temperature should be set so that the temperature difference between the solder temperature and chip temperature
does not exceed 150°C.
Soldering corrections after mounting should be within the range of the conditions determined in the specifications.
If overheated, a short circuit, performance deterioration, or lifespan shortening may occur.
When embedding a printed circuit board where a chip is mounted to a set, be sure that residual stress is not given to the chip due to
the overall distortion of the printed circuit board and partial distortion such as at screw tightening portions.
Self heating (temperature increase) occurs when the power is turned ON, so the tolerance should be sufficient for the set thermal
design.
Carefully lay out the coil for the circuit board design of the non-magnetic shield type.
A malfunction may occur due to magnetic interference.
Use a wrist band to discharge static electricity in your body through the grounding wire.
Do not expose the products to magnets or magnetic fields.
Do not use for a purpose outside of the contents regulated in the delivery specifications.
The products listed on this catalog are intended for use in general electronic equipment (AV equipment, telecommunications
equipment, home appliances, amusement equipment, computer equipment, personal equipment, office equipment, measurement
equipment, industrial robots) under a normal operation and use condition.
The products are not designed or warranted to meet the requirements of the applications listed below, whose performance and/or
quality require a more stringent level of safety or reliability, or whose failure, malfunction or trouble could cause serious damage to
society, person or property.
If you intend to use the products in the applications listed below or if you have special requirements exceeding the range or conditions
set forth in the each catalog, please contact us.
(1) Aerospace/Aviation equipment
(2) Transportation equipment (cars, electric trains, ships, etc.)
(3) Medical equipment
(4) Power-generation control equipment
(5) Atomic energy-related equipment
(6) Seabed equipment
(7) Transportation control equipment
(8) Public information-processing equipment
(9) Military equipment
(10) Electric heating apparatus, burning equipment
(11) Disaster prevention/crime prevention equipment
(12) Safety equipment
(13) Other applications that are not considered general-purpose
applications
When designing your equipment even for general-purpose applications, you are kindly requested to take into consideration securing
protection circuit/device or providing backup circuits in your equipment.
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Product compatible with RoHS directive
Halogen-free
Compatible with lead-free solders
Inductors for Power Circuits
Wound Ferrite
Overview of the VLF-M Series
FEATURES
Magnetic shield type wound inductor for power circuits.
A DC-DC converter with top-class voltage conversion efficiency for similar products was achieved by optimizing the magnetic material
and configuration.
Low-profile product lineup with max. heights of 1.0mm, 1.2mm, and 1.5mm allowing for different usages.
High magnetic shield construction and compatible with high-density mounting.
Halogen-free compatible product.
APPLICATION
Smart phones, tablet terminals, HDDs, SSDs, DVCs, DSCs, mobile display panels, portable game devices, compact power supply
modules, other
PART NUMBER CONSTRUCTION
VLF
Series name
252010
L×W×H Dimensions
(mm max.)
252010
2.5×2.0×1.0
252012
2.5×2.0×1.2
252015
2.5×2.0×1.5
302510
3.0×2.5×1.0
302512
3.0×2.5×1.2
302515
3.0×2.5×1.5
403210
4.0×3.2×1.0
403212
4.0×3.2×1.2
403215
4.0×3.2×1.5
504010
5.0×4.0×1.0
504012
5.0×4.0×1.2
504015
5.0×4.0×1.5
M
internal code
T
T
Packaging style
Taping
-
R47
Inductance
(µH)
R47
0.47
1R5
1.5
220
22
N
Inductance
tolerance
M
±20%
N
±30%
OPERATING TEMPERATURE RANGE, PACKAGE QUANTITY, PRODUCT WEIGHT
Temperature range
Package quantity
Operating
Storage
Type
temperature
temperature
(pieces/reel)
（°C）
（°C）
VLF252010MT
–40 to +105
–40 to +105
2000
VLF252012MT
–40 to +105
–40 to +105
2000
VLF252015MT
–40 to +105
–40 to +105
2000
VLF302510MT
–40 to +105
–40 to +105
2000
VLF302512MT
–40 to +105
–40 to +105
2000
VLF302515MT
–40 to +105
–40 to +105
2000
VLF403210MT
–40 to +105
–40 to +105
1000
VLF403212MT
–40 to +105
–40 to +105
1000
VLF403215MT
–40 to +105
–40 to +105
1000
VLF504010MT
–40 to +105
–40 to +105
1000
VLF504012MT
–40 to +105
–40 to +105
1000
VLF504015MT
–40 to +105
–40 to +105
1000
Operating temperature range includes self-temperature rise.
The Storage temperature range is for after the circuit board is mounted.
Individual weight
（g）
0.017
0.021
0.027
0.026
0.033
0.041
0.048
0.059
0.072
0.073
0.089
0.114
RoHS Directive Compliant Product: See the following for more details related to RoHS Directive compliant products. http://www.tdk.co.jp/rohs/
Halogen-free: Indicates that Cl content is less than 900ppm, Br content is less than 900ppm, and that the total Cl and Br content is less than 1500ppm.
• All specifications are subject to change without notice.
001-01 / 20130516 / e531_vlf.fm
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