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inductor_automotive_power_tfm252012alma_en.fm
INDUCTORS
Inductors for power circuits
Thin-film metal magnetic material
TFM-ALMA series (for automotive)
TFM252012ALMA type
FEATURES
By using metal magnetic material with high Saturation magnetic flux density the excellent DC bias characteristics needed for inductors
for power circuits can be achieved.
With the same product shape and terminal structure as general chip parts it has excellent mounting stability characteristics and can also
be mounted to general-purpose land patterns.
By using a closed magnetic circuit structure leakage flux is minimized.
Compliant with AEC-Q200
APPLICATION
ADAS ECU, in-Vehicle camera (view camera, sensing camera), radar, meter cluster, automotive communication module
Other power supply circuit uses
PART NUMBER CONSTRUCTION
CHARACTERISTICS SPECIFICATION TABLE
 Rated current: smaller value of either Isat or Itemp.
Isat: When based on the inductance change rate (30% below the initial L value)
Itemp: When based on the temperature increase (temperature increase of 40°C by self heating)
Please refer to the graph of Rated current vs. temperature characteristics (derating) about the rating current at 85°C or more in temperature of the product.
Measurement equipment
＊Equivalent measurement equipment may be used.
TEMPERATURE RANGE, INDIVIDUAL WEIGHT
Operating temperature range includes self-temperature rise.
 The storage temperature range is for after the assembly.
TFM 252012 ALM A 1R0 M T AA
Series name L×W×H dimensions Characteristic
type
Automotive
use
Inductance Inductance
tolerance Packaging style Internal code
2.5×2.0×1.2 mm (µH)
LL measuring
frequency
DC resistance Rated currentRated
voltage
Part No.
Isat Itemp
(µH) Tolerance (MHz) (m)max. (m)typ. (A)max. (A)typ. (A)max. (A)typ. (V)max.
0.10 ±20% 1 9 4 10 12 8 12 20 TFM252012ALMAR10MTAA
0.15 ±20% 111 69.0 10 7.3 9.8 20 TFM252012ALMAR15MTAA
0.22 ±20% 1 13 8 8.0 9.0 6.7 8.5 20 TFM252012ALMAR22MTAA
0.33 ±20% 118 13 7.0 7.8 5.7 6.6 20 TFM252012ALMAR33MTAA
0.47 ±20% 1 24 19 5.8 6.5 4.9 5.6 20 TFM252012ALMAR47MTAA
0.68 ±20% 134 26 4.8 5.4 4.1 4.7 20 TFM252012ALMAR68MTAA
1.0 ±20% 1 42 35 4.2 4.7 3.7 4.1 20 TFM252012ALMA1R0MTAA
1.5 ±20% 160 52 3.3 3.9 3.1 3.3 20 TFM252012ALMA1R5MTAA
2.2 ±20% 1 84 75 2.8 3.3 2.6 2.8 20 TFM252012ALMA2R2MTAA
3.3 ±20% 1140 124 2.1 2.5 2.0 2.2 20 TFM252012ALMA3R3MTAA
4.7 ±20% 1 200 180 1.9 2.2 1.6 1.8 20 TFM252012ALMA4R7MTAA
Measurement item Product No. Manufacturer
L 4294A Keysight Technologies
DC resistance Digital Milliohm Meter
Rated current Isat 4285A+42841A+42842C Keysight Technologies
Operating temperature rangeStorage temperature range Individual weight
–55 to +150 °C –55 to +150 °C 35 mg
REACH
SVHC-Free
Lead
Free
RoHS
Pb
Halogen
Free
Br
Cl
AEC-Q200
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Please note that the contents may change without any prior notice due to reasons such as upgrading.
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inductor_automotive_power_tfm252012alma_en.fm
INDUCTORS
TFM252012ALMA type
L FREQUENCY CHARACTERISTICS
Measurement equipment
＊Equivalent measurement equipment may be used.
INDUCTANCE VS. DC BIAS CHARACTERISTICS
Measurement equipment
＊Equivalent measurement equipment may be used.
Product No. Manufacturer
4294A Keysight Technologies
Product No. Manufacturer
4285A+42841A+42842C Keysight Technologies
Inductance(µH)
0.01
0.1
1
10
0.1 1 10 100
Frequency(MHz)
4R7
3R3
2R2
1R5
1R0
R68
R47
R33
R22
R15
R10
DC current(A)
0510
Inductance(µH)
0.01
0.1
1
10
4R7
3R3
2R2
1R5
1R0
R68
R47
R33
R22
R15
R10
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Please note that the contents may change without any prior notice due to reasons such as upgrading.
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INDUCTORS
TFM252012ALMA type
SHAPE & DIMENSIONS
RECOMMENDED LAND PATTERN
RECOMMENDED REFLOW PROFILE
PACKAGING STYLE
REEL DIMENSIONS
TAPE DIMENSIONS
PACKAGE QUANTITY
Dimensions in mm
2.00±0.20
0.60±0.30 0.60±0.30
2.50±0.20
1.20max.
Dimensions in mm
0.7 1.5 0.7
2.0
Ty p e A B K
TFM252012ALMA 2.2 2.7 1.3
Package quantity 3000 pcs/reel
1.0
ø180±2.0
2.0±0.5
ø13±0.2
ø21±0.8
ø60min.
14.4max.
Dimensions in mm
8.4
+2.0
–0.0
8.0±0.3
1.75±0.1
4.0±0.1
4.0±0.1
2.0±0.05
B
A
3.5±0.05
Dimensions in mm
Sprocket
hole 1.5
+0.1
–0
Cavity
K
160min. Taping 200min.
300min.
Drawing direction
Dimensions in mm
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INDUCTORS
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 this products.
The storage period is within 6 months. Be sure to follow the storage conditions (temperature: 5 to 40°C, humidity: 20 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 equip-
ment, home appliances, amusement equipment, computer equipment, personal equipment, office equipment, measurement equip-
ment, 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 qual-
ity 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 (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 pro-
tection circuit/device or providing backup circuits in your equipment.
REMINDERS