INDUCTORS
Inductors for power circuits
Cl
Pb
Br
Wound metal
REACH Halogen Lead
RoHS
SVHC-Free Free Free
SPM-LR series
SPM4012-LR type
FEATURES
Magnetic shield type wound inductor for power circuits using a metallic magnetic material.
Low-profile product.
Compared to ferrite wound type inductors, it is possible to achieve large current, low Rdc, and compactness.
Low inductance variance in high-temperature environments with good DC superimposition characteristics.
Metallic magnetic material is used, and the structure has an integrated molded coil, so hum noise is lower than with core adhesive coils.
APPLICATION
Tablet terminals, note PCs, HDDs, servers, VRMs, compact power supply modules, other
Application guides: Smart phones/tablets
PART NUMBER CONSTRUCTION
SPM 4012 T - R47 M - LR
LWH dimensions Inductance Inductance
Series name Packaging style Internal code
4.44.11.2 mm (H) tolerance
CHARACTERISTICS SPECIFICATION TABLE
L L measuring DC resistance Part No.
Rated current
frequency
Isat Itemp
(H) Tolerance (kHz) (m )max. (m )typ. (A)typ. (A)typ.
0.47 20% 100 17.6 16.0 8.5 6.7 SPM4012T-R47M-LR
1.00 20% 100 36.3 33.0 6.4 4.7 SPM4012T-1R0M-LR
1.50 20% 100 65.7 57.1 5.8 3.5 SPM4012T-1R5M-LR
2.20 20% 100 85.4 74.3 4.8 3.1 SPM4012T-2R2M-LR
3.3 20% 100 126.5 110.0 3.5 2.6 SPM4012T-3R3M-LR
4.7 20% 100 196.7 171.0 3.3 1.7 SPM4012T-4R7M-LR
Rated current: smaller value of either Isat or Itemp.
Isat: When based on the inductance change rate (30% below the initial value)
Itemp: When based on the temperature increase (temperature increase of 40C by self heating)
Measurement equipment
Measurement item Product No. Manufacturer
L 4284A Keysight Technologies
DC resistance AX-111A ADEX
Rated current Isat 4284A+42841A+42842C Keysight Technologies
Equivalent measurement equipment may be used.
TEMPERATURE RANGE, INDIVIDUAL WEIGHT
Operating temperature range Storage temperature range Individual weight
40 to +125 C 40 to +125 C 0.10 g
Operating temperature range includes self-temperature rise.
The storage temperature range is for after the assembly.
Please be sure to request delivery specifications that provide further details on the features and specifications of the products for proper and safe use.
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Please note that the contents may change without any prior notice due to reasons such as upgrading.
20180723
inductor_commercial_power_spm4012-lr_en.fmINDUCTORS
SPM4012-LR type
L FREQUENCY CHARACTERISTICS
20.0
4R7M
15.0
3R3M
10.0
2R2M
5.0
1R5M
1R0M
R47M
0.0
0.01 0.1 1 10 100
( )
Frequency MHz
Measurement equipment
Product No. Manufacturer
4294A Keysight Technologies
Equivalent measurement equipment may be used.
INDUCTANCE VS. DC BIAS CHARACTERISTICS
5
4R7M
4
3R3M
3
2R2M
2
1R5M
1R0M
1
R47M
0
0246 8 10 12
DC current (A)
Measurement equipment
Product No. Manufacturer
4284A+42841A+42842C Keysight Technologies
Equivalent measurement equipment may be used.
Please be sure to request delivery specifications that provide further details on the features and specifications of the products for proper and safe use.
(2/4)
Please note that the contents may change without any prior notice due to reasons such as upgrading.
20180723
inductor_commercial_power_spm4012-lr_en.fm
( ) Inductance (H)
Inductance H