I N D U C T O R S
Inductors for power circuits
Wound metal
Cl
Br
Pb
REACH Halogen
Free
Lead
Free
RoHS
SVHC-Free
SPM-LR series
SPM4020-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.
Operating temperature range: –40 to +125 °C (including self-temperature rise)
APPLICATION
Tablet terminals, note PCs, HDDs, servers, VRMs, compact power supply modules, other
Application guides: Smart phones/tablets
PART NUMBER CONSTRUCTION
SPM
4020
T
-
R47
M
-
LR
L×W×H dimensions
4.4×4.1×2.0 mm
Inductance
(µH)
Inductance
tolerance
Series name
Packaging style
Internal code
CHARACTERISTICS SPECIFICATION TABLE
Rated current
L
L measuring
frequency
DC resistance
Part No.
Isat
(A)typ.
14.1
9.0
6.3
5.3
5.0
3.5
2.7
2.3
Itemp
(A)typ.
8.7
5.6
4.7
4.4
3.5
2.5
2.2
(µH)
0.47
1.0
1.5
2.2
3.3
4.7
6.8
10.0
Tolerance
20%
20%
20%
20%
20%
20%
20%
20%
(kHz)
100
100
100
100
100
100
100
100
(m )max.
11.8
28.1
40.0
61.6
(m )typ.
10.7
25.5
36.3
56.0
SPM4020T-R47M-LR
SPM4020T-1R0M-LR
SPM4020T-1R5M-LR
SPM4020T-2R2M-LR
SPM4020T-3R3M-LR
SPM4020T-4R7M-LR
SPM4020T-6R8M-LR
SPM4020T-100M-LR
74.3
67.5
147.2
193.2
284.1
128.0
168.0
247.0
1.8
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 40°C by self heating)
Measurement equipment
Measurement item
L
DC resistance
Rated current Isat
Product No.
4284A
AX-111A
4284A+42841A+42842C
Manufacturer
Keysight Technologies
ADEX
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.
Please note that the contents may change without any prior notice due to reasons such as upgrading.
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inductor_commercial_power_spm4020-lr_en.fm