I N D U C T O R S
Inductors for power circuits
Wound metal
SPM series
Cl
Br
RoHS
REACH
SVHC-Free
Halogen
Free
Pb
Lead
Free
SPM10040XT type
FEATURES
Magnetic shield type wound inductor for power circuits using a metallic magnetic material.
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
Power supply around the CPU, HDDs, servers, VRMs, compact power supply modules, other
Application guides:
Smart phones/tablets
PART NUMBER CONSTRUCTION
SPM
Series name
10040
L×W×H dimensions
11.5×10.0×4.0 mm
X
Internal
code
T
Packaging style
-
R18
Inductance
(µH)
M
Inductance
tolerance
CHARACTERISTICS SPECIFICATION TABLE
L
Measuring
frequency
DC resistance
Rated current
Isat
(A)typ.
46.0
42.0
25.0
21.0
Itemp
(A)typ.
38.0
25.0
22.0
18.0
Part No.
(µH)
Tolerance
(kHz)
(m )max.
(m )typ.
0.18
+/-20%
100
0.55
0.5
0.33
+/-20%
100
1.21
1.1
0.47
+/-20%
100
1.32
1.2
0.68
+/-20%
100
1.65
1.5
Rated current: smaller value of either Isat or Itemp.
Isat: When based on the inductance change rate (20% below the initial value)
Itemp: When based on the temperature increase (temperature increase of 40°C by self heating)
・The
cleaning agent can not be used for these products.
Measurement equipment
Measurement item
Product No.
L
4284A
DC resistance
AX-111A
Rated current Isat
4284A+42841A+42842C
＊
Equivalent measurement equipment may be used.
Manufacturer
Keysight Technologies
ADEX
Keysight Technologies
SPM10040XT-R18M
SPM10040XT-R33M
SPM10040XT-R47M
SPM10040XT-R68M
TEMPERATURE RANGE, INDIVIDUAL WEIGHT
Operating temperature range
Storage temperature range
–40 to +125 °C
–40 to +125 °C
Operating temperature range includes self-temperature rise.
The storage temperature range is for after the assembly.
Individual weight
2.26 g
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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I N D U C T O R S
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.
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 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 (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 pro-
tection circuit/device or providing backup circuits in your equipment.
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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