CYNTEC CO., LTD.
乾坤科技股份有限公司
DOCUMENT
: SDEM25201B-000
REVISION
: A6
PAGE
: 1 OF 4
Sealed Choke Coil SDEM25201B type
Features
:
Low profile 2.5 mm x 2.0 mm x 1.2 mm
High performance (Isat) realized by metal dust core.
Low loss realized with low DCR
High magnetic shield construction should actualize high resolution for EMC.
100% lead (Pb) free meet RoHS standard
Application
DC/DC converter for CPU in Notebook PC
Cellular phones, LCD displays, HDDs, DVCs, DSCs, PDAs etc..
VRM for server
Outline Dimensions
W
L
Code
Dimensions(mm)
L
2.0 ± 0.2
W
2.5 ± 0.2
T
1.2 Max.
T
Note
:This graph is in regard to outline dimensions spec. For outer appearance, please refer to actual product.
Recommend Land Pattern Dimensions
The customer shall determine the land dimensions shown below after confirming and safety.
B
A
C
A
2.1
B
0.8
C
2.6
Unit : mm
Sep., 2017
CYNTEC CO., LTD.
乾坤科技股份有限公司
DOCUMENT
: SDEM25201B-000
REVISION
: A6
PAGE
: 2 OF 4
Specifications
Part Number
L0
Inductance
( µH )
@ (0A)
Rdc ( mΩ)
Heat Rating Current
DC Amps. Idc ( A )
Saturation Current
DC Amps. Isat ( A )
Typical
Maximum
Typical
Maximum
Typical
Maximum
SDEM25201B-R47MS
0.47
26.0
32.0
4.50
4.00
5.50
5.00
SDEM25201B-R68MS
0.68
32.0
39.0
3.75
3.45
4.25
3.85
SDEM25201B-1R0MS
1.0
43.0
52.5
3.70
3.35
4.20
3.80
SDEM25201B-1R5MS
1.5
60.0
72.0
2.80
2.55
3.50
2.90
SDEM25201B-2R2MS
2.2
98.0
117.0
2.05
1.85
2.71
2.30
SDEM25201B-3R3MS
3.3
156.0
188.0
1.65
1.45
2.20
2.00
SDEM25201B-4R7MS
4.7
200.0
240.0
1.60
1.45
1.90
1.65
SDEM25201B-100MS
10.0
390.0
450.0
1.00
0.90
1.30
1.00
SDEM25201B-150MS
15.0
640.0
768.0
0.70
0.63
0.90
0.80
SDEM25201B-220MS
22.0
1000.0
1200.0
0.58
0.52
0.76
0.68
:
**:Inductance Tolerance ± 20%
Note 1.: All test data is referenced to 25℃ ambient.
Note 2.: Test Condition:1MHz, 1.0Vrms
Note 3.: Idc : DC current (A) that will cause an approximate △T of 40℃
Note 4.: Isat : DC current (A) that will cause L0 to drop approximately 30%
Note 5.: Operating Temperature Range -55℃ to + 125℃
Note 6.: The part temperature (ambient + temp rise) should not exceed 125℃ under the worst case operating
* If you require another part number please contact with us.
conditions. Circuit design, component placement, PCB trace size and thickness, airflow and other cooling
provision all affect the part temperature. Part temperature should be verified in the end application.
Note 7.
: The rated current as listed is either the saturation current or the heating current depending on which value is
lower.
Sep., 2017
CYNTEC CO., LTD.
乾坤科技股份有限公司
: A6
PAGE
: 3 OF 4
INDUCTANCE(µH)
40
20
0.10
1.0
2.0
3.0
4.0
5.0
DC BIAS(Amps)
6.0
7.0
0.4
INDUCTANCE(µH)
0.3
TEMP. RISE( )
75
1.50
0.80
60
0.60
INDUCTANCE(µH)
45
0.40
TEMP. RISE(
30
0.20
TEMP. RISE( )
℃)
℃
15
0.00
INDUCTANCE(µH)
1.00
3.5
4.0
2.25
1.80
TEMP. RISE(
℃)
0.45
15
0.00
℃
20
℃)
0.0
0.9
1.2
1.5
DC BIAS(Amps)
1.8
2.1
2.4
1.0
1.5
2.0
2.5
DC BIAS(Amps)
3.0
3.5
4.0
90
75
2.80
60
INDUCTANCE(µH)
2.10
TEMP. RISE(
℃)
45
1.40
30
0.70
15
℃
0
10.0
30
INDUCTANCE(µH)
0.5
SDEM25201B-3R3MS
12.0
3.0
0.6
0
60
40
2.0
40
20
70
50
4.0
℃
0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 2.2 2.4
DC BIAS(Amps)
℃
INDUCTANCE(µH)
5.0
℃)
0.00
TEMP. RISE( )
SDEM25201B-4R7MS
0.3
TEMP. RISE(
0.0
0
0.0
0.60
0.00
0.0 0.3 0.6 0.9 1.2 1.5 1.8 2.1 2.4 2.7 3.0 3.3 3.6
DC BIAS(Amps)
TEMP. RISE (
INDCTANCE(µH)
3.50
30
1.0
80
0.90
75
45
100
60
4.20
0.90
6.0
SDEM25201B-1R5MS
1.20
90
60
INDUCTANCE(µH)
1.35
0
4.5
SDEM25201B-2R2MS
2.70
15
)
2.0
2.5
3.0
DC BIAS(Amps)
INDUCTANCE(µH)
1.5
30
0.30
0
1.0
℃
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0
DC BIAS(Amps)
1.80
0.5
45
0.1
90
0.0
℃
)
60
8.0
SDEM25201B-1R0MS
1.20
0.6
0.0
0
0.0
75
TEMP. RISE( )
0.20
℃)
0.7
TEMP. RISE(
TEMP. RISE(
90
SDEM25201B-100MS
80
70
60
8.0
50
INDUCTANCE(µH)
6.0
TEMP. RISE(
℃)
40
30
4.0
20
10
2.0
0
0.0
10
0
0.0
0.2
0.4
0.6
0.8
1.0
1.2
DC BIAS(Amps)
1.4
1.6
℃
TEMP. RISE( )
0.30
INDUCTANCE(µH)
60
℃
TEMP. RISE( )
0.40
SDEM25201B-R68MS
0.8
TEMP. RISE( )
INDUCTANCE(µH)
80
0.00
INDUCTANCE(µH)
REVISION
TEMP. RISE(
100
SDEM25201B-R47MS
0.50
INDUCTANCE(µH)
: SDEM25201B-000
Current Characteristic
0.60
INDUCTANCE(µH)
DOCUMENT
1.8
Sep., 2017
CYNTEC CO., LTD.
乾坤科技股份有限公司
27.0
70
22.5
60
12.0
50
INDUCTANCE(µH)
9.0
TEMP. RISE(
℃)
40
30
6.0
20
3.0
℃
: SDEM25201B-000
REVISION
: A6
PAGE
: 4 OF 4
SDEM25201B-220MS
100
80
18.0
60
INDUCTANCE(µH)
13.5
TEMP. RISE(
℃)
40
9.0
20
4.5
10
0.0
0
0.0
0.2
0.4
0.6
0.8
1.0
DC BIAS(Amps)
1.2
1.4
0.0
0
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
℃
TEMP. RISE( )
15.0
80
INDUCTANCE(µH)
SDEM25201B-150MS
TEMP. RISE( )
INDUCTANCE(µH)
18.0
DOCUMENT
1.1
DC BIAS(Amps)
Sep., 2017
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