SDER031T

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Delta Part No﹒︰SDER031T type
Part Name︰Sealed Choke
Sealed Choke Coil SDER031T type

Features
Low profile：3.0mm x 3.0mm x 1.0mm
Low coil resistance with large currents.
High magnetic shield construction should actualize high resolution for EMC protection.
100% lead (Pb) free meet RoHS standard

Application
Cellular phones, LCD displays, HDDs, DVCs, DSCs, PDAs etc..

Outline Dimensions
W
L
Code
Dimensions (mm)
L
3.0  0.2
W
3.0  0.2
T
1.0 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
2.7
B
1.4
C
3.1
A
Unit : mm
C
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
Specifications
Part Number
SDER031T-1R0MS
SDER031T-2R2MS
SDER031T-4R7MS
SDER031T-6R8MS
SDER031T-100MS
SDER031T-150MS
SDER031T-220MS
L0
Inductance
( H )
@ (0A)
1.0
2.2
4.7
6.8
10.0
15.0
22.0
Rdc (m)
Heat Rating Current
DC Amps. Idc ( A )
Saturation Current
DC Amps. Isat ( A )
Typical
Maximum
Typical
Maximum
Typical
Maximum
67
89
166
249
365
672
708
81
107
199
299
438
807
850
2.60
1.70
1.30
1.05
0.85
0.72
0.60
2.34
1.53
1.17
0.95
0.77
0.64
0.55
2.90
1.60
1.0
0.85
0.75
0.58
0.47
2.60
1.44
0.9
0.75
0.68
0.52
0.43
* ：If you require another part number please contact with us.
**：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
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.
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