SDER043T

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Delta Part No﹒︰SDER043T type
Part Name︰Sealed Choke
Sealed Choke Coil SDER043T type

Features
Low profile：4.0mm x 4.0mm x 3.0mm
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
L
T
Dimensions (mm)
4.0  0.2
W
4.0  0.2
T
3.0 Max
Unit : mm
Note：This graph is in regard to outline dimensions spec. For outer appearance, please refer to actual product.
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
Marking
The inductor is marked with a 3-digit code
Example – – 22.0H  220
Upside of Chip
220

Recommend Land Pattern Dimensions
The customer shall determine the land dimensions shown below after confirming and safety.
B
A
C
A
3.6
B
1.8
C
4.1
Unit : mm
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
Specifications
Part Number
SDER043T-2R2MS
SDER043T-3R3MS
SDER043T-4R7MS
SDER043T-100MS
SDER043T-220MS
SDER043T-121MS
L0
Inductance
( H )
@ (0A)
2.2
3.3
4.7
10.0
22.0
120.0
Rdc ( m)
Heat Rating Current
DC Amps. Idc ( A )
Saturation Current
DC Amps. Isat ( A )
Typical
Maximum
Typical
Maximum
Typical
Maximum
28
39.5
70
168
225
1,000
36.4
48
85
202
282
1,250
3.70
3.40
2.20
1.35
1.10
0.62
3.30
3.05
2.00
1.21
1.00
0.55
3.70
3.50
2.90
1.70
1.30
0.64
3.30
3.15
2.60
1.53
1.15
0.57
* ：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:100KHz, 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.