CMLE041B

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Delta Part No﹒︰CMLE041B type
Part Name︰Power Choke
Power Choke Coil CMLE041B type

Features
High performance (Isat) realized by metal dust core.
Low profile：Thickness max. 1.2mm
Low loss realized with low DCR
Capable of corresponding high frequency (1MHz)
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..
Thin type on-board power supply module for exchanger
VRM for server

Outline Dimensions
L
A'
A
W
B B'
H

Code
T
Dimensions(mm)
L
4.4  0.35
W
4.2  0.25
T
1.0  0.2
A
0.8  0.3
A’
1.0  0.1
B
2.0  0.3
B’
2.5  0.2
H
0 ~ +0.15
Recommend Land Pattern Dimensions
The customer shall determine the land dimensions shown below after confirming and safety.
B
A
C
A
2.5
B
2.2
C
5.2
Unit : mm
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
Specifications
L0
Inductance
( H )
@ (0A)
Typical
Maximum
CMLE041B-R22MS
0.22
7.2
8.0
13.0
12.0
15.5
13.0
CMLE041B-R33MS
0.33
10.8
12.0
12.0
11.0
13.5
12.0
CMLE041B-R47MS
0.47
16.0
18.4
9.5
8.5
10.6
9.2
CMLE041B-R56MS
0.56
18.0
21.0
7.0
6.0
9.1
7.8
CMLE041B-1R0MS
1.0
29.0
34.5
5.5
4.7
7.0
6.0
CMLE041B-1R5MS
1.5
49.0
56.0
5.0
4.5
5.8
5.0
CMLE041B-2R2MS
2.2
74.0
82.0
3.7
3.3
4.4
3.8
CMLE041B-3R3MS
3.3
100.0
114.0
3.1
2.8
4.1
3.5
CMLE041B-4R7MS
4.7
124.0
145.0
2.4
2.1
3.2
2.8
CMLE041B-6R8MS
6.8
300.0
355.0
1.7
1.5
2.7
2.3
Part Number
Rdc ( m)
Heat Rating Current
DC Amps. Idc ( A )
Saturation Current
DC Amps. Isat ( A )
Typical
Typical
Maximum
Maximum
* ：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.
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
Current Characteristic
CMLE041B-R22MS
0.30
100
0.42
80
0.35
CMLE041B-R33MS
TEMP RISE(℃)
0.10
20
0.05
0.00
0
2
4
6
8
10
12
DC BIAS(Amps)
14
16
18
INDUCTANCE(μH)
0.50
0.40
0.60
20
0.10
0.00
2
3
4
5
6
7
8
9
10
11
12
0
2
4
6
60
INDUCTANCE(μH)
0.36
20
0.12
0
0
1
2
3
TEMP RISE (℃)
40
0.40
20
0.20
0.00
INDUCTANCE(μH)
60
INDUCTANCE(μH)
5
6
7
8
9
10
11
CMLE041B-1R5MS
4
5
6
7
DC BIAS(Amps)
8
9
100
80
1.20
60
INDUCTANCE(μH)
0.90
40
TEMP RISE(℃)
0.60
20
0.30
0.00
0
2.70
4
1.50
TEMPRISE(℃)
INDUCTANCE(μH)
80
3
40
TEMP RISE(℃)
0.24
100
0.80
2
100
80
1.80
1
18
DC BIAS(Amps)
1.00
0
16
0.48
13
CMLE041B-1R0MS
0.60
14
CMLE041B-R56MS
DC BIAS(Amps)
1.20
8
10
12
DC BIAS(Amps)
0.00
0
1
20
80
40
TEMP RISE(℃)
0
0.07
0.72
60
0.20
40
100
INDUCTANCE(μH)
0.30
0.14
0
CMLE041B-R47MS
0.60
60
TEMP RISE(℃)
0.00
20
INDUCTANCE(μH)
0
TEMPRISE(℃)
40
INDUCTANCE(μH)
0.21
TEMPRISE(℃)
INDUCTANCE(μH)
80
0.28
0
0
10
1
2
3
4
5
6
7
8
DC BIAS(Amps)
CMLE041B-2R2MS
CMLE041B-3R3MS
4.20
100
100
60
1.35
INDUCTANCE(μH)
0.90
TEMP RISE(℃)
40
20
0.45
0.00
0
0.0
0.5
1.0
1.5
2.0 2.5 3.0 3.5
DC BIAS(Amps)
4.0
4.5
5.0
5.5
80
2.80
60
INDUCTANCE(μH)
2.10
TEMP. RISE(℃)
40
1.40
20
0.70
0.00
0
0.0
0.5
1.0
1.5
2.0 2.5 3.0 3.5
DC BIAS(Amps)
4.0
4.5
5.0
TEMPRISE(℃)
1.80
INDUCTANCE(μH)
3.50
80
TEMPRISE(℃)
9INDUCTANCE(μH)
2.25
TEMP RISE(℃)
0.15
INDUCTANCE(μH)
60
TEMP RISE(℃)
INDUCTANCE(μH)
0.20
TEMPRISE(℃)
100
0.25
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CMLE041B-4R7MS
6.00
100
80
4.00
60
INDUCTANCE(μH)
3.00
40
TEMP RISE(℃)
2.00
20
1.00
0.00
0
0.0
0.5
1.0
1.5
2.0
2.5
DC BIAS(Amps)
3.0
3.5
4.0
TEMPRISE(℃)
INDUCTANCE(μH)
5.00