CMLB041B

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Delta Part No﹒︰CMLB041B type
Part Name︰Power Choke
Power Choke Coil CMLB041B 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
CMLB041B-R47MS
0.47
CMLB041B-R68MS
Heat Rating Current
DC Amps. Idc ( A )
Saturation Current
DC Amps. Isat ( A )
Maximum
Typical
Maximum
Typical
Maximum
17.5
19.6
6.4
5.7
7.4
6.7
0.68
31.0
36.0
5.5
5.0
7.3
6.5
CMLB041B-1R0MS
1.0
42.0
46.5
5.0
4.3
5.5
5.0
CMLB041B-1R5MS
1.5
61.0
75.0
3.3
3.0
4.6
4.0
CMLB041B-2R2MS
2.2
75.4
83.0
3.3
2.8
3.8
3.4
CMLB041B-4R7MS
4.7
171.0
193.0
2.0
1.8
2.8
2.2
CMLB041B-6R8MS
6.8
320.0
368.0
1.7
1.5
2.2
1.9
CMLB041B-8R2MS
8.2
420.0
480.0
1.5
1.3
1.9
1.6
Part Number
Rdc ( m)
* ：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
20
0.10
1.20
4
5
6
7
DC BIAS(Amps)
8
9
10
CMLB041B-1R0MS
1.00
TEMP. RISE(℃)
1.80
80
1.50
40
0.40
20
0.20
0.00
2
3
4
DC BIAS(Amps)
5
6
CMLB041B-2R2MS
2.25
INDUCTANCE(μH)
TEMP. RISE(℃)
9
10
100
80
60
INDUCTANCE(μH)
0.90
TEMP RISE (℃)
40
0.60
20
0.30
0
80
5.00
60
40
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 6.5
DC BIAS(Amps)
8
1.20
6.00
20
0.00
4
5
6
7
DC BIAS(Amps)
CMLB041B-1R5MS
100
0.90
0.45
3
DC BIAS(Amps)
1.80
1.35
2
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 6.5
7
INDUCTANCE(μH)
2.70
1
0
1
0.00
0
0
20
0.00
100
60
INDUCTANCE(μH)
40
TEMP. RISE(℃)
0
0.80
0.60
INDUCTANCE(μH)
0.28
11
INDUCTANCE(μH)
3
TEMP RISE(℃)
2
60
0.42
0.14
0
1
80
0.56
TEMPRISE(℃)
40
100
CMLB041B-4R7MS
100
80
4.00
60
INDUCTANCE(μH)
3.00
TEMP. RISE(℃)
40
2.00
20
1.00
0.00
0
0.0
0.4
0.8
1.2
1.6 2.0 2.4
DC BIAS(Amps)
2.8
3.2
3.6
4.0
TEMPRISE(℃)
TEMP. RISE(℃)
0.20
CMLB041B-R68MS
TEMPRISE(℃)
0.70
60
INDUCTANCE(μH)
0.30
0
INDUCTANCE(μH)
80
0.40
0.00
INDUCTANCE(μH)
0.84
TEMPRISE(℃)
INDUCTANCE(μH)
0.50
100
INDUCTANCE(μH)
CMLB041B-R47MS
TEMP RISE(℃)
0.60