OM
PL
IA
N
Features
n
Shielded construction
n
Unit height of 4.2 mm
*R
oH
S
This series is currently available,
but not recommended for new
designs. The newer
SRP1038A
series is recommended.
C
T
2R2 5
172
LE
AD
F
RE
E
n
Inductance range: 0.15 to 15 μH
n
Current up to 34 A
n
RoHS compliant*
Electrical Specifications
Bourns Part No.
SRP1040 Series - Shielded Power Inductors
General Specifications
Test Voltage ..................................0.25 V
Test Frequency ......................... 100 KHz
Reflow Soldering .. 230 °C; 50 sec. max.
Operating Temperature
................................-40 °C to +125 °C
(Temperature rise included)
Storage Temperature (On Board)
................................-40 °C to +125 °C
Resistance to Soldering Heat
............................. +260 °C for 10 sec.
Moisture Sensitivity Level .....................1
ESD Classification (HBM).................N/A
Materials
Core ..................................................Iron
Wire ............................Enameled copper
Terminal ........................................Cu/Sn
Rated Current .....Ind. drops 20 % at Isat
Temperature Rise .....40 °C at rated Irms
Packaging ....... 900 pcs. per 13-inch reel
Product Dimensions
11.8
MAX.
(0.465)
10.7 ± 0.5
(0.421 ± 0.020)
10.5
(0.413)
MAX.
4.2
(.165)
MAX.
4.0
(.157)
MAX.
SRP1040-R15M
SRP1040-R20M
SRP1040-R36M
SRP1040-R39M
SRP1040-R47M
SRP1040-R50M
SRP1040-R56M
SRP1040-R68M
SRP1040-R75M
SRP1040-R80M
SRP1040-1R0M
SRP1040-1R2M
SRP1040-1R5M
SRP1040-1R7M
SRP1040-2R2M
SRP1040-2R5M
0.15
0.20
0.36
0.39
0.47
0.50
0.56
0.68
0.75
0.80
1.0
1.2
1.5
1.7
2.2
2.5
3.3
3.9
4.7
5.6
6.8
10
15
8.2
Ro VE LEA
HS RS D
C ION FRE
OM S E
PL AR
IA E
NT
*
Inductance
L (μH) ±20 %
I rms
(A)
34
32
28
24
26
23
25
23
22
21
20
18
15
15
11.5
9.0
8.0
7.0
6.5
5.0
10
12
I sat
(A)
40
40
40
32
38
32
36
32
28
30
28
24
20
18
17
14
14
15
13
12
8.0
11
DCR
(mΩ) Max.
1.3
1.0
1.4
1.4
1.6
1.9
1.9
2.4
2.5
3.0
3.5
4.7
7.5
7.5
8.6
10
12
14
16
24
8.7
SRP1040-3R3M
SRP1040-3R9M
SRP1040-4R7M
SRP1040-5R6M
SRP1040-6R8M
SRP1040-100M
SRP1040-150M
SRP1040-8R2M
5.0
5.0
9.0
33
35
57
7.0
2R2
1725
10.0 ± 0.5
(0.394 ± 0.020)
Soldering Profile
275
225
175
125
75
25
4.5
(.177)
Temperature (°C)
190°C
150 °C
120-150 seconds
220 °C
60 seconds
maximum
Ramp Down
5 °C/second
Temperature (°C)
<1> Maximum of 10 seconds
between +255 °C and +260 °C
<1> 255 °C
260 °C peak
275
225
175
125
75
25
<1> 5 seconds maximum
at +245 °C
<1> 245 °C
170 °C
2.9 ± 0.5
(0.114
150 °C
± 0.020)
2.2 ±
120 -150 seconds
0.5
183 °C
60 seconds
maximum
R
5
2.5
(.099)
10 seconds minimum
(0.087 ± 0.020)
10 seconds minimum
Ramp Up
4 °C/second maximum
50
100
150
200
250
300
Recommended Layout
4 °C/second maximum
0
50
(0.488)
Ramp Up
0
1.5
(.060)
100
12.4
150
Time (Seconds)
Time (Seconds)
4.5
(.177)
200
250
Electrical Schematic
5.4
(.213)
DIMENSIONS:
*RoHS Directive 2002/95/EC Jan. 27, 2003 including annex and RoHS Recast 2011/65/EU June 8, 2011.
Specifications are subject to change without notice.
The device characteristics and parameters in this data sheet can and do vary in different applications and actual device performance may vary over time.
Users should verify actual device performance in their specific applications.
MM
(INCHES)
Applications
n
Input/output of DC/DC converters
n
Power supplies for:
• Portable communications equipment
• Camcorders
• LCD TVs
• Car audio systems
SRP1040 Series - Shielded Power Inductors
L vs. I Charts
0.3
0.24
SRP1040-R15M
100
0.25
SRP1040-R20M
100
90
1.0
0.9
SRP1040-R36M
100
90
70
60
50
40
30
20
10
0
40
Temperature Rise (°C)
Temperature Rise (°C)
0.18
0.12
0.06
0
60
40
20
0
45
Inductance ( H)
70
0.15
0.1
0.05
0
60
50
40
30
20
10
0
40
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
0
9
18
27
36
DC Current (A)
0
4
8
12
16
20
24
28
32
36
0
4
8
12
16
20
24
28
32
36
DC Current (A)
100
1.0
0.9
DC Current (A)
0.6
0.48
0.36
0.24
0.12
0
SRP1040-R39M
SRP1040-R47M
100
90
0.7
SRP1040-R50M
100
Temperature Rise (°C)
Temperature Rise (°C)
Inductance ( H)
Inductance ( H)
60
40
20
0
38
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
70
60
50
40
30
20
10
0
40
Inductance ( H)
0.8
80
0.56
0.42
0.28
0.14
0
60
40
20
0
36
0
7.6
15.2
22.8
30.4
DC Current (A)
0
4
8
12
16
20
24
28
32
36
0
7.2
14.4
21.6
28.8
DC Current (A)
DC Current (A)
1.50
1.35
1.20
SRP1040-R56M
100
90
Temperature Rise (°C)
Temperature Rise (°C)
Inductance ( H)
1.05
0.90
0.75
0.60
0.45
0.30
0.15
0
70
60
50
40
30
20
10
0
4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
70
60
50
40
30
20
10
0
33
0.9
0.6
0.3
0
60
40
20
0
31
0
3
6
9
12 15
18
21
24
27
30
0
6.2
12.4
18.6
24.8
DC Current (A)
DC Current (A)
DC Current (A)
1.0
0.9
0.8
SRP1040-R80M
100
90
80
70
60
50
40
30
20
10
0
32
Temperature Rise (°C)
Temperature Rise (°C)
Inductance ( H)
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
Inductance ( H)
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
70
60
50
40
30
20
10
0
30
1.8
1.2
0.6
0
60
40
20
0
22
0
4
8
12
16
20
24
28
3
6
9
12
15
18
21
24
27
DC Current (A)
DC Current (A)
0
4.4
8.8
13.2
17.6
DC Current (A)
Temperature Rise (°C)
Temperature Rise (°C)
Inductance ( H)
Inductance ( H)
2.8
2.4
2.0
1.6
1.2
0.8
0.4
0
70
60
50
40
30
20
10
0
22
Inductance ( H)
80
60
40
20
0
20
1.8
1.2
0.6
0
70
60
50
40
30
20
10
0
10 12 14 16 18 20 22 24
2.0
1.6
1.2
0.8
0.4
0
0
2
4
6
8
10
12
14
16
18
20
DC Current (A)
0
4
8
12
16
0
2
4
6
8
DC Current (A)
DC Current (A)
4.0
3.2
Specifications are subject to change without notice.
The device characteristics and parameters in this data sheet can and do vary in different applications and actual device performance may vary over time.
SRP1040-2R5M
SRP1040-3R9M
SRP1040-3R3M
100
6.0
100
8.0
100
Users should verify actual device performance in their specific applications.
7.2
6.4
5.6
90
80
70
e (°C)
e (°C)
e (°C)
80
4.8
80
H)
H)
H)
Temperature Rise (°C)
4.0
3.6
3.2
SRP1040-1R5M
100
90
80
3
2.4
SRP1040-1R7M
100
4.0
3.6
3.2
2.8
2.4
SRP1040-2R2M
100
90
80
Temperature Rise (°C)
2.0
1.8
1.6
SRP1040-1R0M
100
90
80
3
2.4
SRP1040-1R2M
100
80
Inductance ( H)
Temperature Rise (°C)
80
2.0
1.8
1.6
SRP1040-R68M
100
90
80
1.5
1.2
SRP1040-R75M
100
80
Inductance ( H)
Inductance ( H)
Temperature Rise (°C)
80
80
Temperature Rise (°C)
80
0.2
80
Inductance ( H)
0.8
80
Inductance ( H)
Temperature Rise (°
Inductance (
0.6
0.5
0.4
0.3
0.2
0.1
0
60
50
40
30
20
10
0
32
1.8
1.2
0.6
0
60
40
20
0
22
1.0
0.8
0.6
0.4
0.2
0
50
40
30
20
10
0
30
0
4
8
12
16
20
24
28
3
6
9
12
15
18
21
24
27
DC Current (A)
DC Current (A)
0
4.4
8.8
13.2
17.6
DC Current (A)
Temperature Rise (°C)
Temperature Rise (°C)
Inductance ( H)
Inductance ( H)
2.8
2.4
2.0
1.6
1.2
0.8
0.4
0
70
60
50
40
30
Inductance ( H)
80
60
40
20
1.8
1.2
0.6
70
60
50
40
30
20
10
0
10 12 14 16 18 20 22 24
3312 - 2 mm SMD Trimming Potentiometer
SRP1040 Series - Shielded Power Inductors
0
2
4
6
8
10
12
14
16
18
20
20
10
0
22
0
0
4
8
12
16
2.0
1.6
1.2
0.8
0.4
0
L vs. I Charts
DC Current (A)
4.0
3.2
0
20
0
2
4
6
8
DC Current (A)
DC Current (A)
SRP1040-2R5M
100
8.0
7.2
SRP1040-3R3M
100
90
6.0
SRP1040-3R9M
100
Temperature Rise (°C)
Temperature Rise (°C)
2.4
1.6
0.8
0
60
40
20
0
16
70
60
50
40
30
20
10
0
16
3.6
2.4
1.2
0
60
40
20
0
15
4.0
3.2
2.4
1.6
0.8
0
0
4
8
12
0
2
4
6
8
10
12
14
0
3
6
9
12
DC Current (A)
DC Current (A)
DC Current (A)
8.0
7.2
6.4
5.6
4.8
4.0
3.2
2.4
1.6
0.8
0
SRP1040-4R7M
100
90
15.0
13.5
SRP1040-5R6M
100
90
12
SRP1040-6R8M
Temperature Rise (°C)
Temperature Rise (°C)
Inductance ( H)
Inductance ( H)
70
60
50
40
30
20
10
0
16
70
60
50
40
30
20
10
0
10 11 12
Inductance ( H)
8
6
4
2
0
0
4
6
12
70
60
50
40
30
20
10
0
16
7.5
6.0
4.5
3.0
1.5
0
0
2
4
6
8
10
12
0
1
2
3
4
5
6
7
8
9
DC Current (A)
DC Current (A)
DC Current (A)
15.0
13.5
12.0
10.5
9.0
7.5
6.0
4.5
3.0
1.5
0
SRP1040-8R2M
100
90
12.0
SRP1040-100M
100
90
80
70
60
50
40
30
20
10
0
9
25
20
SRP1040-150M
100
90
80
70
60
50
40
30
20
10
0
7.0
Temperature Rise (°C)
Inductance ( H)
7.5
6.0
4.5
3.0
1.5
0
0
1
2
3
4
5
6
7
8
Inductance ( H)
70
60
50
40
30
20
10
0
9
Temperature Rise (°C)
15
10
5
0
0
1
2
3
4
5
6
7
8
DC Current (A)
0
1.4
2.8
4.2
5.6
DC Current (A)
DC Current (A)
35
28
SRP1040-220M
100
90
80
70
60
50
40
30
20
10
0
6.0
50
40
SRP1040-330M
100
90
80
70
60
50
40
30
20
10
0
5
70
56
SRP1040-470M
100
90
80
70
60
50
40
30
20
10
0
3.0
Temperature Rise (°C)
Temperature Rise (°C)
21
14
7
0
30
20
10
0
42
28
14
0
0
1.2
2.4
3.6
4.8
0
1
2
3
4
0
0.6
1.2
1.8
2.4
DC Current (A)
DC Current (A)
DC Current (A)
Specifications are subject to change without notice.
The device characteristics and parameters in this data sheet can and do vary in different applications and actual device performance may vary over time.
Users should verify actual device performance in their specific applications.
Temperature Rise (°C)
Inductance ( H)
Inductance ( H)
Inductance ( H)
Temperature Rise (°C)
80
10.5
9.0
Inductance ( H)
Temperature Rise (°C)
80
12.0
10.5
9.0
80
10
100
90
80
Temperature Rise (°C)
80
Inductance ( H)
Inductance ( H)
Inductance ( H)
6.4
5.6
4.8
80
4.8
80
Temperature Rise (°C)
4.0
3.6
3.2
SRP1040-1R5M
100
90
80
3
2.4
SRP1040-1R7M
100
4.0
3.6
3.2
2.8
2.4
SRP1040-2R2M
100
90
80
Temperature Rise (
Inductance ( H)
Temperature Rise
Inductance ( H
0.7
70
1.4
1.2
70
60
SRP1040 Series - Shielded Power Inductors
Packaging Specifications
330.0
(13.00)
DIA.
2.0 ± 0.5
(.079 ± .020)
21.0 ± 0.8
(.827 ± .031)
13.5 ± 0.5
(0.53 ± .020)
DIA.
75.0 ± 2.0
(2.96 ± 0.08)
THICKNESS
0.10
(.004)
MAX.
EMBOSSED
CAVITY
13.0 ± 0.5
DIA.
(.512 ± .020)
EMBOSSED
CARRIER
26.0 - 0.00
(1.02 - 0.00)
0.35 ± 0.05
(0.014 ± 0.020)
11.8 ± 0.1
(0.465 ± 0.004)
4.0 ± 0.1
(0.157 ± 0.004)
2.0 ± 0.1
(0.079 ± 0.004)
1.5 ± 0.1
(0.059 ± 0.004)
DIA.
1.75 ± 0.1
(.069 ± 0.004)
2.2 ± 0.3
(.087 ± 0.012)
24.0 ± 0.3
(0.95 ± 0.012)
4.5 ± 0.1
(0.177 ± 0.004)
0.15
DIA.
(0.0006)
16.0 ± 0.1
(0.629 ± 0.004)
10.5 ± 0.1
(0.413 ± 0.004)
DIMENSIONS:
MM
(INCHES)
REV. 12/17
Specifications are subject to change without notice.
The device characteristics and parameters in this data sheet can and do vary in different applications and actual device performance may vary over time.
Users should verify actual device performance in their specific applications.
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