OM
PL
IA
N
Features
n
Shielded construction
n
Unit height of 3.7 mm
n
Inductance range: 0.1 to 10 μH
n
Current up to 43 A
n
RoHS compliant*
*R
oH
S
This series is currently available,
but not recommended for new
designs. The newer
SRP1238A
series is recommended.
C
T
1R0 9
172
LE
AD
F
RE
E
Electrical Specifications
Bourns Part No.
SRP1235-R10M
SRP1235-R15M
SRP1235 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 ....... 600 pcs. per 13-inch reel
Product Dimensions
13.9
MAX.
(0.547)
12.7 ± 0.3
(0.500 ± 0.012)
13.5
(0.531)
MAX.
3.7
(.146)
MAX.
3.5
(.138)
MAX.
0.10
SRP1235-R22M
0.15
43.0
Ro VE LEA
HS RS D
C ION FRE
OM S E
PL AR
IA E
NT
*
Inductance
L (μH) ±20 %
I rms
(A)
41.0
I sat
(A)
56
50
DCR
(mΩ) Max.
0.96
1.2
1.3
SRF
(MHz) Typ.
105
94
100
90
SRP1235-R33M
0.22
SRP1235-R47M
0.33
38.5
SRP1235-R60M
0.47
36.5
50
SRP1235-R67M
0.60
32.0
50
SRP1235-R68M
0.67
29.0
44
1.5
SRP1235-R82M
0.68
28.0
42
2.0
SRP1235-1R0M
0.82
28.0
40
2.5
85
SRP1235-1R2M
1.00
25.0
40
2.5
73
SRP1235-1R5M
1.20
24.0
38
2.5
72
SRP1235-1R8M
1.50
21.0
36
3.0
72
SRP1235-2R2M
1.80
19.0
29
3.5
65
SRP1235-3R3M
2.20
16.5
28
4.5
7
60
SRP1235-4R7M
3.30
16.0
24
5.5
8
37
37
SRP1235-5R6M
4.70
12.0
20
32
SRP1235-6R8M
5.60
10.0
9.0
18
SRP1235-100M
SRP1235-8R2M
6.80
10.0
8.5
16
12
27
14
15
20
10.0
8.20
13
18
16
7.0
9.5
12
22
15
34
28
14
11
12
Soldering Profile
275
225
175
125
75
25
4.5
(.177)
1.5
(.060)
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
1R0
1729
<1> 5 seconds maximum
at +245 °C
12.7 ± 0.3
(0.500 ± 0.012)
<1> 245 °C
170 °C
183 °C
60 seconds
maximum
150 °C
120 -150 seconds
R
5
Ramp Up
4 °C/second maximum
50
100
150
200
250
300
2.5
(.099)
10 seconds minimum
10 seconds minimum
3.0 ± 0.5
Ramp Up
(0.118 ± 0.020)
4 °C/second maximum
0
0
50
100
Time (Seconds)
200
2.5 ± 0.5
150
(0.098 ±
Time (Seconds)
0.020)
250
Electrical Schematic
Recommended Layout
15.0
(0.591)
4.5
(.177)
7.0
(.276)
*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.
DIMENSIONS:
MM
(INCHES)
Applications
n
Input/output of DC/DC converters
n
Power supplies for:
• Portable communications equipment
• Camcorders
• LCD TVs
• Car audio systems
SRP1235 Series - Shielded Power Inductors
L vs. I Charts
0.20
0.18
0.16
0.14
0.12
0.10
0.08
0.06
0.04
0.02
0
100
90
80
70
60
50
40
30
20
10
0
8 12 16 20 24 28 32 36 40 44 48 52 56
SRP1235-R10M
0 4
0.30
0.27
0.24
0.21
0.18
0.15
0.12
0.09
0.06
0.03
0
0 4
8
100
90
80
70
60
50
40
30
20
10
0
12 16 20 24 28 32 36 40 44 48 52
SRP1235-R15M
0.50
0.45
0.40
0.35
0.30
0.25
0.20
0.15
0.10
0.05
0
SRP1235-R22M
0
4
8
12 16 20 24
100
90
80
70
60
50
40
30
20
10
0
28 32 36 40 44 48
Temperature Rise (°C)
Temperature Rise (°C)
DC Current (A)
DC Current (A)
DC Current (A)
0.60
0.54
0.46
0.43
0.36
0.30
0.24
0.16
0.13
0.06
0
SRP1235-R33M
0
5
10
15
20
25
30
35
40
45
100
90
80
70
60
50
40
30
20
10
0
50
0.80
0.72
0.64
0.56
0.48
0.40
0.32
0.24
0.16
0.08
0
SRP1235-R47M
0
4
8
12
16 20
24
28
32
36
40
100
90
80
70
60
50
40
30
20
10
0
44
1.20
1.08
0.96
0.84
0.72
0.60
0.48
0.36
0.24
0.12
0
SRP1235-R60M
0
4
8
12
16 20
24
28
32
36
40
100
90
80
70
60
50
40
30
20
10
0
44
Temperature Rise (°C)
Temperature Rise (°C)
DC Current (A)
DC Current (A)
DC Current (A)
Temperature Rise (°C)
Temperature Rise (°C)
0.96
0.72
0.48
0.24
0
0
8
16
24
32
80
60
40
20
0
40
0
4
8
12 16
20
24 28
32
36
40
0
4
8
12
16
20
24
28
32
36
DC Current (A)
DC Current (A)
DC Current (A)
1.50
1.35
1.20
1.05
0.90
0.75
0.60
0.45
0.30
0.15
0
SRP1235-1R0M
0
4
8
12
16
20
24
28
32
36
100
90
80
70
60
50
40
30
20
10
0
40
Temperature Rise (°C)
Temperature Rise (°C)
1.6
1.2
0.8
0.4
0
0
5.8
11.6
17.4
23.2
80
60
40
20
0
29
0
4
8
12
16
20
24
DC Current (A)
DC Current (A)
DC Current (A)
3.0
2.7
2.4
2.1
1.8
1.5
1.2
0.9
0.6
0.3
0
SRP1235-1R8M
0
4
8
12
16
20
100
90
80
70
60
50
40
30
20
10
0
24
4.0
3.6
3.2
2.8
2.4
2.0
1.6
1.2
0.8
0.4
0
SRP1235-2R2M
0
4
8
12
16
20
100
90
80
70
60
50
40
30
20
10
0
24
6.0
5.4
4.8
4.2
3.6
3.0
2.4
1.8
1.2
0.6
0
SRP1235-3R3M
0
2
4
6
8
10
12
14
16
18
100
90
80
70
60
50
40
30
20
10
0
20
Temperature Rise (°C)
Temperature Rise (°C)
DC Current (A)
DC Current (A)
DC Current (A)
mperature Rise (°C)
mperature Rise (°C)
mperature Rise (°C)
8.0
7.2
6.4
5.6
4.8
4.0
3.2
2.4
SRP1235-4R7M
15.0
100
10
100
100
13.5
90
9
90
90
Specifications are subject to change without notice.
12.0
8
80
80
80
The device characteristics and parameters in this data sheet can and do vary in different applications and actual device performance may vary over time.
10.5
7
70
70
70
Users should verify actual device performance in their specific applications.
9.0
6
60
60
60
7.5
50
50
5
50
40
6.0
40
40
4
4.5
3
30
30
30
SRP1235-5R6M
SRP1235-6R8M
Inductance ( H)
Inductance ( H)
Inductance ( H)
Temperature Rise (°C)
Inductance ( H)
Inductance ( H)
Inductance ( H)
Temperature Rise (°C)
2.0
SRP1235-1R2M
100
3.0
2.7
2.4
2.1
1.8
1.5
1.2
0.9
0.6
0.3
0
SRP1235-1R5M
100
90
80
70
60
50
40
30
20
10
0
28
Inductance ( H)
Inductance ( H)
Inductance ( H)
Temperature Rise (°C)
1.2
SRP1235-R67M
100
1.50
1.35
1.20
1.05
0.90
0.75
0.60
0.45
0.30
0.15
0
SRP1235-R68M
100
90
80
70
60
50
40
30
20
10
0
4
1.50
1.35
1.20
1.05
0.90
0.75
0.60
0.45
0.30
0.15
0
SRP1235-R82M
100
90
80
70
60
50
40
30
20
10
0
40
Inductance ( H)
Inductance ( H)
Inductance ( H)
Temperature Rise (°C)
Inductance ( H)
Inductance ( H)
Inductance ( H)
Temperature Rise (°C)
Inductance ( H)
Inductance ( H)
Inductance ( H)
1.35
1.20
1.05
0.90
0.75
0.60
0.45
0.30
0.15
0
0
4
8
12
16
20
24
28
32
36
90
80
70
60
50
40
30
20
10
0
40
1.6
1.2
0.8
0.4
0
0
5.8
11.6
17.4
23.2
80
60
40
20
0
29
2.7
2.4
2.1
1.8
1.5
1.2
0.9
0.6
0.3
0
0
4
8
12
16
20
24
90
80
70
60
50
40
30
20
10
0
28
Temperature Rise (°C
Temperature Rise (°C
DC Current (A)
DC Current (A)
DC Current (A)
3.0
2.7
2.4
2.1
1.8
1.5
1.2
0.9
0.6
0.3
0
SRP1235-1R8M
3312 - 2 mm SMD Trimming Potentiometer
SRP1235 Series - Shielded Power Inductors
0
L vs. I
8.0
7.2
6.4
5.6
4.8
4.0
3.2
2.4
1.6
0.8
0
Charts
DC Current (A)
4
8
12
16
20
100
90
80
70
60
50
40
30
20
10
0
24
4.0
3.6
3.2
2.8
2.4
2.0
1.6
1.2
0.8
0.4
0
SRP1235-2R2M
0
4
8
12
16
20
100
90
80
70
60
50
40
30
20
10
0
24
6.0
5.4
4.8
4.2
3.6
3.0
2.4
1.8
1.2
0.6
0
SRP1235-3R3M
0
2
4
6
8
10
12
14
16
18
100
90
80
70
60
50
40
30
20
10
0
20
Temperature Rise (°C)
Temperature Rise (°C)
DC Current (A)
DC Current (A)
SRP1235-4R7M
0
2
4
6
8
10
12
14
16
18
100
90
80
70
60
50
40
30
20
10
0
20
10
9
8
7
6
5
4
3
2
1
0
SRP1235-5R6M
0
2
4
6
8
10
12
14
100
90
80
70
60
50
40
30
20
10
0
16
15.0
13.5
12.0
10.5
9.0
7.5
6.0
4.5
3.0
1.5
0
SRP1235-6R8M
0
1
2
3
4
5
6
7
8
9
100
90
80
70
60
50
40
30
20
10
0
10 11 12 13
Temperature Rise (°C)
Temperature Rise (°C)
DC Current (A)
DC Current (A)
DC Current (A)
12.0
SRP1235-8R2M
Inductance ( H)
7.2
4.8
2.4
0
0
2.4
4.8
7.2
9.6
Inductance ( H)
9.6
100
90
80
70
60
50
40
30
20
10
0
12
20
18
16
14
12
10
8
6
4
2
0
SRP1235-100M
0
1
2
3
4
5
6
7
8
9
10
100
90
80
70
60
50
40
30
20
10
0
11
Temperature Rise (°C)
DC Current (A)
DC Current (A)
Packaging Specifications
330.0
(13.00)
DIA.
2.0 ± 0.5
(.079 ± .020)
Temperature Rise (°C)
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.
DIMENSIONS:
MM
(INCHES)
EMBOSSED
CAVITY
13.5 ± 0.5
DIA.
(.53 ± .020)
EMBOSSED
CARRIER
24.0 ± 0.5
(0.95 ± 0.020)
0.35 ± 0.05
(0.014 ± 0.020)
13.9 ± 0.1
(0.547 ± 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)
2.7 ± 0.3
(.106 ± 0.012)
24.0 ± 0.3
(0.95 ± 0.012)
4.5 ± 0.1
(0.177 ± 0.004)
0.15
DIA.
(0.0006)
13.5 ± 0.1
(0.520 ± 0.004)
16.0 ± 0.1
(0.629 ± 0.004)
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.
Temperature Rise (°C)
Inductance ( H)
Inductance ( H)
Inductance ( H)
Temperature Rise (°C)
Inductance ( H)
Inductance ( H)
Inductance ( H)
Temperature Rise (°C
Inductance ( H)
Inductance ( H)
Inductance ( H)
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