SRP1250

This series is currently available,
but not recommended for new
designs. The newer SRP1245A
series is recommended.
PL
IA
N
T
Features
CO
M
■ Shielded construction
*R
oH
S
■ Unit height of 5.9 mm
■ Inductance range: 0.22 to 10 μH
■ Current up to 45 A
■ RoHS compliant*
SRP1250 Series - Shielded Power Inductors
Electrical Specifications
Bourns Part No.
Inductance
L (μH) ±20 %
I rms
(A)
I sat
(A)
DCR
(mΩ) Max.
SRP1250-R22M
0.22
45
80
1.0
SRP1250-R36M
0.36
41
75
1.1
SRP1250-R47M
0.47
38
65
1.3
SRP1250-R50M
0.50
36
55
1.5
SRP1250-R56M
0.56
36
55
1.5
SRP1250-R68M
0.68
34
54
1.7
SRP1250-R82M
0.82
31
53
2.3
SRP1250-1R0M
1.00
29
50
2.5
SRP1250-1R2M
1.20
27
49
3.3
SRP1250-1R5M
1.50
23
48
4.1
SRP1250-1R8M
1.80
21
40
4.7
SRP1250-2R2M
2.20
20
32
5.5
SRP1250-2R7M
2.70
17
32
7.3
SRP1250-3R3M
3.30
15
32
9.2
SRP1250-4R7M
4.70
12
27
15.0
SRP1250-6R0M
6.00
9.5
14
10.0
SRP1250-6R8M
6.80
11
21
18.5
SRP1250-7R8M
7.80
10
18
20.5
SRP1250-9R0M
9.00
10
18
22.5
SRP1250-100M
10.0
9
16
25.5
General Specifications
Test Voltage ..................................0.25 V
Test Frequency ......................... 100 KHz
Reflow Soldering .. 230 °C; 50 sec. max.
Operating Temperature
................................-55 °C to +150 °C
(Temperature rise included)
Storage Temperature
................................-55 °C to +150 °C
Resistance to Soldering Heat
............................. +260 °C for 10 sec.
Materials
Core ..................................................Iron
Wire ............................Enameled copper
Terminal ........................................Cu/Sn
Rated Current .....Ind. drops 20 % at Isat
Temperature Rise .....40 °C at rated Irms
Packaging ....... 500 pcs. per 13-inch reel
Product Dimensions
5.2
(.205)
MAX.
5.0
(.197)
MAX.
13.9
MAX.
(0.547)
12.7 ± 0.3
(0.500 ± 0.012)
13.5
(0.531)
MAX.
1R5
Soldering Profile
Temperature (°C)
275
<1> Maximum of 10 seconds
between +255 °C and +260 °C
225
260 °C peak
<1> 255 °C
12.7 ± 0.3
(0.500 ± 0.012)
220 °C
190°C
60 seconds
maximum
175
Ramp Down
5 °C/second
150 °C
125
120-150 seconds
3.0 ± 0.5
(0.118 ± 0.020)
10 seconds minimum
75
Ramp Up
4 °C/second maximum
2.5 ± 0.5
(0.098 ± 0.020)
25
0
50
100
150
200
250
300
Time (Seconds)
Recommended Layout
Electrical Schematic
4.5
(.177)
15.0
(0.591)
7.0
(.276)
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
■ Input/output of DC/DC converters
■ Power supplies for:
• Portable communications equipment
• Camcorders
• LCD TVs
• Car audio systems
SRP1250 Series - Shielded Power Inductors
0
36
48
0
60
5
10 15
20 25
15
20
25
30
40
45
50
55
5
10
15
20
0.72
60
0.48
40
0.24
20
0
53
0
31.8
Inductance (µH)
80
21.2
42.4
5
10
15
20
25
0
5
10
30
35
15
20
25
35
40
45
50
110
99
88
77
66
55
44
33
22
11
0
60
0
5
10 15
20
1.5
80
1.2
0.8
40
16
80
1.6
60
40
0.8
20
0
24
0
32
5
10
24
15
40 45
50 55
160
120
0.8
80
0.4
40
0
50
0
0
10
20
30
40
32
SRP1250-2R2M
2.4
2.1
1.8
1.5
1.1
0.9
0.6
0.3
0
40
0
0
5
10
15
20
30
25
35
108
96
84
72
60
48
36
24
12
0
40
DC Current (A)
108
96
84
72
60
48
36
24
12
0
0
35
1.2
SRP1250-3R3M
0.40
0.36
0.32
0.28
0.24
0.20
0.16
0.12
0.8
0.4
0
30
SRP1250-1R2M
1.6
160
120
8
25
DC Current (A)
2.0
0
Inductance (µH)
100
2.4
DC Current (A)
50
110
99
88
77
66
55
44
33
22
11
0
60
DC Current (A)
0
Temperature Rise (°C)
Inductance (µH)
3.2
16
45
0.4
140
120
8
40
SRP1250-R68M
0.80
0.72
0.64
0.56
0.48
0.40
0.32
0.24
0.16
0.08
0
DC Current (A)
SRP1250-2R7M
0
35
SRP1250-1R8M
2.4
Inductance (µH)
Temperature Rise (°C)
Inductance (µH)
120
108
96
84
72
60
48
36
24
12
0
40
DC Current (A)
4.0
10
DC Current (A)
SRP1250-1R5M
0
30
SRP1250-1R0M
1.2
1.1
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
DC Current (A)
3.0
2.7
2.4
2.1
1.8
1.5
1.2
0.9
0.6
0.3
0
25
110
99
88
77
66
55
44
33
22
11
0
55
Inductance (µH)
Inductance (µH)
0
Temperature Rise (°C)
Inductance (µH)
100
0.96
10.6
5
DC Current (A)
SRP1250-R82M
0
0
DC Current (A)
SRP1250-R56M
0.60
0.54
0.48
0.42
0.36
0.30
0.24
0.18
0.12
0.06
0
DC Current (A)
1.2
50 55
Inductance (µH)
10
40 45
Inductance (µH)
5
35
20
DC Current (A)
25
30
Inductance (µH)
0
110
99
88
77
66
55
44
33
22
11
0
60
Temperature Rise (°C)
Inductance (µH)
SRP1250-R50M
0.60
0.54
0.48
0.42
0.36
0.30
0.24
0.18
0.12
0.06
0
30
DC Current (A)
DC Current (A)
Temperature Rise (°C)
24
Temperature Rise (°C)
12
Temperature Rise (°C)
0
Temperature Rise (°C)
20
0
Temperature Rise (°C)
0.08
Temperature Rise (°C)
40
110
99
88
77
66
55
44
33
22
11
0
15 20 25 30 35 40 45 50 55 60 65
Temperature Rise (°C)
60
0.16
SRP1250-R47M
0.60
0.54
0.48
0.42
0.36
0.30
0.24
0.18
0.12
0.06
0
SRP1250-4R7M
6.0
5.5
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
108
96
84
72
0
4
8
12
15
20
24
60
48
36
24
12
0
28
Temperature Rise (°C)
0.24
Inductance (µH)
80
110
99
88
77
66
55
44
33
22
11
0
60
Temperature Rise (°C)
0.32
SRP1250-R36M
0.60
0.54
0.48
0.42
0.36
0.30
0.24
0.18
0.12
0.06
0
Temperature Rise (°C)
Inductance (µH)
100
Inductance (µH)
SRP1250-R22M
0.4
Temperature Rise (°C)
L vs. I Charts
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.
3312 - 2 mm
SMD- Shielded
TrimmingPower
Potentiometer
SRP1250
Series
Inductors
L vs. I Charts
40
2
20
0
2.8
5.6
8.4
11.2
6.0
72
5.0
60
4.0
48
3.0
36
2.0
24
1.0
12
0
21
0
0
14
0
3
6
SRP1250-9R0M
80
60
8
40
4
20
0
3
6
9
12
15
0
18
Inductance (µH)
12
Temperature Rise (°C)
Inductance (µH)
120
100
0
12
15
18
84
72
60
48
36
24
0
2
4
SRP1250-100M
12.0
11.0
10.0
9.0
8.0
7.0
6.0
5.0
4.0
3.0
2.0
1.0
0
0
DC Current (A)
2
4
6
8
10
100
90
80
70
60
50
40
12
14
30
20
10
0
16
6
8
10
12
14
16
12
0
18
DC Current (A)
DC Current (A)
DC Current (A)
16
9
96
Temperature Rise (°C)
0
84
SRP1250-7R8M
10.0
9.0
8.0
7.0
6.0
5.0
4.0
3.0
2.0
1.0
0
DC Current (A)
Packaging Specifications
2.0 ± 0.5
(.079 ± .020)
330.0
(13.00)
DIA.
THICKNESS
0.10
(.004)
MAX.
13.5 ± 0.5
(0.53 ± .020)
DIA.
EMBOSSED
CAVITY
75.0 ± 2.0
(2.96 ± 0.08)
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)
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.
13.9 ± 0.1
(0.547 ± 0.004)
5.6 ± 0.1
(0.220 ± 0.004)
1.75 ± 0.1
(.069 ± 0.004)
2.7 ± 0.3
(.106 ± 0.012)
0.15
DIA.
(0.0006)
13.5 ± 0.1
(0.520 ± 0.004)
16.0 ± 0.1
(0.629 ± 0.004)
DIMENSIONS:
MM
(INCHES)
REV. 06/14
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.
24.0 ± 0.3
(0.95 ± 0.012)
Temperature Rise (°C)
4
96
7.0
Inductance (µH)
60
6
Inductance (µH)
80
8
SRP1250-6R8M
8.0
Temperature Rise (°C)
Inductance (µH)
100
Temperature Rise (°C)
SRP1250-6R0M
10