BOURNS SRP1250-1R8M

*R
*RoHS
oH C
S OM
CO P
M LIA
PL N
IA T
NT
Features
Applications
■ Shielded construction
■ Input/output of DC/DC converters
■ Unit height of 5.9 mm
■ Power supplies for:
• Portable communications equipment
• Camcorders
• LCD TVs
• Car audio systems
■ Inductance range: 0.36 µH to 10 µH
■ Current up to 41 A
■ RoHS compliant*
SRP1250 Series - Shielded Power Inductors
Electrical Specifications
Bourns Part No.
Inductance
µH)
L (µ
I rms
(A)
I sat
(A)
DCR
Ω) max.
(mΩ
SRP1250-R36M
SRP1250-R47M
SRP1250-R50M
SRP1250-R56M
SRP1250-R68M
SRP1040-R82M
SRP1250-1R0M
SRP1250-1R2M
SRP1250-1R5M
SRP1250-1R8M
SRP1250-2R2M
SRP1250-2R7M
SRP1250-3R3M
SRP1250-4R7M
SRP1250-6R0M
SRP1250-6R8M
SRP1250-7R8M
SRP1250-9R0M
SRP1250-100M
0.36
0.47
0.50
0.56
0.68
0.82
1.00
1.20
1.50
1.80
2.20
2.70
3.30
4.70
6.00
6.80
7.80
9.00
10.0
41
38
36
36
34
31
29
27
23
21
20
17
15
12
9.5
11
10
10
9
75
65
55
55
54
53
50
49
48
40
32
32
32
27
14
21
18
18
16
1.1
1.3
1.5
1.5
1.7
2.3
2.5
3.3
4.1
4.7
5.5
7.3
9.2
15.0
10.0
18.5
20.5
22.5
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...............................................Ferrite
Wire .............................Enameled copper
Terminal .........................................Cu/Sn
Rated Current.......Ind. drops 20 % at I sat
Temperature Rise..........40 ˚C at rated I rms
Packaging .......500 pcs. per 13-inch reel
Product Dimensions
13.5
(0.531)
MAX.
1R5
Soldering Profile
Temperature (°C)
275
<1> Maximum of 10 seconds
between +255 °C and +260 °C
225
5.9
MAX.
(.232)
5.2
(.205) MAX.
13.9
MAX.
(0.547)
12.7 ± 0.3
(0.500 ± 0.012)
12.7 ± 0.3
(0.500 ± 0.012)
260 °C peak
<1> 255 °C
220 °C
190°C
60 seconds
maximum
175
Ramp Down
5 °C/second
150 °C
3.0 ± 0.5
(0.118 ± 0.020)
125
120-150 seconds
2.5 ± 0.5
(0.098 ± 0.020)
10 seconds minimum
75
Recommended Layout
Ramp Up
4 °C/second maximum
25
0
50
100
150
200
250
300
15.0
(0.591)
Time (Seconds)
4.5
(.177)
Electrical Schematic
7.0
(.276)
DIMENSIONS:
*RoHS Directive 2002/95/EC Jan 27 2003 including Annex
Specifications are subject to change without notice.
Customers should verify actual device performance in their specific applications.
MM
(INCHES)
SRP1250 Series - Shielded Power Inductors
5
10
10
15
20
25
30
35
40
45
50
0
5
10 15
20
5
10
15
20
25
35
40
45
50
0.4
40
20
40
0.4
0
32
0
40
5
0.18
0.15
0.11
0.09
0.06
10
15
20
40
0.24
20
10.6
21.2
31.8
5
10
15
20
25
25
30
35
108
96
84
72
60
48
36
24
12
0
40
30
108
96
84
72
0
4
8
12
15
DC Current (A)
30
35
SRP1250-2R7M
4.0
0
53
120
108
96
84
72
60
48
36
24
12
0
40
20
24
60
48
36
24
12
0
28
140
120
3.2
100
2.4
80
1.6
60
40
0.8
20
0
0
8
16
10
0
32
24
DC Current (A)
25
Temperature Rise (°C)
Inductance (µH)
Temperature Rise (°C)
0
SRP1250-6R0M
20
42.4
SRP1250-1R5M
SRP1250-4R7M
15
100
0.48
SRP1250-3R3M
DC Current (A)
55
60
DC Current (A)
10
50
80
DC Current (A)
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
45
0.72
0.30
0.27
0.24
0.21
0.18
0.15
0.12
0.09
0.06
0.03
0
SRP1250-2R2M
5
40
DC Current (A)
0.21
0
30
0.96
0
0
50
40
0
108
96
84
72
60
48
36
24
12
0
0
30
0.03
Inductance (µH)
Inductance (µH)
0.40
0.36
0.32
0.28
0.24
0.20
0.16
0.12
0.8
0.4
0
24
Inductance (µH)
0.8
Temperature Rise (°C)
80
1.2
25
0
160
80
10
20
DC Current (A)
0.8
0.24
Temperature Rise (°C)
Inductance (µH)
120
1.5
16
50 55
0
160
2.0
8
40 45
120
0
15
SRP1250-R82M
1.2
DC Current (A)
SRP1250-1R8M
0
35
1.2
DC Current (A)
2.4
30
SRP1250-1R2M
1.6
Inductance (µH)
110
99
88
77
66
55
44
33
22
11
0
60
Temperature Rise (°C)
Inductance (µH)
0
10
DC Current (A)
DC Current (A)
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
25
110
99
88
77
66
55
44
33
22
11
0
60
Inductance (µH)
Inductance (µH)
SRP1250-R68M
0.80
0.72
0.64
0.56
0.48
0.40
0.32
0.24
0.16
0.08
0
Inductance (µH)
5
5
DC Current (A)
Inductance (µH)
0
110
99
88
77
66
55
44
33
22
11
0
55
Temperature Rise (°C)
Inductance (µH)
SRP1250-R56M
0.60
0.54
0.48
0.42
0.36
0.30
0.24
0.18
0.12
0.06
0
0
DC Current (A)
Temperature Rise (°C)
0
Temperature Rise (°C)
50 55
110
99
88
77
66
55
44
33
22
11
0
60
100
8
80
6
60
4
40
2
20
0
0
2.8
5.6
8.4
Temperature Rise (°C)
40 45
SRP1250-R50M
0.60
0.54
0.48
0.42
0.36
0.30
0.24
0.18
0.12
0.06
0
11.2
Temperature Rise (°C)
35
Inductance (µH)
30
DC Current (A)
Temperature Rise (°C)
20 25
Temperature Rise (°C)
10 15
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)
5
SRP1250-R47M
0.60
0.54
0.48
0.42
0.36
0.30
0.24
0.18
0.12
0.06
0
Temperature Rise (°C)
0
110
99
88
77
66
55
44
33
22
11
0
60
Inductance (µH)
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)
L vs. I Charts
0
14
DC Current (A)
Specifications are subject to change without notice.
Customers should verify actual device performance in their specific applications.
SRP1250 Series - Shielded Power Inductors
L vs. I Charts
5.0
60
4.0
48
3.0
36
2.0
24
1.0
12
0
21
0
0
3
6
9
12
15
18
96
84
72
60
48
36
24
0
2
4
6
0
2
4
6
8
100
90
80
70
60
50
40
10
12
14
30
20
10
0
16
12
14
16
120
100
12
80
60
8
40
4
20
0
0
3
6
9
12
15
0
18
DC Current (A)
Temperature Rise (°C)
Inductance (µH)
SRP1250-100M
10
16
DC Current (A)
DC Current (A)
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
8
12
0
18
SRP1250-9R0M
DC Current (A)
Packaging Specifications
330.0
(13.00)
DIA.
2.0 ± 0.5
(.079 ± .020)
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)
2.0 ± 0.1
(0.079 ± 0.004)
4.0 ± 0.1
(0.157 ± 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)
13.5 ± 0.1
(0.520 ± 0.004)
0.15
DIA.
(0.0006)
DIMENSIONS:
REV. 12/07
Specifications are subject to change without notice.
Customers should verify actual device performance in their specific applications.
MM
(INCHES)
16.0 ± 0.1
(0.629 ± 0.004)
24.0 ± 0.3
(0.95 ± 0.012)
Temperature Rise (°C)
72
10.0
9.0
8.0
7.0
6.0
5.0
4.0
3.0
2.0
1.0
0
Inductance (µH)
6.0
SRP1250-7R8M
Temperature Rise (°C)
84
Inductance (µH)
96
7.0
Temperature Rise (°C)
8.0
Inductance (µH)
( )
SRP1250-6R8M