*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.
L vs. I Charts
0
0 5 10 15 20 25 30 35 40 45 50
0.05
0.1
0.15
0.2
0.25
0.3
0.35
0.4
0
10
20
30
40
50
60
70
80
Inductance (µH)
DC Current (A)
SRP1050-R10
Temperature Rise (°C)
0
0 5 10 15 20 25 30 35 40 45 50
0.05
0.1
0.15
0.2
0.25
0.3
0.35
0.4
0
10
20
30
40
50
60
70
80
Inductance (µH)
DC Current (A)
SRP1050-R15
Temperature Rise (°C)
*RoHS COMPLIANT
SRP1050 Series - Shielded Power Inductors
Features
■Shielded construction
■Unit height of 5.0 mm
■Inductance range: 0.10 µH to 0.2 µH
■Current up to 40 A
■Lead free
■RoHS compliant*
Electrical Specifications
Product Dimensions
R10
10.2
(0.402) MAX.
MAX.
MAX.
5.0
(0.197)
2.5 ± 0.5
(0.098 ± 0.020)
6.8
(.268)
1.5 ± 0.5
(0.059 ± 0.020)
General Specifications
Test Voltage.....................................0.1 V
Test Frequency..............................1 MHz
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 .......900 pcs. per 13-inch reel
Recommended Layout
Electrical Schematic
Inductance Test Frequency I rms I sat DCR
Bourns Part No. L (µH) (Hz) (A) (A) max. (mΩ) max.
SRP1050-R10M 0.10 ± 20 % 1 M 40 50 0.65
SRP1050-R15M 0.15 ± 20 % 1 M 40 42 0.65
SRP1050-R20M 0.20 ± 20 % 1 M 30 40 0.65
*RoHS COMPLIANT
DIMENSIONS: MM
(INCHES)
10.5
(0.414)
5.5
(0.217)
4.5
(0.177)
0
0 5 10 15 20 25 30 35 40 45
0.1
0.2
0.3
0.4
0.5
0.5
0
10
20
30
40
50
60
Inductance (µH)
DC Current (A)
SRP1050-R20
Temperature Rise (°C)
The SRP1050 Series is obsolete
and not recommended for new
designs.
OBSOLETE
Specifications are subject to change without notice.
Customers should verify actual device performance in their specific applications.
REV. 08/08
SRP1050 Series - Shielded Power Inductors
Applications
■Input/output of DC/DC converters
■Power supplies for:
•Portable communications equipment
•Camcorders
•LCD TVs
•Car audio systems
Packaging Specifications
24.0 ± 0.5
(0.95 ± 0.02)
2.0 ± 0.5
(.079 ± .020)
75.0 ± 2.0
(2.96 ± 0.08)
330.0
(13.00)
DIA.
13.0 ± 0.5
(.512 ± .020)DIA.
13.5 ± 0.5
(.53 ± .020)
DIA.
21.0 ± 0.8
(.827 ± .031)
EMBOSSED
CARRIER
EMBOSSED
CAVITY
0.10
(.004)
THICKNESS
MAX.
DIMENSIONS: MM
(INCHES)
7.2 ± 0.1
(0.283 ± 0.004)
0.35 ± 0.05
(0.014 ± 0.020)
5.4 ± 0.1
(0.213 ± 0.004)
10.6 ± 0.1
(0.417 ± 0.004)
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.
0.15
(0.0006) DIA.
12.0 ± 0.1
(0.472 ± 0.004)
24.0 ± 0.3
(0.95 ± 0.012)
1.75 ± 0.1
(.069 ± 0.004)
8.4 ± 0.5
(.331 ± 0.020)
Soldering Profile
25
75
125
175
225
275
0 50 100 150 200 250 300
Time (Seconds)
Temperature (°C)
120-150 seconds
60 seconds
maximum
260 °C peak
190°C
150 °C
220 °C
Ramp Down
5 °C/second
<1> 255 °C
<1> Maximum of 10 seconds
between +255 °C and +260 °C
Ramp Up
4 °C/second maximum
10 seconds minimum
OBSOLETE
