SRP1204 Series - Shielded Power Inductors
*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
2.0
1.0
1.5
0.5
2.0
05
10 15
DC Current (A)
Inductance (µH)
R50
1R1
1R8
Features
■Shielded construction
■Unit height of 4 mm
■Inductance range: 0.5 µH to 1.8 µH
■Current up to 13 A
■RoHS compliant*
Applications
■Input/output of DC/DC converters
■Power supplies for:
•Portable communications equipment
•Camcorders
•LCD TVs
•Car audio systems
Electrical Specifications
Product Dimensions
12.50 ± 0.30
(0.492 ± 0.012)
4.15
(0.163)
13.0
(0.512)
3.75
(0.148)
10.50
(0.413)
3.0
(0.118)
4.50
(0.177)
7.50 ± 0.25
(0.295 ± 0.010)
7.50
(0.295)
12.50 ± 0.30
(0.492 ± 0.012)
2.00
(0.079)
REF.
5.20
(0.205)
REF.
CLIP (for mounting - no electrical connection)
1
2.50
(0.098)
NOM.
6.40
(0.252) REF.
3.00
(0.118)
NOM.
4.00 ± 0.20
(0.157 ± 0.008)
1.90 ± 0.20
(0.748 ± 0.008)
4.70
(0.185)
REF.
REF.
REF.
REF.
4.15
(0.163)REF.
REF.
REF.
REF.
3.75
(0.148)REF.
REF.
R50
2
3
3
General Specifications
Test Voltage........................................1 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 ER
Wire .............................Enameled copper
Terminal.....................................Cu/Ni/Sn
Rated Current.......Ind. drops 20 % at I sat
Temperature Rise..........40 ˚C at rated I rms
Packaging .......800 pcs. per 13-inch reel
Recommended Layout
Electrical Schematic
Initial Inductance Flat Point
Bourns Part No. Inductance at Flat Point ref. I rms I sat DCR
L0 (µH) L1 (µH) (A) (A) (A) (mΩ) max.
SRP1204-R50M 0.75 ± 20 % 0.55 ± 20 % 2.0 13.0 14.0 3.0
SRP1204-1R1M 1.30 ± 20 % 1.10 ± 20 % 2.0 12.0 13.0 4.5
SRP1204-1R8M 2.00 ± 20 % 1.80 ± 20 % 2.0 10.0 11.0 6.0
*RoHS COMPLIANT
DIMENSIONS: MM
(INCHES)
R50
Specifications are subject to change without notice.
Customers should verify actual device performance in their specific applications.
REV. 05/11
SRP1204 Series - Shielded Power Inductors
Packaging Specifications
26.0 - 0
(1.02 - 0)
30.4
(1.197)
2.0 ± 0.5
(.079 ± .020)
50.0 - 0
(1.97 - 0)
330.0
(13.00)
DIA.
13.0
(.51) DIA.
13.0
(.51)
DIA.
21.0 ± 0.8
(.827 ± .031)
EMBOSSED
CARRIER
EMBOSSED
CAVITY
0.10
(.004)
THICKNESS
MAX.
DIMENSIONS: MM
(INCHES)
4.0
(0.157)
16.0
(0.630)
R50 R50 R50 R50 R50
END START
USER DIRECTION OF FEED
200
(7.874)
NO COMPONENT
MIN. MIN.
NO COMPONENT
COMPONENTS 400
(15.748)
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
