SRP1205 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
8.0
4.0
6.0
2.0
0.0
0 10
20 30 40
DC Current (A)
Inductance (μH)
7R2
4R0
2R5
1R0
R30
Features
Shielded construction
Unit height of 5.6 mm
Inductance range: 0.3 μH to 7.2 μH
Current up to 18 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)
3.00
(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 fixed)
1
2.50
(0.098)
NOM.
6.40
(0.252)
REF.
2.00
(0.079)
NOM.
5.00
(0.197)
R30~1R0:
5.60
(0.220)
1R8~7R2: MAX. MAX.
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.
1R0
2
3
3
General Specifications
Test Voltage........................................1 V
Test Frequency ..........................100 KHz
Reflow Soldering .....230 ˚C; 50 sec max.
Operating Temperature ..-40 °C to +125 °C
(Temperature rise included)
Storage Temperature..-40 °C to +125 °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 .......600 pcs. per 13-inch reel
Recommended Layout
Electrical Schematic
Flat
Initial Inductance Point SRF
Bourns Part No. Inductance at Flat Point ref. typ. I rms I sat DCR
L0 (μH) L1 (μH) (A) (MHz) (A) (A) (mΩ) max.
SRP1205-R30Y 0.54 ± 25 % 0.30 ± 25 % 5.00 160 18.0 35.0 1.8
SRP1205-R60Y 0.85 ± 25 % 0.60 ± 25 % 5.00 95 16.0 27.0 2.5
SRP1205-1R0Y 1.25 ± 25 % 1.00 ± 25 % 5.00 75 14.0 22.0 3.4
SRP1205-1R8Y 2.00 ± 25 % 1.80 ± 25 % 2.00 55 13.0 16.0 3.4
SRP1205-2R5Y 2.70 ± 25 % 2.50 ± 25 % 2.00 40 11.5 12.0 3.4
SRP1205-3R3Y 3.50 ± 25 % 3.30 ± 25 % 2.00 40 11.0 11.8 5.4
SRP1205-4R0Y 4.20 ± 25 % 4.00 ± 25 % 3.00 35 10.5 8.3 5.4
SRP1205-5R6Y 5.80 ± 25 % 5.60 ± 25 % 2.00 30 8.5 8.0 11.4
SRP1205-7R2Y 7.40 ± 25 % 7.20 ± 25 % 2.00 30 8.3 7.5 13.5
*RoHS COMPLIANT
DIMENSIONS:
MM
(INCHES)
