SRP4012

This series is currently available but
not recommended for new designs.
The newer Model SRP4012TA
series is recommended.
PL
IA
N
T
Features
CO
M
■ Shielded construction
*R
oH
S
■ Flat wire
■ Unit height of 1.2 mm
R2
2
■ Inductance range: 0.22 to 1.5 μH
■ Rated current up to 9 A
■ RoHS compliant* and halogen free**
SRP4012 Series - Shielded Power Inductors
Electrical Specifications
Bourns Part No.
Inductance
L (μH) ±20 %
I rms
(A)
I sat
(A)
DCR
(mΩ) Max.
SRP4012-R22M
SRP4012-R47M
0.22
9
10
9.3
0.47
6.5
9
20
SRP4012-R56M
0.56
5.5
8
25
SRP4012-1R0M
1.0
4.8
6.3
33.6
SRP4012-1R2M
1.2
3
6
45
SRP4012-1R5M
1.5
3
5.5
50
Materials
Core ..................................................Iron
Wire ............................Enameled copper
Terminal ........................................Cu/Sn
Rated Current .....Ind. drops 20 % at Isat
Temperature Rise .....40 °C at rated Irms
Packaging ..... 2000 pcs. per 13-inch reel
Soldering Profile
Temperature (°C)
275
<1> Maximum of 10 seconds
between +255 °C and +260 °C
225
260 °C peak
<1> 255 °C
220 °C
190°C
Ramp Down
5 °C/second
60 seconds
maximum
175
General Specifications
Test Voltage ..................................0.25 V
Test Frequency ......................... 100 KHz
Reflow Soldering .. 230 °C; 50 sec. max.
Operating Temperature
................................-55 °C to +125 °C
(Temperature rise included)
Storage Temperature
................................-55 °C to +125 °C
Resistance to Soldering Heat
............................. +260 °C for 10 sec.
150 °C
Product Dimensions
125
120-150 seconds
4.7
MAX.
(.185)
10 seconds minimum
75
Ramp Up
4 °C/second maximum
25
0
50
100
150
200
250
300
R22
Time (Seconds)
Electrical Schematic
4.0 ± 0.2
(.157 ± .008)
Recommended Layout
2.2
(.087)
6.0
(.236)
1.5
(.059)
4.0 ± 0.2
(.157 ± .008)
0.0 - 0.3
(0.0 - .012)
1.2
MAX.
(.047)
0.6 ± 0.1
(.024 ± .004)
Asia-Pacific: Tel: +886-2 2562-4117 • Fax: +886-2 2562-4116
EMEA: Tel: +36 88 520 390 • Fax: +36 88 520 211
The Americas: Tel: +1-951 781-5500 • Fax: +1-951 781-5700
www.bourns.com
1.0 ± 0.3
(.039 ± .012)
DIMENSIONS:
MM
(INCHES)
* RoHS Directive 2002/95/EC Jan. 27, 2003 including annex and RoHS Recast 2011/65/EU June 8, 2011.
**Bourns considers a product to be “halogen free” if (a) the Bromine (Br) content is 900 ppm or less; (b) the Chlorine (Cl) content is 900 ppm or less; and (c) the total Bromine (Br)
and Chlorine (Cl) content is 1500 ppm or less.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.
Applications
■ DC/DC converters
■ Power supplies for:
• Portable communications equipment
• Laptop computers
• Camcorders, HDTV, car audio
systems
• Video game consoles
SRP4012 Series - Shielded Power Inductors
L vs. I Charts
100
90
0.19
0.18
40
0.17
30
20
10
0
0.16
0.15
80
70
60
50
0.46
0.44
0.42
40
0.40
30
20
10
0
0.38
0.36
30
0.54
20
0.52
0.50
10
0.48
Inductance (μH)
0.56
Temperature Rise (°C)
40
0.58
Inductance (μH)
1.10
50
0.60
SRP4012-1R0M
1.00
0.95
0.90
0.85
0.80
0.75
0.70
0
0.46
100
90
80
70
60
50
40
30
20
10
0
1.05
Temperature Rise (°C)
DC Bias (A)
DC Bias (A)
SRP4012-R56M
0.62
100
90
0.48
Inductance (μH)
80
70
60
50
0.20
SRP4012-R47M
0.50
Temperature Rise (°C)
Inductance (μH)
0.21
Temperature Rise (°C)
SRP4012-R22M
0.22
DC Bias (A)
Inductance (μH)
1.15
1.10
1.05
1.00
0.95
0.90
SRP4012-1R5M
1.50
100
90
80
70
60
50
40
30
20
1.45
Inductance (μH)
100
90
80
70
60
50
40
30
20
10
0
Temperature Rise (°C)
SRP4012-1R2M
1.20
1.40
1.35
1.30
1.25
1.20
1.15
10
0
1.10
DC Bias (A)
Temperature Rise (°C)
DC Bias (A)
DC Bias (A)
Packaging Specifications
330.0
DIA.
(13.00)
2.0 ± 0.5
(.079 ± .020)
12.5 ± 0.5
(.492 ± .020)
THICKNESS
0.10
(.004)
MAX.
13.5 ± 0.5
(0.53 ± .020)
DIA.
EMBOSSED
CAVITY
100.0 ± 1.0
(3.937 ± .039)
13.5 ± 0.5
DIA.
(.53 ± .020)
EMBOSSED
CARRIER
0.3 ± 0.1
(.012 ± .004)
1.50 ± 0.1
(.059 ± .004)
4.0 ± 0.1
(.157 ± .004)
2.0 ± 0.1
(.079 ± .004)
1.75 ± 0.1
(.069 ± .004)
DIMENSIONS:
5.5 ± 0.1
(.217 ± .004)
MM
(INCHES)
USER DIRECTION OF FEED
QTY: 2000 PCS. PER REEL
1.7 ± 0.15
(.067 ± .006)
4.2 ± 0.1
(.165 ± .004)
R22
5.0 ± 0.1
(.197 ± .004)
12.0 ± 0.3
(.472 ± .012)
8.0 ± 0.1
(.315 ± .004)
REV. 03/15
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.