SRN4012

PL
IA
N
T
Features
This series is obsolete and
not recommended for new designs.
The Model SRN4012T Series is
the recommended alternative.
CO
M
■ Semi-shielded construction
*R
oH
S
■ Low profile: 1.2 mm
■ Inductance range: 0.47 to 22 µH
1.
0
■ Rated current up to 3.2 A
■ RoHS compliant* and halogen free**
SRN4012 Series - Semi-shielded Power Inductors
Electrical Specifications @ 25 °C
General Specifications
Inductance
@ 100 KHz / 0.1 V
DCR
(Ω)
Max.
Irms
(A)
Isat
(A)
Bourns Part No.
L (μH)
SRN4012-R47M
0.47
20
0.03
3.2
4
SRN4012-1R0M
1.0
20
0.045
2.2
2.8
Tol. %
SRN4012-1R5M
1.5
20
0.06
2
2.2
SRN4012-2R2M
2.2
20
0.072
1.9
1.65
SRN4012-3R3M
3.3
20
0.101
1.7
1.4
SRN4012-4R7M
4.7
20
0.114
1.5
1.2
SRN4012-6R8M
6.8
20
0.15
1.3
0.9
SRN4012-100M
10
SRN4012-220M
22
Soldering Profile
0.204
1.1
0.8
20
0.48
0.62
0.5
Preheating
Soldering
Temperature (°C)
Product Dimensions
4.0 ± 0.3
(.157 ± .012)
Natural Cooling
4.0 ± 0.3
(.157 ± .012)
60~150 Sec.
60~180
Sec.
1.2
(.047)
MAX.
1.65 ± 0.2
(.065 ± .008)
480 Sec. Max.
25
Core ..............................................Ferrite
Wire ............................Enameled copper
Terminal Finish ...................................Sn
Coating .................Magnetic epoxy resin
Packaging ..... 4000 pcs. per 13-inch reel
20~40 Sec.
Peak Temperature (260 °C, 40 Sec. Max.)
217 °C
Materials
E
T
E
L
O
S
B
O
20
Peak Temperature260 ഒ max.
Max. Peak Temperature 260 ഒ40 sec. max.
Max. Time Above 217 ഒ: 60~150 sec. max.
200 °C
150°C
Operating Temperature
................................. -40 °C to +125 °C
(Temperature rise included)
Storage Temperature .. -40 °C to +125 °C
Resistance to Solder Heat
...............................+260 °C for 40 sec.
Temperature Rise .....40 °C at rated Irms
Rated Current
............ Inductance drops 30 % at Isat
Time (Seconds)
Reflow Times: 3 Times Max.
Electrical Schematic
How to Order
SRN4012 - R47M
Model
Value Code (see table)
Recommended Layout
4.3
(.169)
*RoHS Directive 2002/95/EC Jan. 27, 2003 including annex and RoHS Recast 2011/65/EU June 8, 2011.
**Bourns follows the prevailing definition of “halogen free” in the industry. 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.
0.9
(.035)
DIMENSIONS:
4.3
(.169)
MM
(INCHES)
Applications
■ DC/DC converters
■ Notebook computers
■ Digital video cameras
■ HDDs
■ Cellphones
■ Televisions, LCD displays
SRF0504
Filter
SRN4012 Series
Series -- Line
Semi-shielded
Power Inductors
L vs. IDC
32
0.96
12
0.6
24
0.72
9
0.48
6
0.24
3
0
2.4
3.2
0
0
4.0
0
0.56
4.8
0.6
2.4
0
1.52
DC Current (A)
13.6
5.4
10.2
3.6
6.8
1.8
3.4
0
0.28
0.52
0.78
DC Current (A)
0
0
0.44
3.2
11.2
2.4
8.4
1.6
5.6
0.8
2.8
0.34
0.68
1.02
1.04
0
1.3
1.36
0
1.70
17.0
13.6
3.6
10.2
2.4
6.8
1.2
3.4
0
0
0.3
11.2
14.4
8.4
10.8
5.6
7.2
2.8
3.6
0
0.22
0.44
0.66
DC Current (A)
0.88
0
1.10
0.9
0.6
1.2
0
1.5
DC Current (A)
SRN4012-220M
28.0
18.0
0
0
2.20
4.8
SRN4012-100M
14.0
1.76
SRN4012-4R7M
6.0
14.0
0
1.32
0.88
DC Current (A)
0
Inductance (μH)
7.2
Inductance (μH)
0
1.90
17.0
0
4
DC Current (A)
SRN4012-6R8M
9.0
Inductance (μH)
7.2
1.2
Temperature Rise (°C)
1.8
1.14
8
0.6
E
T
E
L
O
S
B
O
9.6
Temperature Rise (°C)
Inductance (μH)
2.4
0.76
0
2.80
1.2
SRN4012-3R3M
4.0
12.0
0.38
2.24
Inductance (μH)
SRN4012-2R2M
0
1.68
12
DC Current (A)
DC Current (A)
3.0
1.12
1.8
Inductance (μH)
1.6
Temperature Rise (°C)
0.8
Temperature Rise (°C)
0
16
Temperature Rise (°C)
8
20
2.4
12.0
22.4
9.6
16.8
7.2
11.2
4.8
5.6
2.4
0
0
0.124
0.248
0.372
0.496
0
0.620
DC Current (A)
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.
Temperature Rise (°C)
16
0.2
SRN4012-1R5M
3.0
Inductance (μH)
0.4
15
Temperature Rise (°C)
0.8
Inductance (μH)
1.20
Temperature Rise (°C)
Inductance (μH)
SRN4012-1R0M
40
Temperature Rise (°C)
SRN4012-R47M
1.0
SRF0504
Filter
SRN4012 Series
Series -- Line
Semi-shielded
Power Inductors
Packaging Specifications
2.0 ± 0.5
(.079 ± .020)
330
DIA.
(12.99)
13.5
(.531)
DIA.
100.0 ± 2.0
(3.937 ± .079)
E
T
E
L
O
S
B
O
12.5 ± 0.5
(.492 ± .020)
1.75 ± 0.1
(.069 ± .004)
5.5 ± 0.1
(.217 ± .004)
12.0 ± 0.1
(.472 ± .004)
2.0 ± 0.1
(.079 ± .004)
4.0 ± 0.1
(.157 ± .004)
0.35 ± 0.05
(.014 ± .002)
8.0 ± 0.1
(.315 ± .004)
30 °
4.4 ± 0.1
(.173 ± .004)
1.4 ± 0.1
(.055 ± .004)
3°
4.4 ± 0.1
(.173 ± .004)
USER DIRECTION OF FEED
DIMENSIONS:
QTY: 4000 PCS. PER REEL
MM
(INCHES)
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
REV. 07/15
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.