AE C
C OM
AP
PR
OV
OM
& PL
A E IA N
C T,
CO *
M *H
PL AL
IA O
NT GE
N
FR
EE
3.4 ± 0.2
(.134 ±
n
Multiple configurations: parallel, series,
.008)
Features
Applications
n
Automotive systems:
- Driver assistant
*R
oH
S
2.7
(.106)
TYP.
470
2.9
TYP.
(.114)
1
2
dual-inductor and transformer
n
Magnetically shielded, low radiation
n
Inductance range: 8.2 to 600 μH
n
Heating current up to 2.19 A
n
AEC-Q200 compliant
n
RoHS compliant* and halogen free**
- Information
- Entertainment
- Lighting
n
DC/DC converters
n
Power supplies
n
SEPIC - DC/DC converters
C
4
3
1.0
SRF0703A Series - Dual-Winding Shielded Power Inductors
General Specifications
Inductance
@ 100 kHz /
0.25 V
L (μH) ±20 %
Series Rating
DCR
(W)
Max.
Irms
(A)
Isat
(A)
Electrical Specifications @ 25 °C
(.039) TYP.
Inductance
@ 100 kHz /
0.25 V
7.6
MAX.
L (μH) ±20 %
(.299)
Parallel Rating
DCR
(W)
Max.
Irms
(A)
Isat
(A)
Bourns Part No.
0.4
SRF0703A-8R2M
SRF0703A-100M
SRF0703A-220M
SRF0703A-330M
SRF0703A-470M
1.4
SRF0703A-820M
(.055)
(.016)
8.2
10
15
22
33
47
68
82
3.0
0.0772
2
SRF0703A-150M
8R2
100
150
220
330
1
0.119
0.0826
(.118)
2.19
2.08
1.83
(.016)
0.4
2.66
2.47
34.1
39.6
59.6
89.5
3.0
0.306
SRF0703A-680M
3
SRF0703A-101M
SRF0703A-151M
SRF0703A-221M
SRF0703A-331M
4
0.507
0.715
0.61
0.338
7.6
0.15
(.299)
1.62
7.9
0.24
MAX.
1.31
(.311)
2
2.05
1.67
1.35
1.14
1
0.342
0.47
0.62
1.28
1.92
2.28
2.64
3.63
8.25
5.5
(.118)
0.916
0.653
0.542
0.444
0.367
0.289
0.211
0.26
0.43
0.811
1.04
1.1
1.33
1.24
1.03
0.83
0.68
0.57
0.48
0.44
0.39
0.32
0.27
0.22
1.08
0.89
0.73
1.4
0.86
(.055)
140.5
194.2
289.3
324.7
397.6
608.2
922.6
1335
7.9
1.0
(.311)
3
0.96
0.89
0.79
0.65
0.53
0.44
4
Operating Temperature
................................-40 °C to +125 °C
(Temperature rise included)
Storage Temperature
................................-40 °C to +125 °C
Resistance to Solder Heat
............................. +250 °C for 10 sec.
Temperature Rise
.......................40 °C typ. at rated
I
rms
Inductance Drop ........... 30 % typ. at
I
sat
Hi-pot (N1-N2) ................500 Vac/60 Hz,
3 mA, 1 sec
Moisture Sensitivity Level .....................1
ESD Classification (HBM)................. N/A
Materials
Core ..............................................Ferrite
Wire ............................Enameled copper
Terminal Finish ...................................Sn
Packaging .................. 1500 pcs. per reel
Product Dimensions
DUAL INDUCTOR MODE
0.986
± 0.2
0.58
3.4
(.134
1.48
± .008)
0.52
SERIES MODE
2.16
0.42
Electrical Schematics
2.7
1
2
(.106)
1
TYP.
2.9
TYP.
(.114)
2
1
2
1
2
7.6
MAX.
(.299)
N1
N2
N1
N2
N1
N2
4
3
4
3
1.0
3
TYP.
(.039)
4
3
4
8R2
7.6
(.299)
MAX.
PARALLEL
SERIES
Recommended Layout
0.4
(.016)
3.0
(.118)
0.4
(.016)
3.0
(.118)
3.4 ± 0.2
(.134 ± .008)
2
1
7.9
(.311)
2
1
7.9
(.311)
MM
DIMENSIONS:
(INCHES)
2.9
TYP.
(.114)
2.7
(.106)
TYP.
1
2
3
1.4
(.055)
4
1.4
(.055)
3
4
SERIES MODE
DUAL INDUCTOR MODE
4
3
1.0
TYP.
(.039)
How to Order
SRF0703A - 100M
Model
1
Value Code (see table)
MM
DIMENSIONS:
(INCHES)
N1
2
1
2
1
2
* RoHS Directive 2002/95/EC Jan. 27, 2003 including annex and RoHS Recast 2011/65/EU June 8, 2011.
3.0
0.4
0.4
** 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)
(.118)
(.016)
(.016)
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.
N2
N1
N2
N2
Users should verify actual device performance in their specific applications.
N1
2
2
1
1
SRF0703A Series - Dual-Winding Shielded Power Inductors
Inductance vs. IDC
SRF0703A-8R2M
10.0
8.0
6.0
4.0
2.0
0.0
0.0
L @ 25 °C
L @ 125 °C
30.0
25.0
20.0
SRF0703A-220M
L @ 25 °C
L @ 125 °C
100.0
80.0
SRF0703A-680M
L @ 25 °C
L @ 125 °C
L (µH)
L (µH)
15.0
10.0
5.0
L (µH)
0.5
1.0
1.5
2.0
60.0
40.0
20.0
0.0
0.0
0.8
1.6
2.4
3.2
0.0
0.0
0.3
0.6
0.9
1.2
IDC (A)
SRF0703A-151M
200.0
L @ 25 °C
L @ 125 °C
IDC (A)
IDC (A)
150.0
L (µH)
100.0
50.0
0.0
0.0
0.2
0.4
0.6
0.8
IDC (A)
Temperature Rise vs. IDC
SRF0703A-8R2M
100.0
80.0
T @ 25 °C
80.0
60.0
40.0
SRF0703A-220M
T @ 25 °C
60.0
50.0
SRF0703A-680M
T @ 25 °C
T (°C)
T (°C)
40.0
T (°C)
60.0
40.0
20.0
0.0
30.0
20.0
20.0
0.0
10.0
0.0
0.5
1.0
1.5
2.0
0.0
0.0
0.3
0.6
0.9
1.2
0.0
0.8
1.6
2.4
3.2
IDC (A)
SRF0703A-151M
80.0
60.0
T @ 25 °C
IDC (A)
IDC (A)
T (°C)
40.0
20.0
0.0
0.0
0.2
0.4
0.6
0.8
IDC (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.
SRF0703A Series - Dual-Winding Shielded Power Inductors
Soldering Profile
Peak Temperature 250
max.
Max. Peak Temperature -5
30 sec. max.
Max. Time Above 217 : 60~150 sec. max.
Temperature
Rising Area
+4.0 °C/Sec. Max.
Preheat
Area
150~200 °C / 60~120 Sec.
Reflow
Area
+3.0 °C/Sec. Max.
Forced
Cooling Area
-(1.0~5.0) °C/Sec. Max.
250
Peak Temperature: 250 °C
217 °C
Peak Temperature:
250 ° C max.
Max. Peak Temperature -5 °C:
30 sec. max.
Max. Time Above 217 °C:
90-150 sec. max.
Temperature (°C)
200
150
100
50
60~120 Sec.
60~150 Sec.
60 Sec.
Max.
0
50
100
150
200
250
Time (Seconds)
Packaging Specifications
330
DIA.
(12.99)
2.0 ± 0.5
(.079 ± .020)
22.4
(.882)
13.0 ± 0.5
(.512 ± .020)
DIA.
50.0 -0
(1.97 -0)
13.0 ± 0.5
DIA.
(.512 ± .020)
18 +0
(.709 +0)
21.0 ± 0.8
(.827 ± .031)
16.0
(.630)
END
12.0
(.472)
4.0
(.157)
START
8R2
8R2
8R2
8R2
8R2
NO COMPONENT
200
(7.87)
COMPONENTS
NO COMPONENT
400
(15.75)
USER DIRECTION OF FEED
QTY: 1500 PCS. PER REEL
MM
DIMENSIONS:
(INCHES)
REV. 05/18
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.
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