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Features
■
Multiple configurations: parallel, series,
■
■
■
■
■
Applications
■
Automotive systems:
470
dual-inductor and transformer
Magnetically shielded, low radiation
Inductance range: 8.2 to 600
μH
Heating current up to 2.19 A
AEC-Q200 qualified
RoHS compliant* and halogen free**
- Driver assistant
- Information
- Entertainment
- Lighting
■
DC/DC converters
■
Power supplies
■
SEPIC - DC/DC converters
SRF0703A Series -
Dual-Winding Shielded Power Inductors
Electrical Specifications @ 25 °C
Parallel Rating
Inductance
@ 100 kHz /
0.25 V
L (μH) ±20 %
DCR
(Ω)
Max.
Series Rating
Inductance
@ 100 kHz /
0.25 V
L (μH) ±20 %
DCR
(Ω)
Max.
General Specifications
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
Materials
Core ..............................................Ferrite
Wire ............................Enameled copper
Terminal Finish ...................................Sn
Packaging .................. 1500 pcs. per reel
Product Dimensions
7.6
MAX.
(.299)
Bourns Part No.
Irms
(A)
Isat
(A)
Irms
(A)
Isat
(A)
SRF0703A-8R2M
SRF0703A-100M
SRF0703A-150M
SRF0703A-220M
SRF0703A-330M
SRF0703A-470M
SRF0703A-680M
SRF0703A-820M
SRF0703A-101M
SRF0703A-151M
SRF0703A-221M
SRF0703A-331M
8.2
10
15
22
33
47
68
82
100
150
220
330
0.0772
0.0826
0.119
0.15
0.24
0.338
0.507
0.61
0.715
0.986
1.48
2.16
2.19
2.08
1.83
1.62
1.31
1.08
0.89
0.86
0.73
0.58
0.52
0.42
2.66
2.47
2.05
1.67
1.35
1.14
0.96
0.89
0.79
0.65
0.53
0.44
34.1
39.6
59.6
89.5
140.5
194.2
289.3
324.7
397.6
608.2
922.6
1335
0.306
0.342
0.47
0.62
1.0
1.28
1.92
2.28
2.64
3.63
5.5
8.25
1.1
1.04
0.916
0.811
0.653
0.542
0.444
0.43
0.367
0.289
0.26
0.211
1.33
1.24
1.03
0.83
0.68
0.57
0.48
0.44
0.39
0.32
0.27
0.22
Electrical Schematics
1
2
1
2
1
2
8R2
4
7.6
(.299)
MAX.
N1
N2
N1
N2
N1
N2
3
4
3
4
3
PARALLEL
SERIES
3.4 ± 0.2
(.134 ± .008)
Recommended Layout
0.4
(.016)
3.0
(.118)
0.4
(.016)
3.0
(.118)
2.7
(.106)
TYP.
2.9
TYP.
(.114)
1
2
2
1
7.9
(.311)
2
1
7.9
(.311)
DIMENSIONS:
MM
(INCHES)
3
1.4
(.055)
4
1.4
(.055)
3
4
4
3
1.0
TYP.
(.039)
DUAL INDUCTOR MODE
SERIES MODE
DIMENSIONS:
MM
(INCHES)
How to Order
SRF0703A - 100M
Model
Value Code (see table)
* 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.
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
60.0
40.0
20.0
0.0
0.0
SRF0703A-680M
L @ 25 °C
L @ 125 °C
L (µH)
L (µH)
15.0
10.0
5.0
0.0
0.0
0.8
1.6
2.4
3.2
0.5
1.0
1.5
2.0
L (µH)
0.3
0.6
0.9
1.2
IDC (A)
SRF0703A-151M
L @ 25 °C
200.0
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
ΔT
@ 25 °C
80.0
SRF0703A-220M
ΔT
@ 25 °C
60.0
50.0
60.0
40.0
SRF0703A-680M
ΔT
@ 25 °C
ΔT
(°C)
ΔT
(°C)
40.0
ΔT
(°C)
60.0
40.0
20.0
0.0
0.0
0.8
1.6
2.4
3.2
30.0
20.0
20.0
10.0
0.0
0.0
0.5
1.0
1.5
2.0
0.0
0.0
0.3
0.6
0.9
1.2
IDC (A)
SRF0703A-151M
80.0
ΔT
@ 25 °C
IDC (A)
IDC (A)
60.0
ΔT
(°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
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
COMPONENTS
NO COMPONENT
200
(7.87)
400
(15.75)
USER DIRECTION OF FEED
QTY: 1500 PCS. PER REEL
MM
(INCHES)
REV. 03/15
DIMENSIONS:
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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