& *R
AE oH
C- S C
Q2 O
00 MP
QU LI
AL ANT
IF
IE
D
Features
■
Shielded construction
■
Inductance range: 1 to 150 µH
■
Heating current up to 7 A
■
AEC-Q200 qualified
■
RoHS compliant* and halogen free**
Applications
■
Automotive systems:
100
- Driver assistant
- Information
- Entertainment
- Lighting
■
DC/DC converters
■
Power supplies
SRU1028A Series - Shielded Power Inductors
Electrical Specifications @ 25 °C
Bourns
Part Number
Inductance
@ 100 KHz / 1 V
L (µH)
Tol. (%)
Q
(Ref.)
Test
Freq.
(MHz)
SRF
(MHz)
Typ.
DCR
(mΩ)
Max.
I rms
(A)
I sat
(A)
General Specifications
Operating Temperature
................................-40 °C to +125 °C
(Temperature rise included)
Storage Temperature
................................-40 °C to +125 °C
Resistance to Soldering Heat
............................. +250 °C for 10 sec.
Temperature Rise
......................40 °C typ. at rated I rms
Inductance Drop .......... 35 % typ. at I sat
Materials
Core ..............................................Ferrite
Wire ............................Enameled copper
Terminal Finish .........................Ag/Ni/Sn
Packaging .................. 1000 pcs. per reel
Product Dimensions
10.0 ± 0.3
(.394 ± .012)
SRU1028A-1R0Y
SRU1028A-1R5Y
SRU1028A-2R2Y
SRU1028A-3R3Y
SRU1028A-4R7Y
SRU1028A-6R8Y
SRU1028A-8R2Y
SRU1028A-100Y
SRU1028A-150Y
SRU1028A-220Y
SRU1028A-330Y
SRU1028A-470Y
SRU1028A-560Y
SRU1028A-680Y
SRU1028A-820Y
SRU1028A-101Y
SRU1028A-121Y
SRU1028A-151Y
1.0
1.5
2.2
3.3
4.7
6.8
8.2
10
15
22
33
47
56
68
82
100
120
150
±30
±30
±30
±30
±30
±30
±30
±30
±30
±30
±30
±30
±30
±30
±30
±30
±30
±30
14
12
12
14
12
12
12
20
26
26
24
20
22
20
20
20
18
18
7.96
7.96
7.96
7.96
7.96
7.96
7.96
2.52
2.52
2.52
2.52
2.52
2.52
2.52
2.52
0.796
0.796
0.796
100
80
65
55
40
30
28
25
22
16
12
11
10
9
8
7
6
5
6.5
10.0
15.0
20.0
23.0
33.0
37.0
53.0
90.0
135.0
180.0
230.0
270.0
300.0
420.0
470.0
560.0
680.0
7.00
6.50
5.30
4.60
4.50
3.50
3.30
2.80
2.00
1.60
1.25
1.30
1.10
1.00
0.90
0.85
0.70
0.65
8.00
6.50
4.80
4.30
3.80
3.00
2.70
2.40
2.00
1.40
1.20
1.10
1.00
0.90
0.85
0.80
0.70
0.65
T
10.0 ± 0.3
(.394 ± .012)
How to Order
Electrical Schematic
SRU1028A - 100Y
Model
Value Code (see table)
2.8 ± 0.3
(.110 ± .012)
Inductor Connection
7.4
TYP.
(.291)
3.4
(.134)
TYP.
T
T
LCR METER
3.2
(.126)
TYP.
3.4
TYP.
(.134)
Recommended Layout
Asia-Pacific:
Tel: +886-2 2562-4117 • Fax: +886-2 2562-4116
Europe:
Tel: +41-41 768 5555 • Fax: +41-41 768 5510
The Americas:
Tel: +1-951 781-5500 • Fax: +1-951 781-5700
www.bourns.com
7.2
(.283)
1.8
(.071)
1.8
(.071)
4.0
(.157)
* 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.
DIMENSIONS:
MM
(INCHES)
T
SRU1028A Series
Line Filter
SRF0504 Series
- 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
max.
Max. Peak
Temperature -5
30 sec. max.
Max. Time Above
217 :
60~150 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)
L vs. IDC
1.5
1.2
SRU1028A-1R0Y
L @ 25
℃
L @ 125
℃
18.0
16.0
14.0
SRU1028A-150Y
L @ 25
℃
L @ 125
℃
L (uH)
0.9
0.6
0.3
0.0
0.0
L (uH)
12.0
10.0
8.0
6.0
4.0
2.0
3.0
6.0
9.0
12.0
15.0
0.0
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
IDC (A)
IDC (A)
SRU1028A-6R8Y
8.0
7.0
6.0
L @ 25
℃
L @ 125
℃
SRU1028A-101Y
120.0
L @ 25
℃
100.0
80.0
L @ 125
℃
L (uH)
L (uH)
5.0
4.0
3.0
2.0
1.0
0.0
0.0
2.0
4.0
6.0
8.0
60.0
40.0
20.0
0.0
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
IDC (A)
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.
SRU1028A Series - Shielded Power Inductors
Temperature vs. IDC
SRU1028A-1R0Y
70.0
60.0
50.0
T @ 25
℃
50.0
40.0
60.0
T @ 25
℃
SRU1028A-150Y
T (°C)
40.0
30.0
20.0
10.0
0.0
0.0
T (°C)
30.0
20.0
10.0
0.0
0.0
3.0
6.0
9.0
12.0
15.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
IDC (A)
IDC (A)
80.0
70.0
60.0
SRU1028A-6R8Y
T @ 25
℃
70.0
60.0
50.0
SRU1028A-101Y
T @ 25
℃
T (°C)
T (°C)
50.0
40.0
30.0
20.0
10.0
0.0
0.0
2.0
4.0
6.0
8.0
40.0
30.0
20.0
10.0
0.0
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
IDC (A)
IDC (A)
Packaging Specifications
330
DIA.
(12.99)
2.0 ± 0.5
(.079 ± .020)
30.4
(1.20)
13.0 ± 0.5
(.512 ± .020)
DIA.
50 -0
(1.969 -0)
13.0 ± 0.5
DIA.
(.512 ± .020)
26 +0
(1.02 +0)
END
21.0 ± 0.8
(.827 ± .031)
4
(.157)
24
(.945)
START
USER DIRECTION OF FEED
QTY: 1000 PCS. PER REEL
DIMENSIONS:
16
(.63)
NO COMPONENT
NO COMPONENT
COMPONENTS
MM
(INCHES)
200
(7.874)
400
(15.748)
REV. 09/13
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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