*
A E Ro H
C- S C
Q2 O
0 0 MP
QU LI A
AL NT
IF
IE
D
Features
■ Shielded construction
&
■ Inductance range: 1 to 150 µH
■ Heating current up to 7 A
■ AEC-Q200 qualified
100
■ RoHS compliant* and halogen free**
SRU1028A Series - Shielded Power Inductors
Electrical Specifications @ 25 °C
Bourns
Part Number
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
Inductance
@ 100 KHz / 1 V
L (μH)
Tol. (%)
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
General Specifications
Q
(Ref.)
Test
Freq.
(MHz)
SRF
(MHz)
Typ.
DCR
(mΩ)
Max.
I rms
(A)
I sat
(A)
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
±30
±30
±30
±30
±30
±30
±30
±30
±30
±30
±30
±30
±30
±30
±30
±30
±30
±30
How to Order
Operating Temperature
................................-40 °C to +125 °C
(Temperature rise included)
Storage Temperature
................................-40 °C to +125 °C
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)
10.0 ± 0.3
(.394 ± .012)
Electrical Schematic
SRU1028A - 100Y
2.8 ± 0.3
(.110 ± .012)
Model
Value Code (see table)
Inductor Connection
7.4
TYP.
(.291)
3.4
(.134)
TYP.
3.2
(.126)
TYP.
3.4
TYP.
(.134)
LCR METER
Recommended Layout
Asia-Pacific: Tel: +886-2 2562-4117 • Email: asiacus@bourns.com
EMEA: Tel: +36 88 885 877 • Email: eurocus@bourns.com
The Americas: Tel: +1-951 781-5500 • Email: americus@bourns.com
www.bourns.com
7.2
(.283)
1.8
(.071)
1.8
(.071)
4.0
(.157)
WARNING Cancer and Reproductive Harm www.P65Warnings.ca.gov
* RoHS Directive 2015/863, Mar 31, 2015 and Annex.
** 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. Users should verify actual device performance in their specific
applications. The products described herein and this document are subject to specific legal disclaimers as set forth on the
last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf.
DIMENSIONS:
MM
(INCHES)
SRU1028A Series - Shielded Power Inductors
Soldering Profile
Temperature
Rising Area
Preheat
Area
Reflow
Area
Forced
Cooling Area
+4.0 °C/Sec. Max.
150~200 °C / 60~120 Sec.
+3.0 °C/Sec. Max.
-(1.0~5.0) °C/Sec. Max.
250
Temperature (°C)
Peak Temperature
250 max.
Peak Temperature: 250 °C
217 °C
60~150 Sec.
200
Max. Peak
Temperature -5
30 sec. max.
60 Sec.
Max.
150
60~120 Sec.
100
Max. Time Above
217 :
60~150 sec. max.
50
50
0
100
150
200
250
Time (Seconds)
L vs. IDC
1.5
SRU1028A-1R0Y
L @ 25 ℃
L @ 125 ℃
L @ 25 ℃
16.0
1.2
L @ 125 ℃
14.0
12.0
L (uH)
L (uH)
SRU1028A-150Y
18.0
0.9
10.0
8.0
0.6
6.0
4.0
0.3
2.0
0.0
0.0
8.0
7.0
3.0
6.0
IDC (A)
9.0
12.0
0.5
1.0
1.5
2.0
IDC (A)
2.5
3.0
3.5
SRU1028A-101Y
SRU1028A-6R8Y
L @ 25 ℃
0.0
0.0
15.0
120.0
L @ 125 ℃
L @ 25 ℃
L @ 125 ℃
100.0
80.0
5.0
L (uH)
L (uH)
6.0
4.0
3.0
60.0
40.0
2.0
20.0
1.0
0.0
0.0
2.0
4.0
IDC (A)
6.0
8.0
0.0
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
IDC (A)
Specifications are subject to change without notice.
Users should verify actual device performance in their specific applications.
The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf.
SRU1028A Series - Shielded Power Inductors
Temperature vs. IDC
SRU1028A-150Y
SRU1028A-1R0Y
70.0
60.0
T @ 25 ℃
60.0
40.0
T (°C)
T (°C)
50.0
40.0
30.0
10.0
10.0
3.0
6.0
9.0
IDC (A)
12.0
0.0
0.0
15.0
1.0
1.5
2.0
2.5
3.0
3.5
1.2
1.4
SRU1028A-101Y
70.0
T @ 25 ℃
70.0
0.5
IDC (A)
SRU1028A-6R8Y
80.0
T @ 25 ℃
60.0
60.0
50.0
50.0
T (°C)
T (°C)
30.0
20.0
20.0
0.0
0.0
T @ 25 ℃
50.0
40.0
40.0
30.0
30.0
20.0
20.0
10.0
10.0
0.0
0.0
2.0
4.0
IDC (A)
6.0
0.0
0.0
8.0
0.2
0.4
0.6
0.8
1.0
IDC (A)
Packaging Specifications
330
DIA.
(12.99)
2.0 ± 0.5
(.079 ± .020)
21.0 ± 0.8
(.827 ± .031)
30.4
(1.20)
13.0 ± 0.5
(.512 ± .020)
DIA.
50 -0
(1.969 -0)
13.0 ± 0.5
DIA.
(.512 ± .020)
24
(.945)
26 +0
(1.02 +0)
4
(.157)
END
START
USER DIRECTION OF FEED
QTY: 1000 PCS. PER REEL
16
(.63)
NO COMPONENT
REV. 11/19
200
(7.874)
NO COMPONENT
COMPONENTS
400
(15.748)
DIMENSIONS:
MM
(INCHES)
Specifications are subject to change without notice.
Users should verify actual device performance in their specific applications.
The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf.
Legal Disclaimer Notice
This legal disclaimer applies to purchasers and users of Bourns® products manufactured by or on behalf of Bourns, Inc. and
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Unless otherwise expressly indicated in writing, Bourns® products and data sheets relating thereto are subject to change
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