*
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: 2.5 to 100 µH
■ Heating current up to 4.5 A
■ AEC-Q200 qualified
220
■ RoHS compliant* and halogen free**
SRU8028A Series - Shielded Power Inductors
Electrical Specifications @ 25 °C
Bourns
Part Number
Inductance
@ 100 KHz / 1 V
L (μH)
Tol. (%)
General Specifications
Q
(Ref.)
Test
Freq.
(MHz)
SRF
(MHz)
Typ.
DCR
(Ω)
Max.
I rms
(A)
I sat
(A)
SRU8028A-2R5Y
2.5
±30
15
7.96
65
0.018
4.5
4.2
SRU8028A-3R3Y
3.3
±30
12
7.96
60
0.023
3.6
3.5
SRU8028A-4R7Y
4.7
±30
15
7.96
50
0.026
3.7
3.2
SRU8028A-6R8Y
6.8
±30
13
7.96
40
0.045
2.8
2.5
SRU8028A-100Y
10
±30
22
2.52
35
0.057
2.6
2.2
SRU8028A-150Y
15
±30
20
2.52
25
0.085
2.0
1.7
SRU8028A-220Y
22
±30
22
2.52
20
0.13
1.6
1.5
SRU8028A-330Y
33
±30
20
2.52
15
0.185
1.3
1.1
SRU8028A-470Y
47
±30
14
2.52
12
0.23
1.2
1.0
SRU8028A-680Y
68
±30
23
2.52
9
0.39
0.85
0.8
SRU8028A-101Y
100
±30
20
0.796
8
0.50
0.75
0.7
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 .................. 1500 pcs. per reel
Product Dimensions
How to Order
Electrical Schematic
8.0 ± 0.3
(.315 ± .012)
SRU8028A - 100Y
Model
Value Code (see table)
8.0 ± 0.3
(.315 ± .012)
Inductor Connection
2.8 ± 0.3
(.110 ± .012)
6.0
TYP.
(.236)
LCR METER
2.5
(.098)
TYP.
2.8
(.110)
TYP.
DIMENSIONS:
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
MM
(INCHES)
2.5
TYP.
(.098)
Recommended Layout
5.8
(.228)
2.0
(.079)
2.0
(.079)
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.
3.2
(.126)
SRU8028A 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.
Temperature (°C)
Peak Temperature
250 °C max.
Peak Temperature: 250 °C
250
217 °C
60~150 Sec.
200
Max. Peak
Temperature -5 °C:
30 sec. max.
60 Sec.
Max.
150
60~120 Sec.
100
Max. Time Above
217 °C:
60~150 sec. max.
50
50
0
100
150
200
250
Time (Seconds)
L vs. IDC
SRU8028A-2R5Y
30.0
3.0
L @ 25 ℃
2.5
25.0
2.0
20.0
1.5
10.0
0.5
5.0
1.0
2.0
3.0
4.0
5.0
6.0
7.0
0.0
0.0
8.0
0.5
1.0
7.0
SRU8028A-6R8Y
L @ 25 ℃
100.0
L @ 125 ℃
90.0
2.5
SRU8028A-101Y
L @ 25 ℃
L @ 125 ℃
70.0
5.0
L (uH)
L (uH)
2.0
80.0
6.0
4.0
60.0
50.0
40.0
3.0
30.0
2.0
20.0
1.0
0.0
0.0
1.5
IDC (A)
IDC (A)
8.0
L @ 125 ℃
15.0
1.0
0.0
0.0
SRU8028A-220Y
L @ 125 ℃
L (uH)
L (uH)
L @ 25 ℃
10.0
1.0
2.0
IDC (A)
3.0
4.0
0.0
0.0
0.3
0.6
0.9
1.2
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.
SRU8028A Series - Shielded Power Inductors
Temperature vs. IDC
SRU8028A-2R5Y
80.0
70.0
T @ 25 ℃
70.0
T @ 25 ℃
60.0
60.0
50.0
50.0
T (°C)
T (°C)
SRU8028A-220Y
40.0
40.0
30.0
30.0
20.0
20.0
10.0
10.0
0.0
0.0
0.0
1.0
2.0
3.0
4.0
5.0
6.0
7.0
0.0
8.0
0.5
SRU8028A-6R8Y
60.0
70.0
T @ 25 ℃
1.5
2.0
2.5
SRU8028A-101Y
T @ 25 ℃
60.0
50.0
50.0
40.0
40.0
T (°C)
T (°C)
1.0
IDC (A)
IDC (A)
30.0
30.0
20.0
20.0
10.0
10.0
0.0
0.0
1.0
2.0
3.0
IDC (A)
0.0
0.00
4.0
0.30
0.60
IDC (A)
0.90
1.20
Packaging Specifications
330
DIA.
(12.99)
2.0 ± 0.5
(.079 ± .020)
22.4
(.882)
13.0 ± 0.5
(.512 ± .020)
DIA.
21.0 ± 0.8
(.827 ± .031)
50.0
(1.969)
13.0 ± 0.5
DIA.
(.512 ± .020)
4
(.157)
ND
16
(.630)
18
(.709)
START
USER DIRECTION OF FEED
QTY: 1500 PCS. PER REEL
12
(.472)
NO COMPONENT
200
(7.874)
NO COMPONENT
COMPONENTS
DIMENSIONS:
MM
(INCHES)
400
(15.748)
REV. 11/19
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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