*
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: 10 to 33 µH
■ Heating current up to 0.7 A
100
■ AEC-Q200 qualified
■ RoHS compliant* and halogen free**
SRU3028A Series - Shielded Power Inductors
Electrical Specifications @ 25 °C
Bourns
Part Number
SRU3028A-100Y
Inductance
@ 100 KHz / 0.1 V
L (μH)
Tol. (%)
10
General Specifications
Q
(Ref.)
Test
Freq.
(MHz)
SRF
(MHz)
Typ.
DCR
(Ω)
Max.
I rms
(A)
I sat
(A)
20
2.52
35
0.20
0.72
0.86
±30
SRU3028A-150Y
15
±30
18
2.52
25
0.29
0.66
0.72
SRU3028A-220Y
22
±30
18
2.52
15
0.335
0.60
0.62
SRU3028A-330Y
33
±30
20
2.52
10
0.56
0.47
0.48
How to Order
Recommended Layout
SRU3028A - 100Y
Materials
Core ..............................................Ferrite
Wire ............................Enameled copper
Terminal Finish .........................Ag/Ni/Sn
Packaging .................... 600 pcs. per reel
4.2
(.165)
Model
Value Code (see table)
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
1.8
(.071)
Inductor Connection
Product Dimensions
3.5 ± 0.2
(.138 ± .008)
1.2
(.047)
100
LC
R
M
ET
ER
1.3
(.051)
3.3 ± 0.2
(.130 ± .008)
2.8 ± 0.2
(.110 ± .008)
0.5
TYP.
(.020)
1.1
(.043)
TYP.
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
2.30
TYP.
(.091)
TYP.
0.5
(.020)
DIMENSIONS:
MM
(INCHES)
Electrical Schematic
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.
SRU3028A Series - Shielded Power Inductors
Soldering Profile
Inductance vs. DC Current Plot
10 3
7
5
Peak Temperature 250 max.
Max. Peak Temperature -5
30 sec. max.
Max. Time Above 217 : 60~150 sec. max.
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.
Inductance (µH)
2
Peak Temperature: 250 °C
250
Temperature (°C)
3
217 °C
60~150 Sec.
200
60 Sec.
Max.
150
60~120 Sec.
100
50
10 2
7
5
3
2
10 1
7
5
-100Y
3
2
0
50
100
150
200
250
10 0
Time (Seconds)
10 -2
2
3
5
7 10 -1
2
3
5
7 10 0
2
3
5 7 1 01
DC Current (A)
Packaging Specifications
178
DIA.
(7.008)
2.0 ± 0.5
(.079 ± .020)
16.5
(.650)
13.0
(.512)
DIA.
21.0 ± 0.8
(.827 ± .031)
50 -0
(1.969 -0)
13.0
DIA.
(.512)
12
(.472)
14 +0
(.551 +0)
4
(.157)
END
100
100
START
100
8
(.315)
NO COMPONENT
200
(7.874)
NO COMPONENT
COMPONENTS
USER DIRECTION OF FEED
QTY: 600 PCS. PER REEL
400
(15.748)
DIMENSIONS:
MM
(INCHES)
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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