Features
■ Shielded construction
■ Inductance range: 1.2 to 390 µH
■ Heating current up to 4.8 A
■ AEC-Q200 compliant
■ RoHS compliant* and halogen free**
SRR4528A Series – Shielded Power Inductors
Operating Temperature
................................-40 °C to +125 °C
(Temperature rise included)
Storage Temperature
................................-40 °C to +125 °C
Temperature Rise ................... 40 °C typ.
at rated Irms
Inductance Drop ........... 35 % typ. at Isat
MSL ......................................................1
................. N/A
Core ..............................................Ferrite
Wire ............................Enameled copper
Terminal Finish ...................................Sn
Packaging ......... 500 pcs. per 7-inch reel
SRP4528A - 1R2Y
Model
Value Code (see table)
EMEA:
The Americas:
www.bourns.com
*RoHS COMPLIANT,
**HALOGEN FREE &
AEC-Q200 COMPLIANT
Bourns
Part Number
Inductance
@ 100 kHz / 0.1 V SRF
(MHz)
Typ.
DCR
(mΩ)I rms (A)
Typ.
I sat (A)
Typ.L (μH) Tol. % Typ. Max.
SRR4528A-1R2Y 1.2 ± 30 % 82.0 12.3 17.0 4.82 3.04
SRR4528A-1R8Y 1.8 ± 30 % 78.0 14.3 20.0 4.20 2.50
SRR4528A-2R2Y 2.2 ± 30 % 76.0 17.4 23.0 3.78 2.32
SRR4528A-2R7Y 2.7 ± 30 % 68.0 19.1 29.0 3.40 2.10
SRR4528A-3R3Y 3.3 ± 30 % 60.0 25.6 35.0 2.93 1.82
SRR4528A-3R9Y 3.9 ± 30 % 58.0 28.2 37.0 2.80 1.70
SRR4528A-4R7Y 4.7 ± 30 % 54.0 29.8 40.0 2.63 1.58
SRR4528A-5R6Y 5.6 ± 30 % 50.0 34.9 47.0 2.39 1.49
SRR4528A-6R8Y 6.8 ± 30 % 45.0 43.2 58.0 2.25 1.37
SRR4528A-7R4Y 7.4 ± 30 % 42.0 46.7 63.0 2.16 1.28
SRR4528A-8R2Y 8.2 ± 30 % 38.0 51.5 70.0 2.12 1.22
SRR4528A-100M 10.0 ± 20 % 35.0 64.9 88.0 1.76 1.13
SRR4528A-120M 12.0 ± 20 % 28.0 74.2 100.0 1.62 0.99
SRR4528A-150M 15.0 ± 20 % 24.0 87.9 119.0 1.42 0.90
SRR4528A-180M 18.0 ± 20 % 23.0 104.0 136.0 1.28 0.85
SRR4528A-220M 22.0 ± 20 % 21.0 138.0 179.0 1.10 0.72
SRR4528A-270M 27.0 ± 20 % 20.0 152.0 197.0 1.06 0.68
SRR4528A-330M 33.0 ± 20 % 18.0 184.0 239.0 0.95 0.59
SRR4528A-390M 39.0 ± 20 % 16.0 218.0 272.0 0.90 0.57
SRR4528A-470M 47.0 ± 20 % 15.0 240.0 300.0 0.86 0.52
SRR4528A-560M 56.0 ± 20 % 14.0 278.0 348.0 0.81 0.45
SRR4528A-680M 68.0 ± 20 % 12.0 361.0 452.0 0.70 0.41
SRR4528A-820M 82.0 ± 20 % 11.0 442.0 552.0 0.59 0.39
SRR4528A-101M 100.0 ± 20 % 10.0 487.0 609.0 0.56 0.34
SRR4528A-121M 120.0 ± 20 % 9.0 547.0 700.0 0.53 0.30
SRR4528A-151M 150.0 ± 20 % 8.5 724.0 905.0 0.48 0.29
SRR4528A-181M 180.0 ± 20 % 7.0 903.0 1128.0 0.43 0.26
SRR4528A-221M 220.0 ± 20 % 6.0 1184.0 1480.0 0.37 0.23
SRR4528A-271M 270.0 ± 20 % 5.0 1290.0 1612.0 0.34 0.19
SRR4528A-331M 330.0 ± 20 % 4.5 1730.0 2160.0 0.32 0.18
SRR4528A-391M 390.0 ± 20 % 4.0 1910.0 2380.0 0.28 0.17
Materials
How to Order
Schematic
* 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.
WARNING Cancer and Reproductive Harm - www.P65Warnings.ca.gov
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 his document, and at www.bourns.com/docs/legal/disclaimer.pdf
SRR4528A Series – Shielded Power Inductors
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.
200
Max. Peak Temperature -5 30 sec. max.
Max. Time Above 217 : 60~150 sec. max.
Peak Temperature 260 max.
250
150
200
100
50
0
Temperature (°C)
10050 150
Time (Seconds)
+4.0 °C/Sec. Max. 150~200 °C / 60~120 Sec. +3.0 °C/Sec. Max. -(1.0~5.0) °C/Sec. Max.
Temperature
Rising Area
Preheat
Area
Reflow
Area
Forced
Cooling Area
250
Peak Temperature: 260 °C
217 °C
60~120 Sec.
60 Sec.
Max.
60~150 Sec.
100
5.00
(.197) MAX.
5.00
(.197) MAX.
2.80
(.110) MAX.
2.10
(.083) TYP.
6.20
(.244) TYP.
Product Dimensions
DIMENSIONS: MM
(INCHES)
DIMENSIONS: MM
(INCHES)
5.20
(.205)
4.20
(.165)
2.00
(.079)
1.60
(.063)
Recommended Layout
SRR4528A Series – Shielded Power Inductors
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.
Inductance vs. Current and Temperature Rise vs. Current
0.0
0 0.2 0.4 0.80.6 1.0 1.2
0
0 0.38 0.76 1.14 1.52 1.90
1.00 2.00 3.00 4.00 5.001.00.5 1.5 2.52.0 3.0
SRR4528A-4R7Y
SRR4528A-220M
SRR4528A-470M
SRR4528A-391M
SRR4528A-4R7Y
SRR4528A-220M
SRR4528A-470M
SRR4528A-391M
IDC (A)
IDC (A)
0 0.2 0.4 0.6 0.8
IDC (A)
0 0.100.05 0.15 0.250.20 0.30
IDC (A) IDC (A)
IDC (A)
IDC (A)
0
0 0.11 0.22 0.33 0.44
0.26 0.52 0.78 1.04 1.30
IDC (A)
L @ 25 °C
T @ 25 °C
T @ 25 °C
T @ 25 °C
T @ 25 °C
L @ 125 °C
L @ 125 °C
L @ 125 °C
L @ 125 °C
L/LOAL/LOAL/LOA
T (°C) T (°C)
120 %
90 %
60 %
30 %
0 %
L/LOA
100.0
80.0
60.0
40.0
20.0
0
70.0
60.0
50.0
40.0
30.0
20.0
10.0
0
T (°C)
80.0
60.0
40.0
20.0
0
T (°C)
80.0
60.0
40.0
20.0
0
L @ 25 °C
L @ 25 °C
L @ 25 °C
120 %
90 %
60 %
30 %
0 %
120 %
90 %
60 %
30 %
0 %
120 %
90 %
60 %
30 %
0 %
SRR4528A Series – Shielded Power Inductors
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.
REV. 06/18/18
DIMENSIONS: MM
(INCHES)
100 100 100
16.5
(.650)
14 +0
(.551 +0)
13
(.512)
DIA.
178
(7.008)
50 -0
(1.969 -0)
USER DIRECTION OF FEED
QTY: 500 PCS PER REEL
4.0
(.157)
12
(.472)
200
(7.874)
NO COMPONENT COMPONENTS NO COMPONENT
400
(15.748)
8.0
(.315)
178
(7.008) 2.0 ± 0.5
(.079 ± .020)
21.0 ± 0.8
(.827 ± .031) DIA.
DIA.
12
(.472)
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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and complete before placing orders for Bourns® products.
The characteristics and parameters of a Bourns® product set forth in its data sheet are based on laboratory conditions, and
statements regarding the suitability of products for certain types of applications are based on Bourns’ knowledge of typical
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