Features
■ Shielded construction
■ Inductance range: 4.7 to 1000 µH
■ Heating current up to 8.2 A
■ AEC-Q200 compliant
470
■ RoHS compliant* and halogen free**
SRR1280A Series - Shielded Power Inductors
Electrical Specifications @ 25 °C
General Specifications
Operating Temp..........-40 °C to +125 °C
(Temperature rise included)
Storage Temp. ............-40 °C to +125 °C
Temperature Rise
......................40 °C typ. at rated I rms
Inductance Drop.......... 25 % typ. at I sat
Moisture Sensitivity Level.....................1
ESD Classification (HBM).................N/A
Inductance
Bourns
Test
Freq.
(MHz)
SRF
(MHz)
Typ.
DCR
(mΩ)
Max.
Q
(Ref.)
I rms
(A)
I sat
(A)
L
Tol.
Test Frequency/
Voltage
Part Number
(μH) (%)
SRR1280A-4R7Y 4.7 ±30
SRR1280A-6R8Y 6.8 ±30
SRR1280A-8R2Y 8.2 ±30
100 KHz/1 V
100 KHz/1 V
100 KHz/1 V
1 KHz/1 V
1 KHz/1 V
1 KHz/1 V
1 KHz/1 V
1 KHz/1 V
1 KHz/1 V
1 KHz/1 V
1 KHz/1 V
1 KHz/1 V
1 KHz/1 V
1 KHz/1 V
1 KHz/1 V
1 KHz/1 V
1 KHz/1 V
1 KHz/1 V
1 KHz/1 V
1 KHz/1 V
1 KHz/1 V
1 KHz/1 V
1 KHz/1 V
1 KHz/1 V
1 KHz/1 V
1 KHz/1 V
1 KHz/1 V
1 KHz/1 V
22
20
22
24
26
26
24
20
26
28
24
24
24
20
20
18
16
24
24
24
20
18
20
20
20
26
20
40
7.96
7.96
30
22
20
17
15
13
12
11
15.5
18.5
20.5
19.5
28.0
28.5
35.0
38.6
52.0
57.0
70.0
80.0
8.20 8.80
7.60 8.00
6.20 6.80
6.00 6.30
5.60 6.00
5.20 5.00
4.80 4.60
4.30 4.10
3.90 3.70
3.50 3.30
3.20 3.10
2.90 2.80
7.96
SRR1280A-100M
SRR1280A-120M
SRR1280A-150M
SRR1280A-180M
SRR1280A-220M
SRR1280A-270M
SRR1280A-330M
SRR1280A-390M
SRR1280A-470M
SRR1280A-560M
SRR1280A-680M
SRR1280A-820M
10 ±20
12 ±20
15 ±20
18 ±20
22 ±20
27 ±20
33 ±20
39 ±20
47 ±20
56 ±20
68 ±20
82 ±20
2.52
2.52
Materials
2.52
2.52
Core..............................................Ferrite
Wire ............................Enameled copper
Terminal Finish ...................................Sn
Packaging.................... 400 pcs. per reel
2.52
2.52
10
9.5
8.5
7.5
7
2.52
2.52
Product Dimensions
2.52
2.52
100.0 2.60 2.50
120.0 2.40 2.30
130.0 2.30 2.20
150.0 2.10 2.00
200.0 1.95 1.95
270.0 1.85 1.90
300.0 1.75 1.88
400.0 1.60 1.70
450.0 1.20 1.60
600.0 1.10 1.40
680.0 1.00 1.40
880.0 0.90 1.25
960.0 0.80 1.15
1300.0 0.75 0.97
1500.0 0.70 0.94
1700.0 0.68 0.80
12.5 ± 0.3
(.492 ± .012)
2.52
6.5
5
2.52
SRR1280A-101M 100 ±20
SRR1280A-121K 120 ±10
SRR1280A-151K 150 ±10
SRR1280A-181K 180 ±10
SRR1280A-221K 220 ±10
SRR1280A-271K 270 ±10
SRR1280A-331K 330 ±10
SRR1280A-391K 390 ±10
SRR1280A-471K 470 ±10
SRR1280A-561K 560 ±10
SRR1280A-681K 680 ±10
SRR1280A-821K 820 ±10
SRR1280A-102K 1000 ±10
0.796
0.796
0.796
0.796
0.796
0.796
0.796
0.796
0.796
0.796
0.796
0.796
0.252
4.5
4.3
4.1
4
12.5 ± 0.3
(.492 ± .012)
100
3.4
3.1
2.9
2.7
2.2
2
7.5 ± 0.5
(.295 ± .020)
1.7
1.4
1.3
5.0 ± 0.3
2.5 0.15
(.197 ± .012)
(.098 .006)
How to Order
Electrical Schematic
7.0
12.0 ± 0.3
(.472 ± .012)
TYP.
(.276)
SRR1280A - 100M
Model
Value Code (see table)
Recommended Layout
5.4
(.213)
2.9
(.114)
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
6.8
(.268)
WARNING Cancer and Reproductive Harm www.P65Warnings.ca.gov
RoHS Directive 2015/863, Mar 31, 2015 and Annex.
2.9
(.114)
*
** 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.
MM
(INCHES)
DIMENSIONS:
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