oH
V S C
AV ER OM
AI SIO P
LA N
BL S
E
PL
IA
NT
Features
n
Available in E12 values
n
Inductance range as low as 1.1 µH
n
Current rating to 10.2 amps
Applications
n
Input/output of DC/DC converters
n
Power supplies for:
- Portable communication equipment
*R
oH
S
CO
M
n
RoHS compliant*
LE
AD
- Camcorders
- LCD televisions
- Car radios
F
RE
E
47
0
Electrical Specifications
& *R
AE oH
C- S C
Q2 O
00 MP
Q LI
UA AN
LI T
FI
ED
Ro VE LEA
HS RS D
C ION FRE
OM S E
PL AR
IA E
NT
*
SRR1280 Series - Shielded SMD Power Inductors
General Specifications
Inductance Test Frequency / Voltage
Bourns
Part Number
Inductance
(µH)
Tol. (%)
Q
(Typ.)
SRR1280-1R1Y
SRR1280-1R2Y
SRR1280-1R4Y
SRR1280-2R4Y
SRR1280-3R3Y
SRR1280-3R5Y
SRR1280-4R5Y
SRR1280-4R7Y
SRR1280-5R6Y
SRR1280-6R1Y
SRR1280-6R8Y
SRR1280-7R5Y
SRR1280-7R6Y
SRR1280-8R2Y
SRR1280-100M
SRR1280-120M
SRR1280-150M
SRR1280-180M
SRR1280-220M
SRR1280-270M
SRR1280-330M
SRR1280-390M
SRR1280-470M
SRR1280-560M
SRR1280-680M
SRR1280-820M
SRR1280-101M
SRR1280-121K
SRR1280-151K
SRR1280-181K
SRR1280-221K
SRR1280-271K
SRR1280-331K
SRR1280-391K
SRR1280-471K
SRR1280-561K
SRR1280-681K
SRR1280-821K
SRR1280-102K
**K-Factor: To calculate core flux density, Bp-p (gauss) = K x L(µH) x
Δ
I (peak-to-peak ripple current,
A), determine core loss from
Core Loss vs. Flux Density
plot.
1.2
1.4
2.4
3.3
3.5
4.5
4.7
5.6
6.1
6.8
7.5
7.6
8.2
10.0
12.0
15.0
18.0
22.0
27.0
33.0
39.0
47.0
56.0
68.0
82.0
100.0
120.0
150.0
180.0
220.0
270.0
330.0
390.0
470.0
560.0
680.0
820.0
1000.0
1.1
± 30
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
30
30
30
30
30
30
30
30
30
30
30
30
30
20
20
20
20
20
20
20
20
20
20
20
20
20
10
10
10
10
10
10
10
10
10
10
10
10
26
28
24
20
20
20
20
22
20
20
20
16
15
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
Test
Freq.
(MHz)
7.96
7.96
7.96
7.96
7.96
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
2.52
2.52
2.52
2.52
0.796
0.796
0.796
0.796
0.796
0.796
0.796
0.796
0.796
0.796
0.796
0.796
0.796
0.252
7.96
SRF
Typ.
(MHz)
83
18.0
6.60
7.80
90
80
9.8
9.80 12.00
90
45
10.0
9.20 10.50
62
40
12.0
8.80
9.80
54
36
12.0
8.80
9.80
56
34
13.5
8.50
9.00
48
30
15.5
8.20
8.80
48
24
16.0
8.00
8.50
44
23
18.0
6.60
7.80
43
22
18.5
7.60
8.00
39
21
17.5
6.40
7.00
37
12.5 ± 0.3
21
20.0
5.90
6.50
35
(.492 ± .012)
20
20.5
6.20
6.80
35
17
19.5
6.00
6.30
32
15
28.0
5.60
6.60
30
13
28.5
5.20
5.00
28
12.5 ± 0.3
(.492 ± .012)
12
35.0
4.80
4.60
23
11
38.6
4.30
4.10
21
10
52.0
3.90
3.70
20
9.5
57.0
3.50
3.30
17
8.5
70.0
3.20
7.5 ± 0.5
3.10
16
(.295 ± .020)
7.5
80.0
2.90
2.80
15
7.0
100.0
2.60
2.50
13
6.5
120.0
2.40
2.30
12
5.0
130.0
2.30
2.20
11
5.0 ± 0.3
(.197 ± .012)
4.5
150.0
2.10
2.00
10
4.3
200.0
1.95
1.95
9
4.1
270.0
1.85
1.90
8
4.0
300.0
1.75
1.88
7
7.0
3.4
400.0
1.60
1.70
TYP.
7
(.276)
3.1
450.0
1.20
1.60
6
2.9
600.0
1.10
1.40
5
2.7
680.0
1.00
1.40
5
2.2
880.0
0.90
1.25
5
2.0
960.0
0.80
1.15
4
1.7
1300.0 0.75
0.97
4
1.4
1500.0 0.70
0.94
4
1.3
1700.0 0.68
0.80
3
AE
C *
AP Ro
PR HS
OV C
ED OM
(S PL
el IAN
ec T
t M
od
el
s)
85
RDC
Max.
(mW)
6.5
10.20
I rms
Max.
(A)
14.00
I sat
Typ.
(A)
**K-
Factor
94
Operating Temperature
................................-40 °C to +125 °C
(Temperature rise included)
Storage Temperature
................................-40 °C to +125 °C
Resistance to Soldering Heat
............................. +260 °C for 10 sec.
Temperature Rise
....................40 °C max. at rated I rms
Inductance Drop .......... 25 % typ. at I sat
Moisture Sensitivity Level .....................1
ESD Classification (HBM).................N/A
Materials
Core ............................Ferrite DR and RI
Wire ............. Enameled copper wire 130
Terminal ....................................Cu/Ni/Sn
Packaging .................... 400 pcs. per reel
Product Dimensions
12.5 ± 0.3
(.492 ± .012)
SRR1280-1R1Y to -8R2Y ... 100 kHz/1 V
SRR1280-100M to -102K........ 1 kHz/1 V
100
100
12.5 ± 0.3
(.492 ± .012)
7.5 ± 0.5
(.295 ± .020)
5.0 ± 0.3
(.197 ± .012)
7.0
TYP.
(.276)
Electrical Schematic
Recommended Layout
REF.
5.4
(.213)
MM
DIMENSIONS:
(INCHES)
2.9
(.114)
REF.
6.8
(.268)
REF.
2.9
(.114)
REF.
* RoHS Directive 2002/95/EC Jan. 27, 2003 including
annex and RoHS Recast 2011/65/EU June 8, 2011.
Specifications are subject to change without notice.
The device characteristics and parameters in this data
sheet can and do vary in different applications and
actual device performance may vary over time.
Users should verify actual device performance in their
5.4
REF.
specific applications.
(.213)
SRR1280 Series - Shielded SMD Power Inductors
SRF0504 Series - Line Filter
Core Loss vs. Flux Density
10000
1000
100
Core Loss (mW)
10
1
0.1
0.01
0.001
10
800 KHz
500 KHz
300 KHz
200 KHz
100 KHz
50 KHz
10 KHz
100
1000
Flux Density Bp-p (gauss)
Packaging Specifications
330
DIA.
(12.99)
2.0 ± 0.5
(.079 ± .020)
30.4
(1.197)
13.0
(.512)
DIA.
50.0
(1.969)
13.0
DIA.
(.512)
26
(1.024)
4.0
(.157)
21.0 ± 0.8
(.827 ± .031)
24.0
(.945)
END
START
24
(.945)
100
100
100
20.0
(.787)
NO COMPONENT
200
(7.87)
COMPONENTS
NO COMPONENT
400
(15.75)
USER DIRECTION OF FEED
QTY: 400 PCS. PER REEL
REV. 08/17
Specifications are subject to change without notice.
The device characteristics and parameters in this data sheet can and do vary in different applications and actual device performance may vary over time.
Users should verify actual device performance in their specific applications.
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