Features
Applications
nꢀ AvailableꢀinꢀE12ꢀvalues
nꢀ Inductanceꢀrangeꢀasꢀlowꢀasꢀ1.1ꢀµH
nꢀ Currentꢀratingꢀtoꢀ10.2ꢀamps
nꢀ RoHSꢀcompliant*
nꢀ Input/outputꢀofꢀDC/DCꢀconverters
nꢀ Powerꢀsuppliesꢀfor:ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
-ꢀꢀPortableꢀcommunicationꢀequipmentꢀ
-ꢀꢀCamcordersꢀ
470
-ꢀꢀLCDꢀtelevisionsꢀ
-ꢀꢀCarꢀradios
ꢀ
ꢀꢀSRR1280ꢀSeriesꢀ-ꢀShieldedꢀSMDꢀPowerꢀInductors
Electrical Specifications
General Specifications
Inductance Test Frequency / Voltage
SRR1280-1R1Y to -8R2Y... 100 kHz/1 V
SRR1280-100M to -102K........ 1 kHz/1 V
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
Test
Freq.
(MHz)
SRF
Typ.
(MHz)
I rms
Max.
(A)
RDC
Max.
(mW)
I sat
Typ.
(A)
Inductance
Bourns
Q
(Typ.)
**K-
Factor
Part Number
(µH)
Tol. (%)
SRR1280-1R1Y
1.1
±
30
26
7.96
85
6.5
10.20 14.00
94
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
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
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
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
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
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
83
80
45
40
36
34
30
24
23
22
21
21
20
17
15
13
12
18.0
9.8
10.0
12.0
12.0
13.5
15.5
16.0
18.0
18.5
17.5
20.0
20.5
19.5
28.0
28.5
35.0
6.60 7.80
9.80 12.00
9.20 10.50
90
90
62
54
56
48
48
44
43
39
37
35
35
32
30
28
23
21
20
17
16
15
13
12
11
10
9
8.80
8.80
8.50
8.20
8.00
6.60
7.60
6.40
5.90
6.20
6.00
5.60
5.20
4.80
4.30
3.90
3.50
3.20
2.90
2.60
2.40
2.30
2.10
1.95
1.85
1.75
1.60
1.20
1.10
1.00
0.90
0.80
9.80
9.80
9.00
8.80
8.50
7.80
8.00
7.00
6.50
6.80
6.30
6.60
5.00
4.60
4.10
3.70
3.30
3.10
2.80
2.50
2.30
2.20
2.00
1.95
1.90
1.88
1.70
1.60
1.40
1.40
1.25
1.15
0.97
0.94
0.80
Materials
Core............................Ferrite DR and RI
Wire .............Enameled copper wire 130
Terminal....................................Cu/Ni/Sn
Packaging....................400 pcs. per reel
11
10
38.6
52.0
57.0
70.0
Product Dimensions
9.5
8.5
7.5
7.0
6.5
5.0
4.5
4.3
4.1
4.0
3.4
3.1
2.9
2.7
2.2
2.0
1.7
1.4
1.3
12.5ꢀ±ꢀ0.3
(.492ꢀ±ꢀ.012)
80.0
100.0
120.0
130.0
150.0
200.0
270.0
300.0
400.0
450.0
600.0
680.0
880.0
960.0
12.5ꢀ±ꢀ0.3
(.492ꢀ±ꢀ.012)
100
SRR1280-101M 100.0
SRR1280-121K
SRR1280-151K
SRR1280-181K
SRR1280-221K
SRR1280-271K
SRR1280-331K
SRR1280-391K
SRR1280-471K
SRR1280-561K
SRR1280-681K
SRR1280-821K
120.0
150.0
180.0
220.0
270.0
330.0
390.0
470.0
560.0
680.0
820.0
8
7
7
6
5
5
5
4
7.5ꢀ±ꢀ0.5
(.295ꢀ±ꢀ.020)
5.0ꢀ±ꢀ0.3
(.197ꢀ±ꢀ.012)
1300.0 0.75
1500.0 0.70
1700.0 0.68
4
4
3
SRR1280-102K 1000.0
7.0
TYP.
(.276)
**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.
Electrical Schematic
Recommended Layout
ꢀ
MM
(INCHES)
5.4
(.213)
DIMENSIONS:
REF.
ꢀ
*ꢀ RoHSꢀDirectiveꢀ2002/95/ECꢀJan.ꢀ27,ꢀ2003ꢀincludingꢀ
annexꢀandꢀRoHSꢀRecastꢀ2011/65/EUꢀJuneꢀ8,ꢀ2011.ꢀ
Specificationsꢀareꢀsubjectꢀtoꢀchangeꢀwithoutꢀnotice.
Theꢀdeviceꢀcharacteristicsꢀandꢀparametersꢀinꢀthisꢀdataꢀ
sheetꢀcanꢀandꢀdoꢀvaryꢀinꢀdifferentꢀapplicationsꢀandꢀ
actualꢀdeviceꢀperformanceꢀmayꢀvaryꢀoverꢀtime.
Usersꢀshouldꢀverifyꢀactualꢀdeviceꢀperformanceꢀinꢀtheirꢀ
specificꢀapplications.
6.8
(.268)
REF.
2.9
(.114)
REF.
2.9
(.114)
REF.