Features
Applications
nꢀ AvailableꢀinꢀE12ꢀvalues
nꢀ Heightꢀofꢀ4.5ꢀmmꢀmaximum
nꢀ Currentꢀratingꢀtoꢀ9.3ꢀamps
nꢀ RoHSꢀcompliant*
nꢀ Input/outputꢀofꢀDC/DCꢀconverters
nꢀ Powerꢀsuppliesꢀfor:
ꢀ
ꢀ
ꢀ
ꢀ
•ꢀꢀPortableꢀcommunicationꢀequipment
•ꢀꢀCamcorders
•ꢀꢀLCDꢀTVs
100
•ꢀꢀCarꢀradios
ꢀ
SRR1240ꢀSeriesꢀ-ꢀShieldedꢀSMDꢀPowerꢀInductors
Electrical Specifications
Inductance
General Specifications
Test Voltage....................................0.1 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.
100 KHz
Test
Freq.
(MHz)
I rms
Max.
(A)
I sat
Typ.
(A)
SRF
Typ.
RDC
Max.
(mΩ)
Q
**K-
Factor
Bourns Part No.
SRR1240-1R0Y
SRR1240-1R5Y
SRR1240-2R4Y
SRR1240-3R3Y
SRR1240-3R9Y
SRR1240-4R7M
SRR1240-5R6M
SRR1240-6R8M
SRR1240-8R2M
SRR1240-100M
SRR1240-120M
SRR1240-150M
SRR1240-180M
SRR1240-220M
SRR1240-270M
SRR1240-330M
SRR1240-390M
SRR1240-470M
SRR1240-560M
SRR1240-680M
SRR1240-820M
SRR1240-101M
SRR1240-121K
SRR1240-151K
SRR1240-181K
SRR1240-221K
SRR1240-271K
SRR1240-331K
SRR1240-391K
SRR1240-471K
SRR1240-561K
SRR1240-681K
SRR1240-821K
SRR1240-102K
(µH)
1.0
1.5
2.4
3.3
3.9
4.7
5.6
6.8
Tol. % Typ.
(MHz)
± 30
± 30
± 30
± 30
± 30
± 20
± 20
± 20
± 20
± 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
16
10
14
14
16
14
14
10
17
16
16
14
18
16
19
14
19
16
19
16
14
12
12
12
12
10
12
12
12
12
14
10
16
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
85
80
54
43
39
33
35
34
32
27
25
22
20
16
15.5
15
14
13
7.0
9.5
11.5
15.0
15.0
18.0
20.0
23.0
27.0
32.0
38.0
47.0
55.0
67.5
85.0
97.0
120.0
135.0
170.0
200.0
250.0
300.0
370.0
440.0
550.0
660.0
780.0
950.0
9.30
9.20
8.00
6.80
6.35
6.00
5.40
5.20
4.50
4.00
3.80
3.50
3.20
3.00
2.55
2.30
2.15
2.00
1.80
1.50
1.35
1.25
1.20
1.10
0.98
0.92
0.80
0.75
9.20
9.00
7.80
6.50
6.20
5.60
5.10
4.70
4.30
4.00
3.60
3.20
3.00
2.60
2.35
2.10
2.00
1.80
1.65
1.50
1.35
1.20
1.15
1.05
0.95
0.90
0.80
0.75
0.65
0.60
0.52
0.48
0.42
0.40
160
131
111
96
96
85
76
69
63
58
50
47
41
37
34
31
28
26
24
22
20
18
16
14
13
12
11
10
9
Materials
Core............................... Ferrite DR & RI
Wire .............Enameled copper wire 130
Terminal....................................Cu/Ni/Sn
Rated Current
...............Ind. drop of 25 % typ. at Isat
Temperature Rise
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
.....................40 °C max. at rated Irms
Packaging....................800 pcs. per reel
Product Dimensions
2.52
2.52
2.52
2.52
12.5ꢀ±ꢀ0.3
(.492ꢀ±ꢀ.012)
12
11
10
8
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
12.5ꢀ±ꢀ0.3
(.492ꢀ±ꢀ.012)
7.8
7.5
7.0
6.6
6.0
5.5
5.0
4.5
4.0
3.8
3.5
2.8
100
4.0ꢀ±ꢀ0.5
(.157ꢀ±ꢀ.020)
1150.0 0.70
1350.0 0.62
1500.0 0.55
2000.0 0.50
2400.0 0.45
3000.0 0.42
8
7
7
6
1000.0 ± 10
6
5.0ꢀ±ꢀ0.3
(.197ꢀ±ꢀ.012)
**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.
Recommended Layout
Electrical Schematic
7.0
TYP.
5.4
(.213)
(.276)
REF.
ꢀ
MM
(INCHES)
6.8
(.268)
REF.
DIMENSIONS:
ꢀ
2.9
(.114)
REF.
2.9
(.114)
REF.
*RoHSꢀDirectiveꢀ2002/95/ECꢀJan.ꢀ27,ꢀ2003ꢀincludingꢀannexꢀandꢀRoHSꢀRecastꢀ2011/65/EUꢀJuneꢀ8,ꢀ2011.ꢀ
Specificationsꢀareꢀsubjectꢀtoꢀchangeꢀwithoutꢀnotice.
Theꢀdeviceꢀcharacteristicsꢀandꢀparametersꢀinꢀthisꢀdataꢀsheetꢀcanꢀandꢀdoꢀvaryꢀinꢀdifferentꢀapplicationsꢀandꢀactualꢀdeviceꢀperformanceꢀmayꢀvaryꢀoverꢀtime.
Usersꢀshouldꢀverifyꢀactualꢀdeviceꢀperformanceꢀinꢀtheirꢀspecificꢀapplications.