PL
IA
N
T
Features
n
Available in E12 values
n
Height of 4.5 mm maximum
n
Current rating to 9.3 amps
Applications
n
Input/output of DC/DC converters
n
Power supplies for:
*R
oH
S
C
OM
LE
AD
F
RE
E
10
0
n
RoHS compliant*
• Portable communication equipment
• Camcorders
• LCD TVs
SRR1240 Series - Shielded SMD Power Inductors
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.
Moisture Sensitivity Level .....................1
ESD Classification (HBM)................. N/A
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
.....................40 °C max. at rated Irms
Packaging .................... 800 pcs. per reel
Product Dimensions
12.5 ± 0.3
(.492 ± .012)
Electrical Specifications
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
Bourns Part No.
1.0
1.5
2.4
3.3
3.9
4.7
5.6
6.8
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
(µH)
Tol. %
± 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
Q
Typ.
Ro VE LEA
HS RS D
C ION FRE
OM S E
PL AR
IA E
NT
*
Inductance
100 KHz
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
Test
Freq.
(MHz)
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
0.252
SRF
Typ.
(MHz)
85
7.0
9.30
9.20
160
80
9.5
9.20
9.00
131
54
11.5
8.00
7.80
111
43
15.0
6.80
6.50
96
39
15.0
6.35
6.20
96
33
18.0
6.00
5.60
85
35
20.0
5.40
5.10
76
34
23.0
5.20
4.70
69
12.5 ± 0.3
32
27.0
(.492 ± .012)
4.50
4.30
63
27
32.0
4.00
4.00
58
25
38.0
3.80
3.60
50
22
47.0
3.50
3.20
47
20
55.0
3.20
3.00
12.5 ± 0.3
41
(.492 ± .012)
16
67.5
3.00
2.60
37
15.5
85.0
2.55
2.35
34
15
97.0
2.30
2.10
31
14
120.0
2.15
2.00
28
13
135.0
2.00
1.80
26
4.0 ± 0.5
12
170.0
1.80
1.65
24
(.157 ± .020)
11
200.0
1.50
1.50
22
10
250.0
1.35
1.35
20
8
300.0
1.25
1.20
18
7.8
370.0
1.20
1.15
16
7.5
440.0
1.10
1.05
14
7.0
5.0 ± 0.3
550.0
0.98
0.95
13
6.6
660.0
0.92
0.90
12
(.197 ± .012)
6.0
780.0
0.80
0.80
11
5.5
950.0
0.75
0.75
10
5.0
1150.0 0.70
0.65
9
7.0
4.5
1350.0 0.62
0.60
TYP.
8
(.276)
4.0
1500.0 0.55
0.52
7
3.8
2000.0 0.50
0.48
7
3.5
2400.0 0.45
0.42
6
2.8
3000.0 0.42
0.40
6
RDC
Max.
(mΩ)
I rms
Max.
(A)
I sat
Typ.
(A)
**K-
Factor
100
100
12.5 ± 0.3
(.492 ± .012)
4.0 ± 0.5
(.157 ± .020)
**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.
5.0 ± 0.3
(.197 ± .012)
Electrical Schematic
Recommended Layout
REF.
5.4
(.213)
7.0
TYP.
(.276)
2.9
(.114)
REF.
6.8
(.268)
REF.
2.9
(.114)
REF.
MM
DIMENSIONS:
(INCHES)
*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 specific applications.
REF.
5.4
(.213)
SRR1240 Series - Shielded SMD Power Inductors
Core Loss vs. Flux Density
10000
1000
Core Loss (mW)
100
10
1
0.10
0.01
800 KHz
500 KHz
300 KHz
200 KHz
100 KHz
50 KHz
10 KHz
10
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 ± 0.5
(.512 ± .020)
DIA.
50.0
(1.969)
21.0 ± 0.8
(.827 ± .031)
13.0 ± 0.5
DIA.
(.512 ± .020)
26
(1.024)
END
4
(.157)
START
24
(.945)
100
100
100
16.0
(.63)
MM
DIMENSIONS:
(INCHES)
5.3
(.209)
NO COMPONENT
160
(6.299)
COMPONENTS
NO COMPONENT
390
(15.354)
USER DIRECTION OF FEED
QTY: 800 PCS. PER REEL
REV. 03/18
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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