& *R
AE oH
C- S C
Q2 O
00 MP
QU LI
AL ANT
IF
IE
D
Features
■
Shielded construction
■
Inductance range: 4.7 to 1000 µH
■
Heating current up to 8.2 A
Applications
■
Automotive systems:
■
AEC-Q200 qualified
■
RoHS compliant* and halogen free**
- Driver assistant
- Information
- Entertainment
- Lighting
■
DC/DC converters
■
Power supplies
47
0
SRR1280A Series - Shielded Power Inductors
Electrical Specifications @ 25 °C
Bourns
Part Number
Q
Tol.
Test Frequency/
(Ref.)
(%)
Voltage
Inductance
Test
Freq.
(MHz)
SRF
(MHz)
Typ.
DCR
(mΩ)
Max.
I rms
(A)
I sat
(A)
General Specifications
Operating Temperature
................................-40 °C to +125 °C
(Temperature rise included)
Storage Temperature
................................-40 °C to +125 °C
Resistance to Soldering Heat
............................. +245 °C for 10 sec.
Temperature Rise
......................40 °C typ. at rated I rms
Inductance Drop .......... 25 % typ. at I sat
Materials
Core ..............................................Ferrite
Wire ............................Enameled copper
Terminal Finish ...................................Sn
Packaging .................... 400 pcs. per reel
Product Dimensions
12.5
±
0.3
(.492
±
.012)
L
(µH)
SRR1280A-4R7Y 4.7
SRR1280A-6R8Y 6.8
SRR1280A-8R2Y 8.2
SRR1280A-100M
10
SRR1280A-120M
12
SRR1280A-150M
15
SRR1280A-180M
18
SRR1280A-220M
22
SRR1280A-270M
27
SRR1280A-330M
33
SRR1280A-390M
39
SRR1280A-470M
47
SRR1280A-560M
56
SRR1280A-680M
68
SRR1280A-820M
82
SRR1280A-101M 100
SRR1280A-121K 120
SRR1280A-151K 150
SRR1280A-181K 180
SRR1280A-221K 220
SRR1280A-271K 270
SRR1280A-331K 330
SRR1280A-391K 390
SRR1280A-471K 470
SRR1280A-561K 560
SRR1280A-681K 680
SRR1280A-821K 820
SRR1280A-102K 1000
±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
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
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
30
22
20
17
15
13
12
11
10
9.5
8.5
7.5
7
6.5
5
4.5
4.3
4.1
4
3.4
3.1
2.9
2.7
2.2
2
1.7
1.4
1.3
15.5
18.5
20.5
19.5
28.0
28.5
35.0
38.6
52.0
57.0
70.0
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
1300.0
1500.0
1700.0
8.20
7.60
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
0.75
0.70
0.68
8.80
8.00
6.80
6.30
6.00
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
100
12.5
±
0.3
(.492
±
.012)
7.5
±
0.5
(.295
±
.020)
5.0
±
0.3
(.197
±
.012)
How to Order
Electrical Schematic
SRR1280A - 100M
Model
Value Code (see table)
7.0
TYP.
(.276)
Recommended Layout
5.4
(.213)
2.9
(.114)
6.8
(.268)
* RoHS Directive 2002/95/EC Jan. 27, 2003 including annex and RoHS Recast 2011/65/EU June 8, 2011.
** Bourns follows the prevailing definition of “halogen free” in the industry. 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.
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.
2.9
(.114)
DIMENSIONS:
MM
(INCHES)
SRR1280A Series
Line Filter
SRF0504 Series
- Shielded Power Inductors
Soldering Profile
Peak Temperature 245
max.
Max. Peak Temperature -5
30 sec. max.
Max. Time Above 217 : 60~150 sec. max.
Temperature
Rising Area
+4.0 °C/Sec. Max.
Preheat
Area
150~200 °C / 60~120 Sec.
Reflow
Area
+3.0 °C/Sec. Max.
Forced
Cooling Area
-(1.0~5.0) °C/Sec. Max.
250
Peak Temperature: 245 °C
217 °C
Temperature (°C)
200
150
100
50
60~120 Sec.
60~150 Sec.
60 Sec.
Max.
0
50
100
150
200
250
Time (Seconds)
L vs. IDC
SRR1280A-4R7Y
4.50
4.40
4.30
4.20
500.0
450.0
400.0
350.0
SRR1280A-471K
L (uH)
4.10
4.00
3.90
3.80
3.70
3.60
3.50
0.0 1.0
2.0
3.0
4.0 5.0
6.0
7.0
8.0
9.0
L @ 25
℃
L @ 125
℃
L (uH)
300.0
250.0
200.0
150.0
100.0
50.0
0.0
0.0
0.2
L @ 25
℃
0.4
0.6
0.8
L @ 125
℃
1.0
1.2
IDC (A)
IDC (A)
30.0
25.0
20.0
SRR1280A-270M
1,200.0
1,000.0
800.0
600.0
400.0
200.0
L @ 25
℃
0.0 0.5
1.0
1.5 2.0
2.5
3.0
L @ 125
℃
0.0
3.5
4.0 4.5
0.0
0.1
SRR1280A-102K
L (uH)
15.0
10.0
5.0
0.0
L (uH)
L @ 25
℃
0.2
0.3
0.4
0.5
L @ 125
℃
0.6
0.7
0.8
IDC (A)
IDC (A)
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.
SRR1280A Series - Shielded Power Inductors
Temperature vs. IDC
70.0
60.0
50.0
SRR1280A-4R7Y
T @ 25
℃
80.0
70.0
60.0
SRR1280A-471K
T @ 25
℃
T (°C)
40.0
30.0
20.0
10.0
0.0
0.0 1.0
2.0 3.0
4.0
5.0
6.0
7.0
8.0 9.0
T (°C)
50.0
40.0
30.0
20.0
10.0
0.0
0.0
0.2
0.4
0.6
0.8
1.0
1.2
IDC (A)
70.0
60.0
50.0
IDC (A)
SRR1280A-270M
T @ 25
℃
70.0
60.0
50.0
SRR1280A-102K
T @ 25
℃
T (°C)
40.0
30.0
20.0
10.0
0.0
0.0
0.5 1.0
1.5
2.0
2.5 3.0
3.5
4.0
4.5
T (°C)
40.0
30.0
20.0
10.0
0.0
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
IDC (A)
IDC (A)
Packaging Specifications
330
DIA.
(12.99)
2.0
±
0.5
(.079
±
.020)
30.4
(1.197)
13.0
(.512)
DIA.
50.0 -0
(1.97 -0)
13.0
DIA.
(.512)
26 +0
(1.024 +0)
4.0
(.157)
21.0
±
0.8
(.827
±
.031)
24.0
(.945)
START
END
24
(.945)
100
100
100
20.0
(.787)
DIMENSIONS:
MM
(INCHES)
USER DIRECTION OF FEED
QTY: 400 PCS. PER REEL
NO COMPONENT
COMPONENTS
NO COMPONENT
200
(7.87)
400
(15.75)
REV. 09/13
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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