* 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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