SRF1280A Inductors Datasheet

SRF1280A Datasheet, PDF, Equivalent


Part Number

SRF1280A

Description

Dual-Winding Shielded Power Inductors

Manufacture

BOURNS

Total Page 4 Pages
Datasheet
Download SRF1280A Datasheet


SRF1280A
Features
Applications
Multiple applications: parallel, series,
DC/DC converters
dual-inductor and transformer
Power supplies
10 1 Magnetically shielded, low radiation
Inductance range: 0.47 to 1000 μH
SEPIC - DC/DC converters
Rated current up to 17.9 A
AEC-Q200 compliant
RoHS compliant* and halogen free**
SRF1280A Series - Dual-Winding Shielded Power Inductors
Electrical Specifications @ 25 °C
Parallel Rating
Series Rating
Bourns
Part No.
Inductance
@ 100 KHz Tol.
L (μH) (%)
DCR
(Ω)
Max.
Inductance
Irms Isat @ 100 KHz Tol.
(A) (A) L (μH) (%)
DCR
(Ω)
Max.
Irms Isat
(A) (A)
SRF1280A-R47Y
SRF1280A-1R0Y
SRF1280A-1R5Y
SRF1280A-2R2Y
SRF1280A-3R3Y
SRF1280A-4R7Y
SRF1280A-6R8Y
SRF1280A-8R2Y
SRF1280A-100M
SRF1280A-150M
SRF1280A-220M
SRF1280A-330M
SRF1280A-470M
SRF1280A-680M
SRF1280A-820M
SRF1280A-101M
SRF1280A-151M
SRF1280A-221M
SRF1280A-331M
SRF1280A-471M
SRF1280A-681M
SRF1280A-821M
SRF1280A-102M
0.47
1.0
1.5
2.2
3.3
4.7
6.8
8.2
10
15
22
33
47
68
82
100
150
220
330
470
680
820
1000
± 30 0.0055 17.9 56
1.676 ± 30 0.0216 8.94 28
± 30 0.0067 15.5 40
3.284 ± 30 0.026 7.74 20
± 30 0.0076 13.5 31.1 5.428 ± 30 0.0306 6.77 15.6
± 30 0.0092 12.5 25.5 8.108 ± 30 0.0338 6.23 12.7
± 30 0.011 10.4 21.5 11.320 ± 30 0.04 5.23 10.8
± 30 0.0135 8.25 16.5 19.360 ± 30 0.05 4.13 8.24
± 30 0.0183 7.34 13.3 29.550 ± 30 0.0656 3.67 6.67
± 30 0.0191 6.32 12.2 35.440 ± 30 0.0714 3.16 6.09
± 20 0.0241 6.04 11.2 41.880 ± 20 0.0921 3.02 5.6
± 20 0.0333 5.03 9.66 56.360 ± 20 0.129 2.51 4.83
± 20 0.0503 4 7.57 91.720 ± 20 0.192 2 3.78
± 20 0.0664 3.23 6.22 135.700 ± 20 0.265 1.61 3.11
± 20 0.0898 2.95 5.28 188.200 ± 20 0.353 1.47 2.64
± 20 0.123 2.44 4.44 265.900 ± 20 0.469 1.22 2.22
± 20 0.153 2.09 4.06 319.000 ± 20 0.578 1.04 2.03
± 20 0.175 1.96 3.64 397.200 ± 20 0.701 0.98 1.82
± 20 0.261 1.59 3.01 579.600 ± 20 1.013 0.796 1.51
± 20 0.343 1.29 2.43 886.000 ± 20 1.38 0.645 1.22
± 20 0.54 1.04 2.01 1294.000 ± 20 2.172 0.522 1.01
± 20 0.865 0.85 1.68 1868.000 ± 20 3.3 0.427 0.838
± 20 1.296 0.76 1.39 2707.000 ± 20 4.888 0.38 0.697
± 20 1.632 0.65 1.27 3272.000 ± 20 5.896 0.325 0.633
± 20 1.992 0.61 1.14 4020.000 ± 20 7.202 0.307 0.571
Electrical Schematic
12
1
21
2
N1 N2 N1 N2
N1 N2
34
Recommended Layout
2.15
(.085)
4.50
(.177)
12
13.00
(.512)
43
1.28
(.050)
DUAL INDUCTOR MODE
3 43
4
PARALLEL
SERIES
2.15
(.085)
1
4.50
(.177)
2
13.00
(.512)
43
1.28
(.050)
SERIES MODE
DIMENSIONS:
MM
(INCHES)
Specifications are subject to change without notice. Users should verify actual device performance in their specific
applications. The products described herein and this document are subject to specific legal disclaimers as set forth on the
last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf.
General Specifications
Test Voltage ..................................0.25 V
Operating Temperature
................................-40 °C to +125 °C
(Temperature rise included)
Storage Temperature
................................-40 °C to +125 °C
Temperature Rise
.......................40 °C typ. at rated Irms
Inductance drop...................30 % at Isat
Hi-pot (N1-N2) ................500 Vac/60 Hz,
3 mA, 1 sec
Moisture Sensitivity Level ..................... 1
ESD Classification (HBM)................. N/A
Materials
Core..............................................Ferrite
Wire ............................Enameled copper
Terminal Finish ...................................Sn
Packaging.................... 400 pcs. per reel
Product Dimensions
DOT
INDICATES
TERMINAL 1
12.50
(.492)
MAX.
12.50
(.492)
MAX.
5.00 ± 0.3
(.197 ± .012)
8.00
(.315)
MAX.
5.00 ± 0.3
(.197 ± .012)
43
1 2 1.80 ± 0.2
(.071 ± .008)
DIMENSIONS:
MM
(INCHES)
WARNING
Cancer and Reproductive Harm
www.P65Warnings.ca.gov
* RoHS Directive 2015/863, Mar 31, 2015 and Annex.
** 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.

SRF1280A
SRF1280A Series - Dual-Winding Shielded Power Inductors
Inductance vs. IDC
SRF1280A-470M
L @ 25 °C
50.0
L @ 125 °C
40.0
30.0
20.0
10.0
0.0
0.0
1.1 2.2
IDC (A)
3.3
4.4
800.0
600.0
400.0
200.0
0.0
0.0
SRF1280A-681M
L @ 25 °C
L @ 125 °C
0.3 0.6
IDC (A)
0.9 1.2
Temperature Rise vs. IDC
100.0
SRF1280A-470M
ΔT @ 25 °C
80.0
60.0
40.0
20.0
0.0
0.0
1.13 2.25
IDC (A)
3.38
100.0
80.0
60.0
40.0
20.0
0.0
4.50 0.0
SRF1280A-681M
ΔT @ 25 °C
0.28 0.55
IDC (A)
0.83
1.10
1200.0
SRF1280A-102M
L @ 25 °C
L @ 125 °C
900.0
600.0
300.0
0.0
0.0
0.2 0.4 0.6 0.8 1.0
IDC (A)
100.0
SRF1280A-102M
ΔT @ 25 °C
80.0
60.0
40.0
20.0
0.0
0.0 0.20 0.40 0.60 0.80 1.00
IDC (A)
Soldering Profile
Temperature
Rising Area
+4.0 °C / sec. max.
Preheat Area
150~200 °C / 60~120 sec.
250
200
150
100
60 ~ 120 sec.
Reflow Area Forced Cooling Area
+3.0 °C / sec. max. -(1.0~5.0) °C / sec. max.
60 ~ 150 sec.
60 sec. max.
217 °C
50
Peak Temperature:
245 °C max.
Time Above 245 °C:
30 sec. max.
Time Above 217 °C:
60 ~ 150 sec. max.
How to Order
SRF1280A - 100M
Model
Value Code (see table)
0 50 100 150 200 250
Time (Seconds)
Specifications are subject to change without notice.
Users should verify actual device performance in their specific applications.
The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf.


Features *RoHS&COAEMCPLCIOANMTP,LI*A*NHTALOGEN FR EE Features Applications ■ Multipl e applications: parallel, series, ■ DC/DC converters dual-inductor and tra nsformer ■ Power supplies 10 1 ■ Magnetically shielded, low radiation Inductance range: 0.47 to 1000 μH SEPIC - DC/DC converters ■ Rated current up to 17.9 A ■ AEC-Q200 comp liant ■ RoHS compliant* and halogen free** SRF1280A Series - Dual-Winding Shielded Power Inductors Electrical Sp ecifications @ 25 °C Parallel Rating Series Rating Bourns Part No. Induct ance @ 100 KHz Tol. L (μH) (%) DCR ( ) Max. Inductance Irms Isat @ 100 KHz Tol. (A) (A) L (μH) (%) DCR (Ω) Max . Irms Isat (A) (A) SRF1280A-R47Y SRF 1280A-1R0Y SRF1280A-1R5Y SRF1280A-2R2Y SRF1280A-3R3Y SRF1280A-4R7Y SRF1280A-6R 8Y SRF1280A-8R2Y SRF1280A-100M SRF1280A -150M SRF1280A-220M SRF1280A-330M SRF12 80A-470M SRF1280A-680M SRF1280A-820M SR F1280A-101M SRF1280A-151M SRF1280A-221M SRF1280A-331M SRF1280A-471M SRF1280A-681M SRF1280A-821M SRF1280A-102M 0.47 1.0 1.5 2..
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