Datasheet

Features
■ Available in E12 values
■ Inductance range as low as 1.1 µH
■ Current rating to 10.2 amps
■ RoHS compliant*
Applications
■ Input/output of DC/DC converters
■ Power supplies for:
- Portable communication equipment
- Camcorders
- LCD televisions
SRR1280 Series - Shielded SMD Power Inductors
Inductance Test Frequency / Voltage
SRR1280-1R1Y to -8R2Y ... 100 kHz/1 V
SRR1280-100M to -102K........ 1 kHz/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.
Temperature Rise
....................40 °C max. at rated I rms
Inductance Drop .......... 25 % typ. at I sat
Moisture Sensitivity Level .....................1
.................N/A
Core ............................Ferrite DR and RI
Wire ............. Enameled copper wire 130
Terminal ....................................Cu/Ni/Sn
Packaging .................... 400 pcs. per reel
Materials
Product Dimensions
Recommended Layout
DIMENSIONS:
MM
(INCHES)
*RoHS COMPLIANT
470
Bourns
Part Number
Inductance
Q
(Typ.)
Test
Freq.
(MHz)
SRF
Typ.
(MHz)
RDC
Max.
(mΩ)
I rms
Max.
(A)
I sat
Typ.
(A)
**K-
Factor
(μH) Tol. (%)
SRR1280-1R1Y 1.1 ± 30 26 7.96 85 6.5 10.20 14.00 94
SRR1280-1R2Y 1.2 ± 30 28 7.96 83 18.0 6.60 7.80 90
SRR1280-1R4Y 1.4 ± 30 24 7.96 80 9.8 9.80 12.00 90
SRR1280-2R4Y 2.4 ± 30 20 7.96 45 10.0 9.20 10.50 62
SRR1280-3R3Y 3.3 ± 30 20 7.96 40 12.0 8.80 9.80 54
SRR1280-3R5Y 3.5 ± 30 20 7.96 36 12.0 8.80 9.80 56
SRR1280-4R5Y 4.5 ± 30 20 7.96 34 13.5 8.50 9.00 48
SRR1280-4R7Y 4.7 ± 30 22 7.96 30 15.5 8.20 8.80 48
SRR1280-5R6Y 5.6 ± 30 20 7.96 24 16.0 8.00 8.50 44
SRR1280-6R1Y 6.1 ± 30 20 7.96 23 18.0 6.60 7.80 43
SRR1280-6R8Y 6.8 ± 30 20 7.96 22 18.5 7.60 8.00 39
SRR1280-7R5Y 7.5 ± 30 16 7.96 21 17.5 6.40 7.00 37
SRR1280-7R6Y 7.6 ± 30 15 7.96 21 20.0 5.90 6.50 35
SRR1280-8R2Y 8.2 ± 30 22 2.52 20 20.5 6.20 6.80 35
SRR1280-100M 10.0 ± 20 24 2.52 17 19.5 6.00 6.30 32
SRR1280-120M 12.0 ± 20 26 2.52 15 28.0 5.60 6.60 30
SRR1280-150M 15.0 ± 20 26 2.52 13 28.5 5.20 5.00 28
SRR1280-180M 18.0 ± 20 24 2.52 12 35.0 4.80 4.60 23
SRR1280-220M 22.0 ± 20 20 2.52 11 38.6 4.30 4.10 21
SRR1280-270M 27.0 ± 20 26 2.52 10 52.0 3.90 3.70 20
SRR1280-330M 33.0 ± 20 28 2.52 9.5 57.0 3.50 3.30 17
SRR1280-390M 39.0 ± 20 24 2.52 8.5 70.0 3.20 3.10 16
SRR1280-470M 47.0 ± 20 24 2.52 7.5 80.0 2.90 2.80 15
SRR1280-560M 56.0 ± 20 24 2.52 7.0 100.0 2.60 2.50 13
SRR1280-680M 68.0 ± 20 20 2.52 6.5 120.0 2.40 2.30 12
SRR1280-820M 82.0 ± 20 20 0.796 5.0 130.0 2.30 2.20 11
SRR1280-101M 100.0 ± 20 18 0.796 4.5 150.0 2.10 2.00 10
SRR1280-121K 120.0 ± 10 16 0.796 4.3 200.0 1.95 1.95 9
SRR1280-151K 150.0 ± 10 24 0.796 4.1 270.0 1.85 1.90 8
SRR1280-181K 180.0 ± 10 24 0.796 4.0 300.0 1.75 1.88 7
SRR1280-221K 220.0 ± 10 24 0.796 3.4 400.0 1.60 1.70 7
SRR1280-271K 270.0 ± 10 20 0.796 3.1 450.0 1.20 1.60 6
SRR1280-331K 330.0 ± 10 18 0.796 2.9 600.0 1.10 1.40 5
SRR1280-391K 390.0 ± 10 20 0.796 2.7 680.0 1.00 1.40 5
SRR1280-471K 470.0 ± 10 20 0.796 2.2 880.0 0.90 1.25 5
SRR1280-561K 560.0 ± 10 20 0.796 2.0 960.0 0.80 1.15 4
SRR1280-681K 680.0 ± 10 26 0.796 1.7 1300.0 0.75 0.97 4
SRR1280-821K 820.0 ± 10 20 0.796 1.4 1500.0 0.70 0.94 4
SRR1280-102K 1000.0 ± 10 40 0.252 1.3 1700.0 0.68 0.80 3
Electrical Schematic
2.9
(.114)
REF.
2.9
(.114)
REF.
5.4
(.213)
REF.
6.8
(.268)
REF.
100
12.5 ± 0.3
(.492 ± .012)
12.5 ± 0.3
(.492 ± .012)
7.5 ± 0.5
(.295 ± .020)
5.0 ± 0.3
(.197 ± .012)
7.0
(.276)
TYP.
Δ I (peak-to-peak ripple current,
A),
determine core loss from Core Loss vs. Flux Density plot.
WARNING Cancer and Reproductive Harm
www.P65Warnings.ca.gov
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
* RoHS Directive 2002/95/EC Jan. 27, 2003 including
annex and RoHS Recast 2011/65/EU June 8, 2011.