Features
n Shielded construction
n Inductance range: 1.0 to 1000 μH
n Heating current up to 11 A
n Dimensions: 12 x 12 x 10 mm
n AEC-Q200 qualified
n RoHS compliant* and halogen free**
Applications
n Automotive systems:
- Driver assistant - Entertainment
- Information - Lighting
n DC/DC converters
n Power supplies
SRR1210A Series - Shielded Power Inductors
Operating Temperature
................................. -40 °C to +125 °C
(Temperature rise included)
Storage Temperature
................................. -40 °C to +125 °C
Resistance to Solder Heat
................................+245°C for 10 sec.
Temperature Rise
.........................40 °C typ. at rated Irms
Inductance drop .....................20 % at Isat
Electrical Specications @ 25 °C General Specications
Core ............................................... Ferrite
Wire ..............................Enameled copper
Terminal Finish .................................... Sn
Packaging ...................... 250 pcs. per reel
Materials
Product Dimensions
*RoHS COMPLIANT
& AEC-Q200 QUALIFIED
*RoHS COMPLIANT
AEC APPROVED (Select Models)
LEAD FREE
*RoHS COMPLIANT
VERSIONS
AVAILABLE
LEAD FREE
VERSIONS ARE
RoHS COMPLIANT*
DIMENSIONS:
MM
(INCHES)
* 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.
Recommended Layout
Bourns
Part Number
Inductance
@ 1 kHz /
0.25 V
Q
Ref.
Q Test
Freq.
(MHz)
SRF
(MHz)
Typ.
DCR
(W)
Max.
I rms
(A)
I sat
(A)
***K-
Factor
L
(µH)
Tol.
(%)
SRR1210A-1R0Y 1.0 ± 30 10 7.96 85 0.006 11.0 16.5 86
SRR1210A-1R8Y 1.8 ± 30 10 7.96 56 0.075 10.2 13.2 67
SRR1210A-2R2Y 2.2 ± 30 10 7.96 54 0.09 9.5 12.2 55
SRR1210A-3R3Y 3.3 ± 30 15 7.96 44 0.01 9.0 10.5 46
SRR1210A-4R7Y 4.7 ± 30 8 7.96 35 0.012 8.5 9.6 40
SRR1210A-5R6Y 5.6 ± 30 12 7.96 28 0.0135 8.0 8.5 35
SRR1210A-6R8Y 6.8 ± 30 12 7.96 20 0.015 7.85 8.3 32
SRR1210A-8R2Y 8.2 ± 30 11 7.96 16 0.017 7.25 7.55 29
SRR1210A-100M 10 ± 20 16 2.52 12 0.018 6.5 6.5 26
SRR1210A-120M 12 ± 20 14 2.52 18 0.022 6.3 6.1 24
SRR1210A-150M 15 ± 20 16 2.52 10.5 0.032 5.8 5.3 21
SRR1210A-180M 18 ± 20 13 2.52 8 0.035 5.5 5.1 19
SRR1210A-220M 22 ± 20 16 2.52 8 0.038 5.2 4.5 17
SRR1210A-270M 27 ± 20 16 2.52 6.5 0.04 5.0 4.2 15
SRR1210A-330M 33 ± 20 16 2.52 6.5 0.052 4.4 3.7 14
SRR1210A-390M 39 ± 20 16 2.52 4.5 0.066 4.2 3.5 13
SRR1210A-470M 47 ± 20 16 2.52 4.5 0.072 3.8 3.1 12
SRR1210A-560M 56 ± 20 8 2.52 4 0.09 3.4 2.9 11
SRR1210A-680M 68 ± 20 12 2.52 3.8 0.102 3.0 2.7 10
SRR1210A-820M 82 ± 20 15 2.52 3.5 0.112 2.8 2.5 9
SRR1210A-101M 100 ± 20 16 0.796 3 0.135 2.5 2.2 8
SRR1210A-121M 120 ± 20 13 0.796 2.6 0.17 2.3 1.9 7
SRR1210A-151M 150 ± 20 12 0.796 2.2 0.19 2.2 1.8 7
SRR1210A-181M 180 ± 20 14 0.796 1.8 0.25 1.9 1.6 6
SRR1210A-221M 220 ± 20 15 0.796 1.8 0.315 1.7 1.5 5
SRR1210A-271M 270 ± 20 16 0.796 1.8 0.41 1.5 1.3 5
SRR1210A-331M 330 ± 20 14 0.796 1.8 0.45 1.4 1.2 4
SRR1210A-391M 390 ± 20 16 0.796 1.3 0.6 1.3 1.1 4
SRR1210A-471M 470 ± 20 12 0.796 0.85 0.82 1.2 1.0 4
SRR1210A-561M 560 ± 20 12 0.796 0.85 0.9 1.1 0.95 3
SRR1210A-681M 680 ± 20 11 0.796 0.85 1.2 1.0 0.85 3
SRR1210A-821M 820 ± 20 6 0.796 0.85 1.32 0.85 0.75 3
SRR1210A-102M 1000 ± 20 22 0.796 0.85 1.65 0.75 0.7 3
Electrical Schematic
How to Order
SRR1210A - 100M
Model
Value Code (see table)
1R0
12.0 ± 0.5
(.472 ± .020)
12.0 ± 0.5
(.472 ± .020)
4.9
(.193)
INDUCTANCE
CODE
10.0
(.394)
MAX.
REF.
5.3
(.209)
REF.
REF.
REF.
REF.
7.9
(.311)
2.8
(.110)
REF.
2.8
(.110)
1R0
12.0 ± 0.5
(.472 ± .020)
12.0 ± 0.5
(.472 ± .020)
4.9
(.193)
INDUCTANCE
CODE
7.3
(.287)
5.3
(.209)
REF.
REF.
REF.
2.8
(.110)
REF.
2.8
(.110)
100
***K-Factor: To calculate core ux 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.
