Features
■ Shielded construction
■ Inductance range: 1.0 to 1000 μH
■ Heating current up to 11 A
■ Dimensions: 12 x 12 x 10 mm
■ AEC-Q200 qualified
■ RoHS compliant* and halogen free**
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
Core ............................................... Ferrite
Wire ..............................Enameled copper
Terminal Finish .................................... Sn
Packaging ...................... 250 pcs. per reel
Materials
Product Dimensions
*RoHS COMPLIANT
& AEC-Q200 QUALIFIED
DIMENSIONS: MM
(INCHES)
Recommended Layout
Bourns
Part Number
Inductance
@ 1 kHz /
0.25 V Q
Ref.
Q Test
Freq.
(MHz)
SRF
(MHz)
Typ.
DCR
(Ω)
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.
REF.
7.9
(.311)
7.3
(.287)
5.3
(.209)
REF.
REF.
REF.
2.8
(.110)
REF.
2.8
(.110)
10 0
Δ I (peak-to-peak ripple current,
A),
determine core loss from Core Loss vs. Flux Density plot.
* RoHS Directive 2002/95/EC Jan. 27, 2003 including annex and RoHS Recast 2011/65/EU June 8, 2011.
**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.
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
SRR1210A Series - Shielded Power Inductors
Inductance vs. IDC
Temperature Rise vs. IDC
10.08.06.02.0 4.00.0
10.08.06.02.0 4.00.0
IDC (A)
L (µH)
IDC (A)
ΔT (°C)
L @ 25 °C L @ 125 °C
ΔT @ 25 °C
0.0
10.0
20.0
30.0
40.0
50.0
60.0
70.0
0.0
10.0
5.0
15.0
20.0
25.0
0.0
40.0
20.0
60.0
80.0
100.0
6.04.0 5.02.0 3.01.00.0
6.04.02.00.0
IDC (A)
L (µH)
IDC (A)
ΔT (°C)
L @ 25 °C L @ 125 °C
ΔT @ 25 °C
0.0
10.0
20.0
30.0
40.0
50.0
60.0
70.0
1.00.50.0
0.50.0 1.51.0 2.5 3.0 3.52.0
2.5 3.0 3.52.01.5
IDC (A)
L (µH)
IDC (A)
ΔT (°C)
L @ 25 °C L @ 125 °C
ΔT @ 25 °C
0.0
10.0
20.0
30.0
40.0
50.0
60.0
70.0
0.40.20.0 0.80.6 1.0
IDC (A)
L (µH)
IDC (A)
ΔT (°C)
L @ 25 °C L @ 125 °C
ΔT @ 25 °C
0.0
20.0
10.0
30.0
40.0
50.0
60.0
70.0
80.0
0.6 0.8 1.00.40.20.0
0.0
400
200
600
800
1000
1200
SRR1210A-4R7Y SRR1210A-220M
SRR1210A-101M SRR1210A-102M
SRR1210A-4R7Y SRR1210A-220M
SRR1210A-101M SRR1210A-102M
0.0
2.0
1.0
3.0
4.0
5.0
6.0
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.
3312 - 2 mm SMD Trimming Potentiometer SRR1210A Series - Shielded Power Inductors
Peak Temperature:
245 °C max.
Time Above 245 °C:
30 sec. max.
Time Above 217 °C:
60 ~ 150 sec. max.
250
Temperature (°C)
050
50
200
150
100
+4.0 °C / sec. max. 150~200 °C / 60~120 sec. +3.0 °C / sec. max. -(1.0~5.0) °C / sec. max.
Temperature
Rising Area Preheat Area Reflow Area Forced Cooling Area
200
Time (Seconds)
100 150
60 ~ 150 sec.
60 sec. max.
217 °C
60 ~ 120 sec.
250
Core Loss vs. Flux Density
Flux Density Bp-p (gauss)
10
100
1000
1
10 100
1 MHz
800 KHz
500 KHz
400 KHz
300 KHz
200 KHz
1000
0.1
0.01
10000
Core Loss (mW)
100 KHz
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.
SRR1210A Series - Shielded Power Inductors
REV. 02/17
DIMENSIONS: MM
(INCHES)
QTY: 250 PCS. PER REEL
26 +0
(1.024 +0)
30.4
(1.197)
2.0 ± 0.5
(.079 ± .020)
50.0 -0
(1.969 -0)
330
(12.99)DIA.
13.0
(.512) DIA.
13.0
(.512)
DIA.
21.0 ± 0.8
(.827 ± .031)
EMBOSSED
CARRIER
EMBOSSED
CAVITY
0.10
(.004)
THICKNESS
MAX.
1R0 1R0 1R0 1R0
USER DIRECTION OF FEED
200
(7.87)
NO COMPONENT NO COMPONENTCOMPONENTS
400
(15.75)
START
4.0
(.157)
20.0
(.787)
24.0
(.945)
END
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.
Tel: +886-2 2562-4117 • Email: asiacus@bourns.com
EMEA: Tel: +36 88 520 390 • Email: eurocus@bourns.com
The Americas: Tel: +1-951 781-5500 • Email: americus@bourns.com
www.bourns.com
Legal Disclaimer Notice
This legal disclaimer applies to purchasers and users of Bourns® products manufactured by or on behalf of Bourns, Inc. and
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Unless otherwise expressly indicated in writing, Bourns® products and data sheets relating thereto are subject to change
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