Features
Shielded construction
Inductance range: 1 to 100 µH
Heating current up to 3.6 A
AEC-Q200 qualified
RoHS compliant* and halogen free**
SRR3818A Series - Shielded Power Inductors
*RoHS Directive 2015/863, Mar 31, 2015 and Annex.
Operating Temp. .......... -40 °C to +150 °C
(Temperature rise included)
Storage Temperature .. -40 °C to +150 °C
Temperature Rise
..................... 20 °C typ. at rated Irms1
40 °C typ. at rated Irms2
Rated Current
............ Inductance drops 35 % at Isat
Moisture Sensitivity Level .....................1
.................N/A
Core ..............................................Ferrite
Wire ............................Enameled copper
Terminal Finish ...................................Sn
Packaging ....... 1000 pcs. per 7-inch reel
Materials
Product Dimensions
DIMENSIONS: MM
(INCHES)
Bourns
Part Number
Inductance @
100 kHz/0.1 V SRF
(MHz)
Typ.
DCR (mΩ)I rms1
(A)
Typ.
I rms2
(A)
Typ.
I sat
(A)
L (μH) Tol. (%) Typ. Max.
SRR3818A-1R0Y 1.0 ± 30 165 27.5 37 2.75 3.6 2.1
SRR3818A-1R5Y 1.5 ± 30 125 33 47 2.5 3.1 1.6
SRR3818A-2R2Y 2.2 ± 30 95 45.5 60 2 2.6 1.4
SRR3818A-2R7Y 2.7 ± 30 90 49.5 65 1.9 2.5 1.3
SRR3818A-3R3Y 3.3 ± 30 75 64.5 85 1.7 2.1 1.15
SRR3818A-3R9Y 3.9 ± 30 70 80 105 1.6 2 1.05
SRR3818A-4R7Y 4.7 ± 30 60 90 120 1.5 1.9 0.95
SRR3818A-6R8Y 6.8 ± 30 50 125 160 1.25 1.6 0.8
SRR3818A-100M 10 ± 20 40 180 235 1 1.3 0.65
SRR3818A-150M 15 ± 20 30 260 340 0.8 1.05 0.55
SRR3818A-220M 22 ± 20 25 395 500 0.65 0.8 0.43
SRR3818A-330M 33 ± 20 20 590 740 0.5 0.65 0.34
SRR3818A-470M 47 ± 20 15 825 1030 0.45 0.56 0.3
SRR3818A-680M 68 ± 20 13 1280 1600 0.38 0.46 0.24
SRR3818A-101M 100 ± 20 11 2040 2600 0.28 0.34 0.2
*RoHS COMPLIANT
& AEC APPROVED
3.80 ± 0.20
(.150 ± .008)
3.80 ± 0.20
(.150 ± .008)
1.80 ± 0.20
(.071 ± .008)
1.20 ± 0.20
(.047 ± .008)
1.30 ± 0.20
(.051 ± .008)
1.30 ± 0.20
(.051 ± .008)
Recommended Layout
Electrical Schematic
How to Order
SRR3818A - 1R0Y
Model
Value Code (see table)
4.30
(.169)
1.10
(.043)
1.60
(.063)
1.60
(.063)
DIMENSIONS: MM
(INCHES)
**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
SRF0504 Series - Line Filter
Inductance vs. IDC
SRR3818A Series - Shielded Power Inductors
IDC (A)
L/LOA
60%
80%
100%
120%
0%
20%
40%
0 0.5 1.0 1.5 2.0 2.5
SRR3818A-1R0Y
IDC (A)
L/LOA
60%
80%
100%
120%
0%
20%
40%
0 0.5 1.0 1.5 2.0
SRR3818A-1R5Y
IDC (A)
L/LOA
60%
80%
100%
120%
0%
20%
40%
0 0.5 1.0 1.5 2.0
SRR3818A-2R2M
IDC (A)
L/LOA
60%
80%
100%
120%
0%
20%
40%
0 0.4 0.8 1.2 1.6
SRR3818A-2R7M
IDC (A)
L/LOA
60%
80%
100%
120%
0%
20%
40%
0 0.3 0.6 0.9 1.2 1.5
SRR3818A-3R3M
IDC (A)
L/LOA
60%
80%
100%
120%
0%
20%
40%
0 0.3 0.6 0.9 1.2
SRR3818A-3R9M
IDC (A)
L/LOA
60%
80%
100%
120%
0%
20%
40%
0 0.3 0.6 0.9 1.2
SRR3818A-4R7M
IDC (A)
L/LOA
60%
80%
100%
120%
0%
20%
40%
0 0.2 0.4 0.6 0.8 1.0
SRR3818A-6R8M
IDC (A)
L/LOA
60%
80%
100%
120%
0%
20%
40%
0 0.2 0.4 0.6 0.8
SRR3818A-100M
IDC (A)
L/LOA
60%
80%
100%
120%
0%
20%
40%
0.0 0.1 0.2 0.3 0.4 0.5 0.6
SRR3818A-150M
IDC (A)
L/LOA
60%
80%
100%
120%
0%
20%
40%
0 0.1 0.2 0.3 0.4 0.5
SRR3818A-220M
IDC (A)
L/LOA
60%
80%
100%
120%
0%
20%
40%
0 0.1 0.2 0.3 0.4
SRR3818A-330M
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 disclaimers as set forth on the last page of this document, and at www.bourns.com/legal/disclaimer.pdf.
SRF0504 Series - Line Filter
Inductance vs. IDC (Continued)
SRR3818A Series - Shielded Power Inductors
IDC (A)
L/LOA
60%
80%
100%
120%
0%
20%
40%
0 0.1 0.2 0.3 0.4
SRR3818A-470M
IDC (A)
L/LOA
60%
80%
100%
120%
0%
20%
40%
0 0.1 0.2 0.3
SRR3818A-680M
IDC (A)
L/LOA
60%
80%
100%
120%
0%
20%
40%
0 0.1 0.1 0.3 0.2 0.3
SRR3818A-101M
Temperature vs. IDC
IDC (A)
ΔT (°C)
36
48
60
0
12
24
012 345
SRR3818A-1R0Y
IDC (A)
ΔT (°C)
30
40
50
0
10
20
01 2 3 4
SRR3818A-1R5Y
IDC (A)
ΔT (°C)
30
40
50
0
10
20
0 0.6 1.2 1.8 2.4 3.0
SRR3818A-2R2M
IDC (A)
ΔT (°C)
30
40
50
0
10
20
0 0.6 1.2 1.8 2.4 3.0
SRR3818A-2R7M
IDC (A)
ΔT (°C)
30
40
50
0
10
20
0 0.5 1.0 1.5 2.0 2.5
SRR3818A-3R3M
IDC (A)
ΔT (°C)
30
40
50
0
10
20
0 0.5 1.0 1.5 2.0 2.5
SRR3818A-3R9M
IDC (A)
ΔT (°C)
30
40
50
0
10
20
0 0.45 0.90 1.35 1.80 2.25
SRR3818A-4R7M
IDC (A)
ΔT (°C)
36
48
60
0
12
24
0 0.5 1.0 1.5 2.0
SRR3818A-6R8M
IDC (A)
ΔT (°C)
30
40
50
0
10
20
0 0.4 0.8 1.2 1.6
SRR3818A-100M
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 disclaimers as set forth on the last page of this document, and at www.bourns.com/legal/disclaimer.pdf.
SRF0504 Series - Line Filter
Temperature vs. IDC (Continued)
SRR3818A Series - Shielded Power Inductors
IDC (A)
ΔT (°C)
30
40
50
0
10
20
0 0.3 0.6 0.9 1.2
SRR3818A-150M
IDC (A)
ΔT (°C)
30
40
50
0
10
20
0 0.2 0.4 0.6 0.8 1.0
SRR3818A-220M
IDC (A)
ΔT (°C)
30
40
50
0
10
20
0 0.4 0.4 0.6 0.8
SRR3818A-330M
IDC (A)
ΔT (°C)
30
40
50
0
10
20
0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7
SRR3818A-470M
IDC (A)
ΔT (°C)
36
48
60
0
12
24
0.0 0.1 0.2 0.3 0.4 0.5 0.6
SRR3818A-680M
IDC (A)
ΔT (°C)
30
40
50
0
10
20
0 0.1 0.2 0.3 0.4
SRR3818A-101M
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 disclaimers as set forth on the last page of this document, and at www.bourns.com/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
DIMENSIONS: MM
(INCHES)
14.0 +0
(.551 +0)
16.5
(.650)
2.0 ± 0.5
(.079 ± .020)
50.0 -0
(1.969 - 0)
178
(7.001)DIA.
DIA.
13.0
(.512)
13.0
(.512)
DIA.
21.0 ± 0.8
(.827 ± .031)
12.0
(.472)
Components
200 m/m min.
Leader
no component
Trailer
400 m/m min.
no component
START
END
2.0
(.079)
8.0
(.315)
100 100 100 100
USER DIRECTION OF FEED
08/17
SRF0504 Series - Line Filter
SRR3818A Series - Shielded Power Inductors
200
250
150
200
100
50
0
Temperature (°C)
10050 150
Time (Seconds)
+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
250
Peak Temperature: 260 °C
217 °C
60~120 Sec.
60 Sec.
Max.
60~150 Sec.
Max. Peak Temperature -5 30 sec. max.
Max. Time Above 217 : 60~150 sec. max.
Peak Temperature 260 max.
QTY: 1000 PCS. PER REEL
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 disclaimers as set forth on the last page of this document, and at www.bourns.com/legal/disclaimer.pdf.
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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The characteristics and parameters of a Bourns® product set forth in its data sheet are based on laboratory conditions, and
statements regarding the suitability of products for certain types of applications are based on Bourns’ knowledge of typical
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the user’s sole risk.
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also apply to such Bourns® custom products.
Users shall not sell, transfer, export or re-export any Bourns®WYVK\J[ZVY[LJOUVSVN`MVY\ZLPUHJ[P]P[PLZ^OPJOPU]VS]L[OL
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