*R
& oHS
AE C
C OM
AP P
PR LI
OV A N
ED T
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
Operating Temp........... -40 °C to +150 °C
(Temperature rise included)
Storage Temperature .. -40 °C to +150 °C
Temperature Rise
..................... 20 °C typ. at rated Irms
1
40 °C typ. at rated Irms
2
Rated Current
............ Inductance drops 35 % at Isat
Moisture Sensitivity Level ..................... 1
.................N/A
Materials
Core ..............................................Ferrite
Wire ............................Enameled copper
Terminal Finish ...................................Sn
Packaging ....... 1000 pcs. per 7-inch reel
Product Dimensions
3.80
±
0.20
(.150
±
.008)
Bourns
Part Number
Inductance @
100 kHz/0.1 V
L (μH)
Tol. (%)
SRF
(MHz)
Typ.
DCR (mΩ)
Typ.
Max.
I rms
1
(A)
Typ.
I rms
2
(A)
Typ.
I sat
(A)
SRR3818A-1R0Y
SRR3818A-1R5Y
SRR3818A-2R2Y
SRR3818A-2R7Y
SRR3818A-3R3Y
SRR3818A-3R9Y
SRR3818A-4R7Y
SRR3818A-6R8Y
SRR3818A-100M
SRR3818A-150M
SRR3818A-220M
SRR3818A-330M
SRR3818A-470M
SRR3818A-680M
SRR3818A-101M
1.0
1.5
2.2
2.7
3.3
3.9
4.7
6.8
10
15
22
33
47
68
100
± 30
± 30
± 30
± 30
± 30
± 30
± 30
± 30
± 20
± 20
± 20
± 20
± 20
± 20
± 20
165
125
95
90
75
70
60
50
40
30
25
20
15
13
11
27.5
33
45.5
49.5
64.5
80
90
125
180
260
395
590
825
1280
2040
37
47
60
65
85
105
120
160
235
340
500
740
1030
1600
2600
2.75
2.5
2
1.9
1.7
1.6
1.5
1.25
1
0.8
0.65
0.5
0.45
0.38
0.28
3.6
3.1
2.6
2.5
2.1
2
1.9
1.6
1.3
1.05
0.8
0.65
0.56
0.46
0.34
2.1
1.6
1.4
1.3
1.15
1.05
0.95
0.8
0.65
0.55
0.43
0.34
0.3
0.24
0.2
How to Order
Electrical Schematic
SRR3818A - 1R0Y
Model
Value Code (see table)
3.80
±
0.20
(.150
±
.008)
Recommended Layout
4.30
(.169)
1.60
(.063)
1.80
±
0.20
(.071
±
.008)
1.10
(.043)
1.20
±
0.20
(.047
±
.008)
1.30
±
0.20
(.051
±
.008)
1.60
(.063)
DIMENSIONS:
MM
(INCHES)
1.30
±
0.20
(.051
±
.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.
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 Power Inductors
SRR3818A Series - Shielded
Inductance vs. IDC
SRR3818A-1R0Y
120%
100%
80%
120%
100%
80%
SRR3818A-1R5Y
120%
100%
80%
SRR3818A-2R2M
L/LOA
L/LOA
60%
40%
20%
0%
0
0.5
1.0
1.5
2.0
2.5
60%
40%
20%
0%
0
0.5
1.0
1.5
2.0
L/LOA
60%
40%
20%
0%
0
0.5
1.0
1.5
2.0
IDC (A)
120%
100%
80%
IDC (A)
120%
100%
80%
IDC (A)
120%
100%
80%
SRR3818A-2R7M
SRR3818A-3R3M
SRR3818A-3R9M
L/LOA
L/LOA
L/LOA
60%
40%
20%
0%
0
0.4
0.8
1.2
1.6
60%
40%
20%
0%
0
0.3
0.6
0.9
1.2
1.5
60%
40%
20%
0%
0
0.3
0.6
0.9
1.2
IDC (A)
120%
100%
IDC (A)
120%
100%
IDC (A)
SRR3818A-100M
120%
100%
80%
SRR3818A-4R7M
SRR3818A-6R8M
L/LOA
L/LOA
80%
60%
40%
20%
0%
0
0.3
0.6
0.9
1.2
80%
60%
40%
20%
0%
0
0.2
0.4
0.6
0.8
1.0
L/LOA
60%
40%
20%
0%
0
0.2
0.4
0.6
0.8
IDC (A)
SRR3818A-150M
120%
100%
80%
120%
100%
80%
IDC (A)
SRR3818A-220M
120%
100%
80%
IDC (A)
SRR3818A-330M
L/LOA
L/LOA
60%
40%
20%
0%
0.0
0.1
0.2
0.3
0.4
0.5
0.6
60%
40%
20%
0%
0
0.1
0.2
0.3
0.4
0.5
L/LOA
60%
40%
20%
0%
0
0.1
0.2
0.3
0.4
IDC (A)
IDC (A)
IDC (A)
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 Power Inductors
SRR3818A Series - Shielded
Inductance vs. IDC (Continued)
SRR3818A-470M
120%
100%
80%
120%
100%
80%
SRR3818A-680M
120%
100%
80%
SRR3818A-101M
L/LOA
L/LOA
60%
40%
20%
0%
0
0.1
0.2
0.3
0.4
60%
40%
20%
0%
0
0.1
0.2
0.3
L/LOA
60%
40%
20%
0%
0
0.1
0.1
0.3
0.2
0.3
IDC (A)
Temperature vs. IDC
SRR3818A-1R0Y
60
48
IDC (A)
IDC (A)
SRR3818A-1R5Y
50
40
50
40
SRR3818A-2R2M
ΔT
(°C)
36
24
12
0
0
1
2
3
4
5
ΔT
(°C)
ΔT
(°C)
30
20
10
0
0
1
2
3
4
30
20
10
0
0
0.6
1.2
1.8
2.4
3.0
IDC (A)
50
40
IDC (A)
50
40
IDC (A)
50
40
SRR3818A-2R7M
SRR3818A-3R3M
SRR3818A-3R9M
ΔT
(°C)
ΔT
(°C)
30
20
10
0
30
20
10
0
ΔT
(°C)
0
0.5
1.0
1.5
2.0
2.5
30
20
10
0
0
0.6
1.2
1.8
2.4
3.0
0
0.5
1.0
1.5
2.0
2.5
IDC (A)
50
40
IDC (A)
60
48
IDC (A)
50
40
SRR3818A-4R7M
SRR3818A-6R8M
SRR3818A-100M
ΔT
(°C)
ΔT
(°C)
ΔT
(°C)
0
0.5
1.0
1.5
2.0
30
20
10
0
36
24
12
0
30
20
10
0
0
0.4
0.8
1.2
1.6
0
0.45
0.90
1.35
1.80
2.25
IDC (A)
IDC (A)
IDC (A)
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 Power Inductors
SRR3818A Series - Shielded
Temperature vs. IDC (Continued)
SRR3818A-150M
50
40
50
40
SRR3818A-220M
50
40
SRR3818A-330M
ΔT
(°C)
30
20
10
0
0
0.3
0.6
0.9
1.2
ΔT
(°C)
ΔT
(°C)
30
20
10
0
0
0.2
0.4
0.6
0.8
1.0
30
20
10
0
0
0.4
0.4
0.6
0.8
IDC (A)
50
40
IDC (A)
60
48
IDC (A)
SRR3818A-101M
50
40
SRR3818A-470M
SRR3818A-680M
ΔT
(°C)
ΔT
(°C)
30
20
10
0
0.0
36
24
12
0
0.0
ΔT
(°C)
0.1
0.2
0.3
0.4
0.5
0.6
30
20
10
0
0
0.1
0.2
0.3
0.4
0.1
0.2
0.3
0.4
0.5
0.6
0.7
IDC (A)
IDC (A)
IDC (A)
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
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 Power Inductors
SRR3818A Series - Shielded
Temperature
Rising Area
+4.0 °C/Sec. Max.
Preheat
Area
150~200 °C / 60~120 Sec.
Reflow
Area
+3.0 °C/Sec. Max.
Forced
Cooling Area
-(1.0~5.0) °C/Sec. Max.
250
Peak Temperature: 260 °C
217 °C
Temperature (°C)
200
150
100
50
60~120 Sec.
60~150 Sec.
60 Sec.
Max.
Peak Temperature 260
max.
Max. Peak Temperature -5
30 sec. max.
Max. Time Above 217 : 60~150 sec. max.
0
50
100
150
200
250
Time (Seconds)
178
DIA.
(7.001)
2.0 ± 0.5
(.079 ± .020)
16.5
(.650)
13.0
(.512)
DIA.
50.0 -0
(1.969 - 0)
21.0 ± 0.8
(.827 ± .031)
13.0
DIA.
(.512)
14.0 +0
(.551 +0)
END
12.0
(.472)
2.0
(.079)
8.0
(.315)
START
100
100
100
100
L eader
no component
200 m/m min.
C omponents
T railer
no component
400 m/m min.
USER DIRECTION OF FEED
QTY: 1000 PCS. PER REEL
DIMENSIONS:
MM
(INCHES)
08/17
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.
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