PL
IA
NT
Features
n
Semi-shielded construction
Applications
n
DC/DC converters
n
Notebook computers
n
Digital video cameras
n
HDDs
n
Cell phones
n
Televisions, LCD displays
C
OM
*R
oH
S
4R7
LE
AD
F
RE
E
n
Miniature size
n
Low profile - 1.8 mm max.
n
Inductance range: 0.82 to 220 µH
n
High rated current - up to 4.0 A
n
RoHS compliant* and halogen free**
Electrical Specifications @ 25 °C
SRN4018 Series - Semi-shielded Power Inductors
General Specifications
Test
Freq.
(MHz)
0.2
SRF
4.0 ±
DCR
(.157 ± .008)
(MHz)
(W)
Typ.
Max.
Bourns Part No.
SRN4018-R82Y
SRN4018-1R0Y
SRN4018-1R2Y
SRN4018-1R5Y
SRN4018-2R2M
SRN4018-2R7M
SRN4018-3R3M
SRN4018-4R7M
SRN4018-6R8M
SRN4018-100M
SRN4018-150M
SRN4018-220M
SRN4018-330M
SRN4018-470M
SRN4018-680M
SRN4018-101M
SRN4018-151M
SRN4018-221M
SRN4018-331M
L (mH)
0.82
1.0
1.2
1.5
2.2
2.7
3.3
4.7
6.8
10
15
22
33
47
100
150
220
330
68
Tol. %
30
30
30
30
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
Q
(Ref.)
Ro VE LEA
HS RS D
C ION FRE
OM S E
PL AR
IA E
NT
*
Inductance
@ 100 KHz/1 V
9
9
9
9
9
9
9
9
9
7.96
7.96
7.96
7.96
7.96
7.96
7.96
7.96
7.96
2.52
2.52
2.52
2.52
2.52
2.52
100
90
80
70
60
52
45
35
30
25
18
15
12
10
8
6
5
3
6
0.019
0.023
0.032
0.044
0.052
0.066
0.084
0.180
0.264
0.348
0.552
0.780
1.128
1.596
2.400
3.552
6.36
0.118
Irms
(A)
4.0
3.7
3.1
2.9
2.3
2.2
1.9
1.5
1.3
1.0
0.9
0.7
0.6
0.5
Isat
(A)
4.7
4.2
3.5
3.0
2.4
2.3
2.0
1.6
1.4
1.1
0.025
4R7
4.0 ± 0.2
3.5
(.157 ± .008)
4.0
Operating Temperature
................................. -40 °C to +125 °C
(Temperature rise included)
Storage Temperature (Component)
................................. -40 °C to +125 °C
Resistance to Solder Heat
...............................+260 °C for 10 sec.
Temperature Rise .....40 °C at rated Irms
Rated Current
............ Inductance drops 30 % at Isat
Moisture Sensitivity Level .....................1
ESD Classification (HBM)................. N/A
Materials
Core ..............................................Ferrite
Wire ............................Enameled copper
Terminal Finish ........................Sn/Ag/Cu
Coating .................Magnetic epoxy resin
Packaging ..... 3000 pcs. per 13-inch reel
How to Order
11
11
11
11
11
23
23
30
30
11
0.95
0.75
0.62
0.50
0.45
0.35
0.30
1.88
0.796
0.796
0.796
0.796
0.42
0.32
0.28
0.2
SRN4018 - 100M
Model
Value Code (see table)
0.21
MAX.
(.074)
Electrical Schematic
Recommended Layout
4.55
(.179)
Product Dimensions
4.0 ± 0.2
(.157 ± .008)
4R7
3.6
(.142)
4.0 ± 0.2
(.157 ± .008)
1.5
(.059)
1.5
(.059)
* 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.
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.
MM
DIMENSIONS:
(INCHES)
1.8
(.071)
MAX.
4.55
Legal Disclaimer Notice
This legal disclaimer applies to purchasers and users of Bourns
®
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®
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C1753 10/18/17
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