*R
& oHS
AE C
C OM
AP P
PR LI
OV AN
ED T
Features
■
Semi-shielded construction
■
Inductance range: 1 to 220 µH
■
Rated current up to 3.7 A
■
AEC-Q200 qualified
■
RoHS compliant* and halogen free**
SRN4018TA Series - Semi-shielded Power Inductors
Operating Temperature
................................. -55 °C to +125 °C
(Temperature rise included)
Storage Temperature .. -55 °C to +125 °C
Temperature Rise .....40 °C at rated Irms
Rated Current
............ Inductance drops 30 % at Isat
Failure In Time (FIT) ........24.7/10
9
hours
Mean Time Between Failures (MTBF)
.................................. 40.4 x 10
6
hours
Materials
Core ..............................................Ferrite
Wire ............................Enameled copper
Terminal Finish ...................................Sn
Coating .................Magnetic epoxy resin
Packaging ..... 3000 pcs. per 13-inch reel
Product Dimensions
4.0 ± 0.2
(.157 ± .008)
Inductance
@ 100 kHz / 1 V
Bourns Part No.
SRN4018TA-1R0M
SRN4018TA-1R2M
SRN4018TA-1R5M
SRN4018TA-2R2M
SRN4018TA-3R3M
SRN4018TA-4R7M
SRN4018TA-6R8M
SRN4018TA-100M
SRN4018TA-150M
SRN4018TA-220M
SRN4018TA-330M
SRN4018TA-470M
SRN4018TA-680M
SRN4018TA-101M
SRN4018TA-151M
SRN4018TA-221M
L (μH)
1.0
1.2
1.5
2.2
3.3
4.7
6.8
10
15
22
33
47
68
100
150
220
Tol. %
±20
±20
±20
±20
±20
±20
±20
±20
±20
±20
±20
±20
±20
±20
±20
±20
SRF
(MHz)
Typ.
160
150
110
70
60
50
40
35
25
20
12
10
10
8
5
5
DCR
(Ω)
±20 %
0.027
0.028
0.032
0.042
0.055
0.07
0.098
0.15
0.19
0.29
0.405
0.55
0.89
1.38
1.97
3
Irms
(A)
Typ.
3.7
3.5
3.3
2.9
2.3
2
1.7
1.5
1.1
0.9
0.75
0.6
0.55
0.45
0.35
0.3
Isat
(A)
Typ.
4
3.6
3.3
3
2.3
2
1.7
1.5
1.1
0.9
0.75
0.6
0.55
0.45
0.35
0.3
Preheating
Soldering
Natural Cooling
4.0 ± 0.2
(.157 ± .008)
TP (260 °C, 10 Sec. Max.)
Temperature (°C)
tp (245 °C, 20~40 Sec.)
1.6
REF.
(.063)
1.2
(.047)
REF.
200 °C
150°C
217 °C
60~150 Sec.
60~180
Sec.
480 Sec. Max.
1.2
(.047)
REF.
25
Time (Seconds)
1.8
(.071)
MAX.
Electrical Schematic
How to Order
SRN4018TA - 100M
Model
Value Code (see table)
Recommended Layout
4.2
(.165)
WARNING Cancer and Reproductive Harm -
www.P65Warnings.ca.gov
* 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
4.2
(.165)
1.4
(.055)
DIMENSIONS:
MM
(INCHES)
SRF0504 Series - Line Filter
SRN4018TA Series - Semi-shielded Power Inductors
Inductance vs. Current
SRN4018TA-1R0M
2.0
2.0
SRN4018TA-1R2M
2.8
SRN4018TA-1R5M
Inductance (μH)
Inductance (μH)
1.5
1.0
0.5
0
0
1
2
3
4
5
DC Current(A)
1.5
1.0
0.5
0
0
1
2
DC Current(A)
3
4
Inductance (μH)
2.1
1.4
0.7
0
0
1
2
DC Current(A)
3
4
SRN4018TA-2R2M
4
6.0
SRN4018TA-3R3M
8
SRN4018TA-4R7M
Inductance (μH)
Inductance (μH)
2
1
0
0
0.8
1.6
DC Current(A)
2.4
3.2
3.0
1.5
0
0
0.7
1.4
DC Current(A)
2.1
2.8
Inductance (μH)
3
4.5
6
4
2
0
0
0.5
1.0
DC Current(A)
1.5
2.0
SRN4018TA-6R8M
12
20
SRN4018TA-100M
28
SRN4018TA-150M
Inductance (μH)
Inductance (μH)
9
6
3
0
0
0.5
1.0
DC Current(A)
1.5
2.0
15
10
5
0
0
0.5
1.0
DC Current(A)
1.5
2.0
Inductance (μH)
21
14
7
0
0
0.3
0.6
DC Current(A)
0.9
1.2
SRN4018TA-220M
40
60
SRN4018TA-330M
80
SRN4018TA-470M
Inductance (μH)
Inductance (μH)
20
10
0
0
0.2
0.4
0.6
0.8
1.0
DC Current(A)
30
15
0
0
0.2
0.4
DC Current(A)
0.6
0.8
Inductance (μH)
30
45
60
40
20
0
0
0.2
0.4
DC Current(A)
0.6
0.8
Specifications are subject to change without notice.
Users should verify actual device performance in their specific applications.
The products described herein and in this document are subject to specific legal disclaimers set forth on the last page of this document, and at
www.bourns.com/docs/legal/disclaimer.pdf.
SRF0504 Series - Line Filter
SRN4018TA Series - Semi-shielded Power Inductors
Inductance vs. Current
SRN4018TA-680M
120
200
SRN4018TA-101M
280
SRN4018TA-151M
Inductance (μH)
Inductance (μH)
90
60
30
0
0
0.15
0.30
DC Current(A)
0.45
0.60
150
100
50
0
0
0.1
0.2
0.3
0.4
0.5
DC Current(A)
Inductance (μH)
210
140
70
0
0
0.1
0.2
DC Current(A)
0.3
0.4
SRN4018TA-221M
400
Inductance (μH)
300
200
100
0
0
0.1
0.2
DC Current(A)
0.3
0.4
12 ± 1.5
(.472 ± .059)
2.0 ± 0.5
(.079 ± .020)
13.5 ± 0.5
(.531 ± .020)
R
1.9
(.075)
R
10.5
(.413)
0.5
(.020)
100 ± 0.5
(3.937 ± .020)
13.2 ± 0.5
(.520 ± .020)
R
120 °
DIMENSIONS:
4.00 ± 0.10
(.157 ± .004)
MM
(INCHES)
330 ± 0.5
(12.992 ± .020)
1.75 ± 0.10
(.069 ± .004)
2.00 ± 0.05
(.079 ± .002)
1.50 +0.10/-0.00
(.059 +.004/-.000)
DIA.
5°
0.25 ± 0.05
(.010 ± .002)
12.0 ± 0.10
(.472 ± .004)
5.50 ± 0.05
(.217 ± .002)
8.0 ± 0.10
(.315 ± .004)
4.50 ± 0.10
(.177 ± .004)
1.50 ± 0.10
DIA.
(.059 ± .004)
8°
4.35 ± 0.10
(.171 ± .004)
1.90 ± 0.10
(.075 ± .004)
BOTTOM VIEW
USER DIRECTION OF FEED
QTY: 3000 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 in this document are subject to specific legal disclaimers set forth on the last page of this document, and at
www.bourns.com/docs/legal/disclaimer.pdf.
SRF0504 Series - Line Filter
SRN4018TA Series - Semi-shielded Power Inductors
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
REV. 03/17
Specifications are subject to change without notice.
Users should verify actual device performance in their specific applications.
The products described herein and in this document are subject to specific legal disclaimers set forth on the last page of this document, and at
www.bourns.com/docs/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
Unless otherwise expressly indicated in writing, Bourns
®
products and data sheets relating thereto are subject to change
and complete before placing orders for Bourns
®
products.
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®
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
requirements in generic applications. The characteristics and parameters of a Bourns
®
®
product with other components
the actual performance of the Bourns
®
®
®
product as meeting the requirements of a particular industry
®
of Bourns products are responsible for ensuring compliance with safety-related requirements and standards applicable to
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Bourns
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standard products that are suitable for use in aircraft
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and the user for which such Bourns
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