R o V ER EA
HS S I D F
CO O N R
M SA
PL
IA
N
M
PL
IA
NT
Features
This series is currently available but
not recommended for new designs.
Contact Bourns for alternative
product information.
AE
C
CO
n Semi-shielded construction
*R
oH
S
&
n Inductance range: 1 to 220 µH
n Rated current up to 3.7 A
AP *Ro
PR HS
OV CO
ED M
(S PLI
ele AN
ct T
M
od
els
SRN4018TA Series - Semi-shielded Power Inductors
AE
n RoHS compliant* and halogen free**
C
)
n AEC-Q200 qualified
Electrical Specifications @ 25 °C
General Specifications
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 (mH)
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
(W)
±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
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).........24.7/109 hours
Mean Time Between Failures (MTBF)
................................... 40.4 x 106 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)
Soldering Profile
Preheating
Soldering
4.0 ± 0.2
(.157 ± .008)
Natural Cooling
TP (260 °C, 10 Sec. Max.)
Temperature (°C)
tp (245 °C, 20~40 Sec.)
200 °C
150°C
1.6
REF.
(.063)
1.2
(.047)
REF.
217 °C
60~150 Sec.
1.2
(.047)
REF.
60~180
Sec.
480 Sec. Max.
25
Time (Seconds)
Electrical Schematic
1.8
(.071)
MAX.
How to Order
SRN4018TA - 100M
Model
Recommended Layout
4.2
(.165)
Value Code (see table)
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.
4.2
(.165)
1.4
(.055)
DIMENSIONS:
MM
(INCHES)
SRN4018TA
Series
- Semi-shielded
Power Inductors
SRF0504
Series
- Line
Filter
Inductance vs. Current
1.5
1.5
2.1
1.0
0.5
0
1
2
3
4
1.0
0.5
0
5
Inductance (μH)
2.8
0
0
1
DC Current(A)
6
1
1.6
2.4
3.0
1.5
0
3.2
Inductance (μH)
4.5
2
0
0.7
1.4
2.1
0
2.8
21
0.5
1.0
1.5
10
5
0
2.0
Inductance (μH)
15
Inductance (μH)
9
0
0
0.5
DC Current(A)
1.0
1.5
0
2.0
60
0.4
0.6
0.8
30
15
0
1.0
Inductance (μH)
45
Inductance (μH)
30
0.2
0.3
0
0.2
DC Current(A)
0.4
0.6
0
0.8
0
0.2
0.4
0.6
0.8
DC Current(A)
SRN4018TA-151M
SRN4018TA-101M
280
90
150
210
Inductance (μH)
200
Inductance (μH)
1.2
20
120
60
0.9
40
DC Current(A)
SRN4018TA-680M
0.6
SRN4018TA-470M
80
0
0
SRN4018TA-330M
10
2.0
DC Current(A)
60
20
1.5
7
DC Current(A)
SRN4018TA-220M
1.0
14
40
0
0.5
SRN4018TA-150M
SRN4018TA-100M
28
0
0
DC Current(A)
20
3
4
2
12
6
3
4
DC Current(A)
SRN4018TA-6R8M
2
SRN4018TA-4R7M
3
0.8
1
DC Current(A)
8
0
0
SRN4018TA-3R3M
Inductance (μH)
Inductance (μH)
0
4
6.0
DC Current(A)
Inductance (μH)
3
0.7
4
0
Inductance (μH)
2
1.4
DC Current(A)
SRN4018TA-2R2M
Inductance (μH)
SRN4018TA-1R5M
SRN4018TA-1R2M
2.0
Inductance (μH)
Inductance (μH)
SRN4018TA-1R0M
2.0
100
140
Specifications are subject to change without notice.
Users should verify actual device performance in their specific applications.
30
The products
described herein and this document are subject to specific 50
legal disclaimers as set forth on the last page of this document, and70at www.bourns.com/docs/legal/disclaimer.pdf.
0
0
0.15
0.30
0.45
0.60
0
0
0.1
0.2
0.3
0.4
0.5
0
0
0.1
0.2
0.3
0.4
3
0
0
0.5
1.0
1.5
10
5
0
2.0
0
0.5
DC Current(A)
1.5
0
2.0
SRN4018TA-330M
30
45
60
20
Inductance (μH)
80
30
SRN4018TA
Series
- Semi-shielded
Power Inductors
SRF0504
Series
- Line
Filter
10
0
0.2
0.4
0.6
0.8
15
0
1.0
0
0.2
0.4
DC Current(A)
SRN4018TA-680M
0.6
0
0.8
0.45
100
50
0
0.60
Inductance (μH)
Inductance (μH)
210
Inductance (μH)
150
0.30
0
0.1
0.2
DC Current(A)
0.2
0.4
0.6
0.8
SRN4018TA-151M
90
0.15
0
SRN4018TA-101M
280
0
1.2
DC Current(A)
200
30
0.9
20
120
60
0.6
40
DC Current(A)
Inductance vs. Current
0
0.3
SRN4018TA-470M
60
0
0
DC Current(A)
40
Inductance (μH)
Inductance (μH)
1.0
7
DC Current(A)
SRN4018TA-220M
14
Inductanc
Inductanc
Inductanc
6
0.4
0.3
140
70
0
0.5
0
0.1
0.2
0.3
0.4
DC Current(A)
DC Current(A)
SRN4018TA-221M
Inductance (μH)
400
300
200
100
0
0
0.1
0.2
0.3
0.4
DC Current(A)
Packaging Specifications
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)
R
0.5
(.020)
13.2 ± 0.5
(.520 ± .020)
100 ± 0.5
(3.937 ± .020)
120 °
330 ± 0.5
(12.992 ± .020)
MM
DIMENSIONS:
(INCHES)
1.75 ± 0.10
(.069 ± .004)
4.00 ± 0.10
(.157 ± .004)
2.00 ± 0.05
(.079 ± .002)
1.50 +0.10/-0.00
(.059 +.004/-.000)
DIA.
5°
12.0 ± 0.10
(.472 ± .004)
5.50 ± 0.05
(.217 ± .002)
1.50 ± 0.10
DIA.
(.059 ± .004)
8.0 ± 0.10
(.315 ± .004)
4.50 ± 0.10
(.177 ± .004)
REV. 06/22
0.25 ± 0.05
(.010 ± .002)
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 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.
Legal Disclaimer Notice
This legal disclaimer applies to purchasers and users of Bourns® products manufactured by or on behalf of Bourns, Inc. and its
affiliates (collectively, “Bourns”).
Unless otherwise expressly indicated in writing, Bourns® products and data sheets relating thereto are subject to change
without notice. Users should check for and obtain the latest relevant information and verify that such information is current and
complete before placing orders for Bourns® products.
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
requirements in generic applications. The characteristics and parameters of a Bourns® product in a user application may vary
from the data sheet characteristics and parameters due to (i) the combination of the Bourns® product with other components
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product also can and do vary in different applications and actual performance may vary over time. Users should always verify
the actual performance of the Bourns® product in their specific devices and applications, and make their own independent
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Unless Bourns has explicitly designated an individual Bourns® product as meeting the requirements of a particular industry
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Bourns® products are not recommended, authorized or intended for use in nuclear, lifesaving, life-critical or life-sustaining applications, nor in any other applications where failure or malfunction may result in personal injury, death, or severe property or
environmental damage. Unless expressly and specifically approved in writing by two authorized Bourns representatives on a
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C1753 05/17/18R
