Features
n Semi-shielded construction
n Inductance range: 1 to 220 µH
n Rated current up to 3.7 A
n AEC-Q200 qualified
n RoHS compliant* and halogen free**
SRN4018TA Series - Semi-shielded Power Inductors
*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.
The device characteristics and parameters in this data sheet can and do vary in different applications and actual device
performance may vary over time.
Users should verify actual device performance in their specific applications.
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
Electrical Specications @ 25 °C
Bourns Part No.
Inductance
@ 100 kHz / 1 V
SRF
(MHz)
Typ.
DCR
(W)
±20 %
Irms
(A)
Typ.
Isat
(A)
Typ.L (mH) Tol. %
SRN4018TA-1R0M 1.0 ±20 160 0.027 3.7 4
SRN4018TA-1R2M 1.2 ±20 150 0.028 3.5 3.6
SRN4018TA-1R5M 1.5 ±20 110 0.032 3.3 3.3
SRN4018TA-2R2M 2.2 ±20 70 0.042 2.9 3
SRN4018TA-3R3M 3.3 ±20 60 0.055 2.3 2.3
SRN4018TA-4R7M 4.7 ±20 50 0.07 2 2
SRN4018TA-6R8M 6.8 ±20 40 0.098 1.7 1.7
SRN4018TA-100M 10 ±20 35 0.15 1.5 1.5
SRN4018TA-150M 15 ±20 25 0.19 1.1 1.1
SRN4018TA-220M 22 ±20 20 0.29 0.9 0.9
SRN4018TA-330M 33 ±20 12 0.405 0.75 0.75
SRN4018TA-470M 47 ±20 10 0.55 0.6 0.6
SRN4018TA-680M 68 ±20 10 0.89 0.55 0.55
SRN4018TA-101M 100 ±20 8 1.38 0.45 0.45
SRN4018TA-151M 150 ±20 5 1.97 0.35 0.35
SRN4018TA-221M 220 ±20 5 3 0.3 0.3
General Specications
Core ..............................................Ferrite
Wire ............................Enameled copper
Terminal Finish ...................................Sn
Coating .................Magnetic epoxy resin
Packaging ..... 3000 pcs. per 13-inch reel
Materials
Product Dimensions
Recommended Layout
DIMENSIONS:
MM
(INCHES)
Electrical Schematic
How to Order
SRN4018TA - 100M
Model
Value Code (see table)
*RoHS COMPLIANT
& AEC APPROVED
*RoHS COMPLIANT
AEC APPROVED (Select Models)
LEAD FREE
*RoHS COMPLIANT
VERSIONS
AVAILABLE
LEAD FREE
VERSIONS ARE
RoHS COMPLIANT*
Soldering Prole
25
Temperature (°C)
Time (Seconds)
Preheating Soldering Natural Cooling
217 °C
t
p
(245 °C, 20~40 Sec.)
200 °C
150°C
60~180
Sec.
480 Sec. Max.
60~150 Sec.
T
P
(260 °C, 10 Sec. Max.)
1.4
(.055)
4.2
(.165)
4.2
(.165)
4.0 ± 0.2
(.157 ± .008)
4.0 ± 0.2
(.157 ± .008)
1.2
(.047)
1.8
(.071)
MAX.
REF.
1.6
(.063)
REF.
1.2
(.047)
REF.
Applications
n Automotive
systems:
- Driver assistant
- Infotainment
- Lighting
n DC/DC converters
n Power supplies
n Digital video
cameras
n HDDs
n Smartphones
n Televisions, LCD
displays
