Features
Applications
nꢀ Digitalꢀvideoꢀꢀ
cameras
nꢀ HDDsꢀ
nꢀ Semi-shieldedꢀconstruction
nꢀꢀInductanceꢀrange:ꢀ1ꢀtoꢀ150ꢀµH
nꢀꢀRatedꢀcurrentꢀupꢀtoꢀ3.2ꢀA
nꢀ AEC-Q200ꢀqualified
nꢀ Automotiveꢀꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
systems:ꢀ
-ꢀꢀDriverꢀassistantꢀ
-ꢀꢀInfotainmentꢀ
-ꢀꢀLighting
nꢀ Smartphonesꢀ
nꢀ Televisions,ꢀLCDꢀꢀ
nꢀ RoHSꢀcompliant*ꢀandꢀhalogenꢀfree**
nꢀ DC/DCꢀconverters
nꢀ Powerꢀsuppliesꢀ
ꢀ
displays
SRN4018TAꢀSeriesꢀ-ꢀSemi-shieldedꢀPowerꢀInductors
ꢀꢀ
ꢀ
Electrical Specifications @ 25 °C
General Specifications
Operating Temperature
................................. -40 °C to +125 °C
(Temperature rise included)
Storage Temperature .. -40 °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
Inductance
Q
SRF
DCR
(W)
@ 100 kHz / 1 V
(Min.)
(MHz)
Irms
(A)
3.2
3
2.7
2.2
2
1.7
1.45
1.2
0.9
0.75
0.65
0.58
0.48
0.34
0.27
Isat
(A)
4
3.6
3.3
3
2.3
2
1.6
1.3
1.1
0.9
0.7
0.6
0.52
0.42
0.31
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
L (mH) Tol. % @ 100 kHz Typ.
±20 %
1.0
1.2
1.5
2.2
3.3
4.7
6.8
10
15
22
33
47
±20
±20
±20
±20
±20
±20
±20
±20
±20
±20
±20
±20
±20
±20
±20
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
145
140
115
90
72
58
46
40
30
26
20
17
15
4
0.027
0.028
0.032
0.042
0.055
0.07
0.098
0.15
0.23
Materials
Core..............................................Ferrite
Wire ............................Enameled copper
Terminal Finish ...................................Sn
Coating.................Magnetic epoxy resin
Packaging..... 3000 pcs. per 13-inch reel
0.29
0.405
0.585
0.89
1.38
1.97
68
100
150
Product Dimensions
4.0 0.3
(.157 .01ꢀ)
4
Soldering Profile
Preheating
Soldering
Natural Cooling
4.0 0.3
(.157 .01ꢀ)
1.0
T
(260 °C, 10 Sec. Max.)
P
t
(245 °C, 20~40 Sec.)
p
217 °C
200 °C
150°C
1.65 0.ꢀ
(.065 .008)
60~150 Sec.
60~180
Sec.
1.8
(.071)
MAX.
480 Sec. Max.
25
Time (Seconds)
Recommended Layout
Electrical Schematic
How to Order
4.3
(.169)
REF.
SRN4018TA - 100M
Model
Value Code (see table)
4.3
(.169)
REF.
*RoHSꢀDirectiveꢀ2002/95/ECꢀJan.ꢀ27,ꢀ2003ꢀincludingꢀannexꢀandꢀRoHSꢀRecastꢀ2011/65/EUꢀJuneꢀ8,ꢀ2011.ꢀ
**Bournsꢀconsidersꢀaꢀproductꢀtoꢀbeꢀ“halogenꢀfree”ꢀifꢀ(a)ꢀtheꢀBromineꢀ(Br)ꢀcontentꢀisꢀ900ꢀppmꢀorꢀless;ꢀ(b)ꢀtheꢀChlorineꢀꢀ
ꢀꢀꢀꢀ(Cl)ꢀcontentꢀisꢀ900ꢀppmꢀorꢀless;ꢀandꢀ(c)ꢀtheꢀtotalꢀBromineꢀ(Br)ꢀandꢀChlorineꢀ(Cl)ꢀcontentꢀisꢀ1500ꢀppmꢀorꢀless.
Specificationsꢀareꢀsubjectꢀtoꢀchangeꢀwithoutꢀnotice.
Theꢀdeviceꢀcharacteristicsꢀandꢀparametersꢀinꢀthisꢀdataꢀsheetꢀcanꢀandꢀdoꢀvaryꢀinꢀdifferentꢀapplicationsꢀandꢀactualꢀdeviceꢀ
performanceꢀmayꢀvaryꢀoverꢀtime.
Usersꢀshouldꢀverifyꢀactualꢀdeviceꢀperformanceꢀinꢀtheirꢀspecificꢀapplications.
0.9
(.035)
ꢀ
MM
(INCHES)
REF.
DIMENSIONS:
ꢀ