Features
Applications
nꢀ Semi-shieldedꢀconstruction
nꢀꢀInductanceꢀrange:ꢀ1ꢀtoꢀ220ꢀµH
nꢀꢀRatedꢀcurrentꢀupꢀtoꢀ3ꢀA
nꢀ RoHSꢀcompliant*ꢀandꢀhalogenꢀfree**
nꢀ DC/DCꢀconverters
nꢀ Notebookꢀcomputers
nꢀ Digitalꢀvideoꢀcameras
nꢀ HDDsꢀ
150
nꢀ Cellphonesꢀ
nꢀ Televisions,ꢀLCDꢀdisplays
SRN4026ꢀSeriesꢀ-ꢀSemi-shieldedꢀPowerꢀInductors
ꢀꢀ
ꢀ
Electrical Specifications @ 25 °C
General Specifications
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
@ 100 KHz / 1 V
Test
Freq.
(MHz)
SRF
(MHz)
Typ.
DCR
(W)
Max.
Q
(Ref.)
Irms
(A)
Isat
(A)
Bourns Part No. L (mH) Tol. %
SRN4026-1R0Y
SRN4026-1R2Y
SRN4026-2R2Y
SRN4026-3R3M
SRN4026-4R7M
SRN4026-6R8M
SRN4026-100M
SRN4026-150M
SRN4026-220M
SRN4026-330M
SRN4026-470M
SRN4026-680M
SRN4026-101M
SRN4026-151M
SRN4026-221M
1.0
1.2
2.2
3.3
4.7
6.8
10
30
30
30
20
20
20
20
20
20
20
20
20
20
20
20
9
9
7.96
7.96
7.96
7.96
7.96
7.96
7.96
2.52
2.52
2.52
2.52
2.52
0.796
0.796
0.796
100
80
60
50
40
28
26
21
16
13
10
9
0.016
0.024
0.029
0.036
0.048
0.084
0.102
0.144
0.234
0.366
0.594
0.852
1.2
3
3
2.75
2.1
2.75
2.1
9
9
1.6
1.6
9
1.4
1.4
............ Inductance drops 30 % at Isat
Moisture Sensitivity Level.....................1
ESD Classification (HBM)................. N/A
9
1.2
1.2
11
11
11
16
19
19
30
30
30
0.97
0.77
0.67
0.5
0.97
0.77
0.67
0.5
15
Materials
22
Core..............................................Ferrite
Wire ............................Enameled copper
Terminal Finish ........................Sn/Ag/Cu
Coating.................Magnetic epoxy resin
Packaging..... 3000 pcs. per 13-inch reel
33
47
0.4
0.4
68
0.35
0.3
0.35
0.3
100
150
220
7
6
1.92
0.22
0.2
0.22
0.2
4
2.76
Product Dimensions
4.0 0.ꢀ
(.157 .00ꢁ8
Soldering Profile
Temperature
Rising Area
Preheat
Area
Reflow
Area
Forced
Cooling Area
+4.0 °C/Sec. Max.
150~200 °C / 60~120 Sec.
+3.0 °C/Sec. Max.
-(1.0~5.0) °C/Sec. Max.
4.0 0.ꢀ
(.157 .00ꢁ8
Peak Temperature: 260 °C
250
200
150
100
50
217 °C
60~150 Sec.
60 Sec.
Max.
60~120 Sec.
ReflowꢀꢁꢂꢁWLPHVꢁPD[ꢅꢁꢁ
Peak Temp.ꢀꢁꢂꢃꢄꢁr&ꢁPD[ꢅꢁꢁ
Max. Peak Temp. -5 ഒꢀꢁꢁ
30 sec. max.
Max. Time Above 217 ഒ:
60~150 sec. max.
50
100
150
200
250
0
Time (Seconds)
How to Order
ꢀ.5
(.09ꢁ8
MAX.
ꢀ
MM
(INCHES)
Electrical Schematic
DIMENSIONS:
ꢀ
SRN4026 - 4R7M
Recommended Layout
Model
Value Code (see table)
4.55
(.1798
*RoHSꢀDirectiveꢀ2002/95/ECꢀJan.ꢀ27,ꢀ2003ꢀincludingꢀannexꢀandꢀRoHSꢀRecastꢀ2011/65/EUꢀJuneꢀ8,ꢀ2011.ꢀ
3.6
(.14ꢀ8
**Bournsꢀfollowsꢀtheꢀprevailingꢀdefinitionꢀofꢀ“halogenꢀfree”ꢀinꢀtheꢀindustry.ꢀꢀBournsꢀconsidersꢀaꢀproductꢀtoꢀbeꢀ“halogenꢀ
ꢀꢀꢀꢀfree”ꢀifꢀ(a)ꢀtheꢀBromineꢀ(Br)ꢀcontentꢀisꢀ900ꢀppmꢀorꢀless;ꢀ(b)ꢀtheꢀChlorineꢀ(Cl)ꢀcontentꢀisꢀ900ꢀppmꢀorꢀless;ꢀandꢀ(c)ꢀtheꢀꢀ
ꢀꢀꢀꢀtotalꢀBromineꢀ(Br)ꢀandꢀChlorineꢀ(Cl)ꢀcontentꢀisꢀ1500ꢀppmꢀorꢀless.
Specificationsꢀareꢀsubjectꢀtoꢀchangeꢀwithoutꢀnotice.
Theꢀdeviceꢀcharacteristicsꢀandꢀparametersꢀinꢀthisꢀdataꢀsheetꢀcanꢀandꢀdoꢀvaryꢀinꢀdifferentꢀapplicationsꢀandꢀactualꢀdeviceꢀ
performanceꢀmayꢀvaryꢀoverꢀtime.
Usersꢀshouldꢀverifyꢀactualꢀdeviceꢀperformanceꢀinꢀtheirꢀspecificꢀapplications.
1.5
(.0598
1.5
(.0598