Features
nꢀ Shieldedꢀconstruction
Applications
nꢀ Automotiveꢀsystems:ꢀ
ꢀ
ꢀ
ꢀ
-ꢀꢀDriverꢀassistantꢀ
-ꢀꢀInfotainmentꢀ
-ꢀꢀLighting
nꢀꢀInductanceꢀrange:ꢀ0.68ꢀtoꢀ330ꢀµH
nꢀꢀHeatingꢀcurrentꢀupꢀtoꢀ9.5A
nꢀꢀAEC-Q200ꢀqualified
100
nꢀ DC/DCꢀconverters
nꢀ Powerꢀsupplies
nꢀ RoHSꢀcompliant*ꢀandꢀhalogenꢀfree**
SRR1050AꢀSeriesꢀ-ꢀShieldedꢀPowerꢀInductors
ꢀꢀ
ꢀ
Electrical Specifications @ 25 °C
General Specifications
Operating Temperature
................................. -40 °C to +125 °C
(Temperature rise included)
Inductance @
100 kHz/0.1V
L (µH) Tol. (%)
SRF
(MHz)
Typ.
DCR (W)
Typ. Max.
I rms
(A)
Bourns
Part Number
I sat
(A)
***K-
Factor
Storage Temperature .. -40 °C to +125 °C
Temperature Rise
.......................40 °C typ. at rated Irms
Rated Current
............ Inductance drops 35 % at Isat
Failure In Time (FIT)........24.7/109 hours
Mean Time Between Failures (MTBF)
..................................40.4 x 106 hours
SRR1050A-R68Y 0.68
± 30
± 30
± 30
± 30
± 30
± 30
± 30
± 30
± 30
± 30
± 30
± 30
± 30
± 30
± 30
± 30
± 30
± 30
± 30
± 30
± 30
± 30
± 30
± 30
± 30
± 30
110
85
53
40
29
27
21
16.5
15
14
11
10.5
10
9
6.8
5.9
5.5
5
0.0045 0.0055 9.50
13.5
10.5
8.20
7.80
6.40
5.40
4.85
4.45
4.00
3.60
3.20
2.95
2.70
2.40
2.30
2.00
1.90
1.65
1.50
1.35
1.28
1.12
1.04
0.94
0.84
0.75
221
158
123
100
85
65
58
58
53
44
41
38
33
30
28
26
24
22
20
18
16
15
13
12
11
SRR1050A-1R2Y
SRR1050A-2R2Y
SRR1050A-3R3Y
SRR1050A-4R2Y
SRR1050A-6R8Y
SRR1050A-8R2Y
SRR1050A-100Y
SRR1050A-120Y
SRR1050A-150Y
SRR1050A-180Y
SRR1050A-220Y
SRR1050A-270Y
SRR1050A-330Y
SRR1050A-390Y
SRR1050A-470Y
SRR1050A-560Y
SRR1050A-680Y
SRR1050A-820Y
SRR1050A-101Y
SRR1050A-121Y
SRR1050A-151Y
SRR1050A-181Y
SRR1050A-221Y
SRR1050A-271Y
SRR1050A-331Y
1.2
2.2
3.3
4.2
6.8
8.2
10
12
15
18
22
27
33
39
47
56
68
82
0.0058 0.007
0.0071 0.009
0.0086 0.011
0.0104 0.014
0.0151 0.019
0.0181 0.022
8.30
7.20
6.50
6.10
5.40
5.00
4.50
3.80
3.40
3.10
2.90
2.60
2.50
2.25
2.00
1.90
1.60
1.45
1.35
1.18
1.10
1.00
0.94
0.80
0.73
0.023
0.026
0.035
0.038
0.046
0.057
0.069
0.079
0.094
0.124
0.138
0.150
0.179
0.213
0.253
0.307
0.373
0.491
0.613
0.031
0.035
0.047
0.051
0.062
0.077
0.093
0.106
0.127
0.160
0.208
0.230
0.255
0.305
0.370
0.420
0.500
0.675
0.815
Materials
Core..............................................Ferrite
Wire ............................Enameled copper
Terminal Finish ...................................Sn
Packaging....... 700 pcs. per 13-inch reel
Product Dimensions
10.0 0.ꢀ
(.ꢀ94 .01ꢁ2
4.5
4.2
3.8
3.6
3.4
3
100
120
150
180
220
270
330
10.ꢁ0 0.ꢀ
(.40ꢁ .01ꢁ2
MAX.
330
2.4
2
10
***K-Factor: To calculate core flux density, Bp-p (gauss) = K x L(µH) x Δ I (peak-to-peak ripple current,
A), determine core loss from Core Loss vs. Flux Density plot.
Core Loss vs. Flux Density
4.80 0.ꢀ
1000
(.189 .01ꢁ2
ꢀ.00 0.ꢀ
(.118 .01ꢁ2
100
10
7.80 0.4
(.ꢀ07 .01ꢂ2
100 KHz
50 KHz
10 KHz
500 KHz
300 KHz
200 KHz
1
0.10
1.ꢁ0 0.1ꢃ
(.047 .00ꢂ2
1ꢀ.00
REF.
(.ꢃ1ꢁ2
0.01
ꢀ
MM
(INCHES)
DIMENSIONS:
ꢀ
0.001
100
1000
10000
*RoHSꢀDirectiveꢀ2002/95/ECꢀJan.ꢀ27,ꢀ2003ꢀincludingꢀ
annexꢀandꢀRoHSꢀRecastꢀ2011/65/EUꢀJuneꢀ8,ꢀ2011.ꢀ
**Bournsꢀconsidersꢀaꢀproductꢀtoꢀbeꢀ“halogenꢀfree”ꢀifꢀ(a)ꢀtheꢀBromineꢀ(Br)ꢀcontentꢀisꢀ900ꢀppmꢀorꢀless;ꢀ
Flux Density Bp-p (gauss)
(b)ꢀtheꢀChlorineꢀ(Cl)ꢀcontentꢀisꢀ900ꢀppmꢀorꢀless;ꢀandꢀ(c)ꢀtheꢀtotalꢀBromineꢀ(Br)ꢀandꢀChlorineꢀ(Cl)ꢀcontentꢀisꢀ1500ꢀppmꢀorꢀless.
Specificationsꢀareꢀsubjectꢀtoꢀchangeꢀwithoutꢀnotice.
Theꢀdeviceꢀcharacteristicsꢀandꢀparametersꢀinꢀthisꢀdataꢀsheetꢀcanꢀandꢀdoꢀvaryꢀinꢀdifferentꢀapplicationsꢀandꢀactualꢀdeviceꢀperformanceꢀmayꢀvaryꢀoverꢀtime.
Usersꢀshouldꢀverifyꢀactualꢀdeviceꢀperformanceꢀinꢀtheirꢀspecificꢀapplications.