Features
n Shielded construction
n Inductance range: 0.68 to 330 µH
n Heating current up to 9.5A
n AEC-Q200 qualified
n RoHS compliant* and halogen free**
Applications
n Automotive systems:
- Driver assistant
- Infotainment
- Lighting
n DC/DC converters
n Power supplies
SRR1050A Series - 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
................................. -40 °C to +125 °C
(Temperature rise included)
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) ........24.7/10
9
hours
Mean Time Between Failures (MTBF)
..................................40.4 x 10
6
hours
Electrical Specications @ 25 °C General Specications
Core ..............................................Ferrite
Wire ............................Enameled copper
Terminal Finish ...................................Sn
Packaging ....... 700 pcs. per 13-inch reel
Materials
Product Dimensions
DIMENSIONS:
MM
(INCHES)
Bourns
Part Number
Inductance @
100 kHz/0.1V
SRF
(MHz)
Typ.
DCR (W)
I rms
(A)
I sat
(A)
***K-
Factor
L (µH) Tol. (%) Typ. Max.
SRR1050A-R68Y 0.68 ± 30 110 0.0045 0.0055 9.50 13.5 221
SRR1050A-1R2Y 1.2 ± 30 85 0.0058 0.007 8.30 10.5 158
SRR1050A-2R2Y 2.2 ± 30 53 0.0071 0.009 7.20 8.20 123
SRR1050A-3R3Y 3.3 ± 30 40 0.0086 0.011 6.50 7.80 100
SRR1050A-4R2Y 4.2 ± 30 29 0.0104 0.014 6.10 6.40 85
SRR1050A-6R8Y 6.8 ± 30 27 0.0151 0.019 5.40 5.40 65
SRR1050A-8R2Y 8.2 ± 30 21 0.0181 0.022 5.00 4.85 58
SRR1050A-100Y 10 ± 30 16.5 0.023 0.031 4.50 4.45 58
SRR1050A-120Y 12 ± 30 15 0.026 0.035 3.80 4.00 53
SRR1050A-150Y 15 ± 30 14 0.035 0.047 3.40 3.60 44
SRR1050A-180Y 18 ± 30 11 0.038 0.051 3.10 3.20 41
SRR1050A-220Y 22 ± 30 10.5 0.046 0.062 2.90 2.95 38
SRR1050A-270Y 27 ± 30 10 0.057 0.077 2.60 2.70 33
SRR1050A-330Y 33 ± 30 9 0.069 0.093 2.50 2.40 30
SRR1050A-390Y 39 ± 30 6.8 0.079 0.106 2.25 2.30 28
SRR1050A-470Y 47 ± 30 5.9 0.094 0.127 2.00 2.00 26
SRR1050A-560Y 56 ± 30 5.5 0.124 0.160 1.90 1.90 24
SRR1050A-680Y 68 ± 30 5 0.138 0.208 1.60 1.65 22
SRR1050A-820Y 82 ± 30 4.5 0.150 0.230 1.45 1.50 20
SRR1050A-101Y 100 ± 30 4.2 0.179 0.255 1.35 1.35 18
SRR1050A-121Y 120 ± 30 3.8 0.213 0.305 1.18 1.28 16
SRR1050A-151Y 150 ± 30 3.6 0.253 0.370 1.10 1.12 15
SRR1050A-181Y 180 ± 30 3.4 0.307 0.420 1.00 1.04 13
SRR1050A-221Y 220 ± 30 3 0.373 0.500 0.94 0.94 12
SRR1050A-271Y 270 ± 30 2.4 0.491 0.675 0.80 0.84 11
SRR1050A-331Y 330 ± 30 2 0.613 0.815 0.73 0.75 10
*RoHS COMPLIANT
& AEC APPROVED
*RoHS COMPLIANT
AEC APPROVED (Select Models)
LEAD FREE
*RoHS COMPLIANT
VERSIONS
AVAILABLE
LEAD FREE
VERSIONS ARE
RoHS COMPLIANT*
330
10.0 ± 0.3
(.394 ± .012)
10.20 ± 0.3
(.402 ± .012)
MAX.
4.80 ± 0.3
(.189 ± .012)
3.00 ± 0.3
(.118 ± .012)
7.80 ± 0.4
(.307 ± .016)
1.20 ± 0.15
(.047 ± .006)
13.00
(.512)
REF.
3.20
(.126)
7.30
(.287)
1.60
(.063)
1.60
(.063)
100
***K-Factor: To calculate core ux 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
Flux Density Bp-p (gauss)
1
10
100
0.10
100
500 KHz
300 KHz
200 KHz
100 KHz
50 KHz
10 KHz
100001000
0.01
0.001
1000
Core Loss (mW)
