Features
n Shielded construction
n Inductance range: 1 to 47 µH
n Heating current up to 5.1 A
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
SRR4818A Series - Shielded Power Inductors
Operating Temp. ......... -40 °C to +150 °C
(Temperature rise included)
Storage Temperature .. -40 °C to +150 °C
Temperature Rise
..................... 20 °C typ. at rated Irms
1
40 °C typ. at rated Irms
2
Rated Current
............ Inductance drops 35 % at Isat
Moisture Sensitivity Level
..................... 1
ESD Classication (HBM).................N/A
Electrical Specications @ 25 °C General Specications
Core
..............................................Ferrite
Wire
............................Enameled copper
Terminal Finish
...................................Sn
Packaging
......... 800 pcs. per 7-inch reel
Materials
Product Dimensions
DIMENSIONS:
MM
(INCHES)
Bourns
Part Number
Inductance @
100 kHz/0.1 V
SRF
(MHz)
Typ.
DCR (mW)
I rms
1
(A)
Typ.
I rms
2
(A)
Typ.
I sat
(A)
Typ.
L (µH) Tol. (%) Typ. Max.
SRR4818A-1R0Y 1.0 ± 30 140 19.2 25.0 4.00 5.10 3.60
SRR4818A-1R5Y 1.5 ± 30 105 25.2 35.0 3.75 4.70 3.00
SRR4818A-2R2Y 2.2 ± 30 90 33.7 45.0 2.70 3.50 2.43
SRR4818A-3R3Y 3.3 ± 30 70 42.8 55.0 2.50 3.10 2.10
SRR4818A-3R9Y 3.9 ± 30 65 54.5 70.0 2.20 2.70 1.90
SRR4818A-4R7Y 4.7 ± 30 55 59.4 80.0 2.00 2.60 1.50
SRR4818A-5R6Y 5.6 ± 30 50 74.3 90.0 1.75 2.30 1.35
SRR4818A-6R8Y 6.8 ± 30 45 82.1 100.0 1.65 2.20 1.25
SRR4818A-8R2Y 8.2 ± 30 43 97.7 130.0 1.55 1.90 1.15
SRR4818A-100M 10 ± 20 40 109.8 140.0 1.45 1.80 1.05
SRR4818A-120M 12 ± 20 37 132.2 170.0 1.30 1.60 0.95
SRR4818A-150M 15 ± 20 30 176.7 220.0 1.25 1.50 0.87
SRR4818A-180M 18 ± 20 28 214.8 280.0 1.10 1.40 0.79
SRR4818A-220M 22 ± 20 25 280.3 360.0 1.00 1.25 0.72
SRR4818A-270M 27 ± 20 22 317.6 400.0 0.90 1.15 0.63
SRR4818A-330M 33 ± 20 20 399.1 500.0 0.70 0.90 0.56
SRR4818A-390M 39 ± 20 17 439.3 540.0 0.63 0.80 0.53
SRR4818A-470M 47 ± 20 16 504.1 630.0 0.60 0.75 0.47
*RoHS COMPLIANT
& AEC APPROVED
*RoHS COMPLIANT
AEC APPROVED (Select Models)
LEAD FREE
*RoHS COMPLIANT
VERSIONS
AVAILABLE
LEAD FREE
VERSIONS ARE
RoHS COMPLIANT*
Recommended Layout
Electrical Schematic
How to Order
SRR4818A - 1R0Y
Model
Value Code (see table)
4.80 ± 0.20
(.189 ± .008)
4.80 ± 0.20
(.189 ± .008)
1.80 ± 0.20
(.071 ± .008)
1.60 ± 0.20
(.063 ± .008)
1.60 ± 0.20
(.063 ± .008)
1.60 ± 0.20
(.063 ± .008)
MARKED LINE
INDICATES
WINDING
STARTING
TERMINAL
*RoHS Directive 2015/863, Mar 31, 2015 and Annex.
**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.
4.20
(.165)
4.80 ± 0.20
(.189 ± .008)
4.80 ± 0.20
(.189 ± .008)
1.80 ± 0.20
(.071 ± .008)
1.60 ± 0.20
(.063 ± .008)
1.17
(.046)
1.60 ± 0.20
(.063 ± .008)
1.60 ± 0.20
(.063 ± .008)
1.98
(.078)
1.98
(.078)
MARKED LINE
INDICATES
WINDING
STARTING
TERMINAL
DIMENSIONS:
MM
(INCHES)
