Datasheet

SRP0312 Series - Shielded Power Inductors
3R3
Features
■ Shielded construction
■ Metal alloy powder core
■ High saturation current
■ Low buzz noise
■ Flat wire
■ RoHS compliant* and halogen free**
Electrical Specifications @ 25 °C
Bourns
Part Number
Inductance
@ 100 kHz / 1 V
Q
Typ.
Q
Test Freq,
(MHz)
SRF
(MHz)
Typ.
DCR
(mΩ)
Typ.
DCR
(mΩ)
Max.
Irms
(A)
Typ.
Isat
(A)
Typ.
L (μH) Tol. (%)
SRP0312-R47K 0.47 10 18 25.2 91 15.3 17.8 6.6 8.0
SRP0312-R68K 0.68 10 14 25.2 77 21.2 24.8 5.6 6.0
SRP0312-1R0K 1.00 10 23 7.96 59 29.0 34.0 4.7 5.0
SRP0312-1R5K 1.50 10 28 7.96 45 49.0 58.0 3.6 4.3
SRP0312-2R2K 2.20 10 28 7.96 38 63.5 74.0 3.1 3.7
SRP0312-3R3K 3.30 10 22 7.96 36 110.0 129.0 2.4 3.0
SRP0312-4R7K 4.70 10 22 7.96 29 175.0 210.0 1.9 2.5
Product Dimensions
4R7
3.40 ± 0.2
(.134 ± .008)
0.95 ± 0.1
(.037 ± .004)
3.40
(.134)
MAX.
1.20
(.047)
MAX.
1.60
(.063)
REF.
3.10 ± 0.2
(.122 ± .008)
General Specifications
Operating Temperature
................................-40 °C to +125 °C
(Temperature rise included)
Storage Temperature (Component)
................................-40 °C to +125 °C
Rated Current
............ Inductance drops 30 % at Isat
Temperature Rise ... 40 °C at rated Irms
1
Rated Voltage ..................................50 V
Moisture Sensitivity Level .....................1
ESD Classification (HBM).................N/A
Note 1: Circuit design, component, PCB trace size
and thickness, airflow and other cooling provisions all
affect the part temperature. Part temperature should be
verified in the end application.
Materials
Core ..........................Metal alloy powder
Wire ............................Enameled copper
Terminal Finish ...................................Sn
Packaging ..... 4000 pcs. per 13-inch reel
Please consult Bourns
®
Model SRP-A
Series Visual Inspection Guide for detailed
construction, processing and testing
information.
Recommended Layout
RoHS COMPLIANT*
&
HALOGEN FREE**
1.80
(.071)
REF.
REF.
3.70
(.146)
REF.
1.50
(.059)
Electrical Schematic
How to Order
SRP0312 - 4R7K
Model
Value Code (see table)
* 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. Users should verify actual device performance in their specific
applications. The products described herein and this document are subject to specific legal disclaimers as set forth on the
last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf.
WARNING Cancer and Reproductive Harm www.P65Warnings.ca.gov
DIMENSIONS:
MM
(INCHES)