CO
M
G E & PL I
AN
N
FR
T*
EE
**
HS
LO
Ro
n Shielded construction
n Metal alloy powder core
3R3
n High saturation current
n Low buzz noise
n Flat wire
n RoHS compliant* and halogen free**
CO
M
PL
IA
NT
HA
Features
*R
oH
S
SRP0310 Series - Shielded Power Inductors
Electrical Specifications @ 25 °C
SRP0310-R68K
SRP0310-1R0K
SRP0310-1R5K
SRP0310-2R2K
SRP0310-3R3K
SRP0310-4R7K
0.47
0.68
1.00
1.50
2.20
3.30
4.70
Tol. (%)
10
10
10
10
10
10
10
18
18
16
16
16
12
18
Product Dimensions
25.2
25.2
7.96
7.96
7.96
7.96
7.96
SRF
(MHz)
Typ.
EE
FR
Q
Test
Freq,
(MHz)
AD
L (µH)
Q
Typ.
90
70
64
56
40
32
25
DCR
(mW)
Typ.
22.5
30.5
49.0
88.0
99.5
135.0
183.0
DCR
(mW)
Max.
26.5
35.5
58.5
105.0
118.0
160.0
215.0
Irms
(A)
Typ.
5.6
4.6
3.4
2.4
2.3
2.1
1.8
Ro VER LEA
HS SI D F
CO ON RE
M SA E
PL R
IA E
NT
*
SRP0310-R47K
Inductance
@ 100 kHz / 1 V
LE
Bourns
Part Number
Additional Information
Recommended Layout
3.10 ± 0.2
(.122 ± .008)
1.30 REF.
(.051)
0.23
(.009)
1.60
(.063)
REF.
2.30
REF.
(.091)
4R7
3.70 REF.
(.146)
3.40 ± 0.2
(.134 ± .008)
DIMENSIONS:
MM
(INCHES)
Electrical Schematic
3.40
MAX.
(.134)
Isat
(A)
Typ.
7.0
6.0
5.6
4.2
2.7
2.2
2.1
Click these links for more information:
PRODUCT TECHNICAL INVENTORY SAMPLES
LIBRARY
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 Irms1
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
How to Order
1.00
MAX.
(.039)
CONTACT
SRP0310 - 4R7K
Model
Value Code (see table)
DIMENSIONS:
MM
(INCHES)
0.95 ± 0.1
(.037 ± .004)
WARNING Cancer and Reproductive Harm www.P65Warnings.ca.gov
* 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.
SRP0310 Series - Shielded Power Inductors
L vs. I Charts
SRP0310-R47K
120%
Temperature Rise (°C)
100%
L/LOA
80%
60%
40%
20%
0%
0
2.0
4.0
SRP0310-R47K
50
6.0
40
30
20
10
0
8.0
0
1.5
SRP0310-1R0K
120%
Temperature Rise (°C)
L/LOA
80%
60%
40%
20%
0%
0.8
1.6
2.4
3.2
4.0
4.8
30
20
10
0
5.6
0
0.8
Temperature Rise (°C)
L/LOA
80%
60%
40%
20%
0%
1.0
1.5
2.0
2.5
Temperature Rise (°C)
L/LOA
60%
40%
20%
0%
1.2
2.5
1.6
2.0
10
0
0.5
1.0
1.5
1.8
SRP0310-4R7K
50
80%
IDC (A)
2.0
20
IDC (A)
100%
0.6
4.0
30
0
3.0
SRP0310-4R7K
0
3.2
40
IDC (A)
120%
2.4
SRP0310-2R2K
50
100%
0.5
1.6
IDC (A)
SRP0310-2R2K
0
6.0
40
IDC (A)
120%
4.5
SRP0310-1R0K
50
100%
0
3.0
IDC (A)
IDC (A)
2.4
40
30
20
10
0
0
0.4
0.8
1.2
IDC (A)
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.
SRP0310 Series - Shielded Power Inductors
Soldering Profile
Peak Temperature: 260 °C max.
Max. Peak Temperature -5 °C: 30 sec. max.
Max. Time Above 217 °C: 60~150 sec. max.
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.
Peak Temperature: 260 °C
Temperature (°C)
250
60~150 Sec.
200
217 °C
60 Sec.
Max.
150
60~120 Sec.
100
50
0
50
100
150
200
250
Time (Seconds)
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.
SRP0310 Series - Shielded Power Inductors
Packaging Specifications
330
DIA.
(12.99)
18.4
(.724)
2.0 ± 0.5
(.079 ± .020)
COVER TAPE
21 ± 0.8
(.827 ± .031)
50
MIN.
(1.969)
13.5 ± 0.5
DIA.
(.531 ± .020)
14
MAX.
(.551)
8
(.315)
END
COMPONENTS
4R7
4R7
LEADER
NO COMPONENT
360
(14.173)
MIN.
4
(.157)
4R7
4R7
12
(.472)
EMBOSSED CARRIER
TRAILER
NO COMPONENT
960
(37.795)
MIN.
USER DIRECTION OF FEED
QTY: 4,000 PCS PER REEL
DIMENSIONS:
MM
(INCHES)
Asia-Pacific: Tel: +886-2 2562-4117 • Email: asiacus@bourns.com
EMEA: Tel: +36 88 885 877 • Email: eurocus@bourns.com
The Americas: Tel: +1-951 781-5500 • Email: americus@bourns.com
www.bourns.com
REV. 04/21
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.
Legal Disclaimer Notice
This legal disclaimer applies to purchasers and users of Bourns® products manufactured by or on behalf of Bourns, Inc. and
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Unless otherwise expressly indicated in writing, Bourns® products and data sheets relating thereto are subject to change
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