Features
C- *R
Q2 o
00 HS
CO an
M d
PL
IA
NT
■ Shielded construction
■ Carbonyl powder core
■ High saturation current
AE
■ Inductance range: 0.10 to 10 µH
■ AEC-Q200 compliant
■ RoHS compliant* and halogen free**
SRP1238A Series - Shielded Power Inductors
Electrical Specifications @ 25 °C
General Specifications
Bourns
Part Number
Inductance
@ 100 KHz Q (Min.)
SRF
/1V
@100 KHz (MHz)
/1V
Typ.
L
Tol.
(μH) (%)
DCR
(mΩ)
Typ.
DCR
(mΩ)
Max.
Irms
(A)
Isat
(A)
SRP1238A-R10Y
SRP1238A-R15Y
SRP1238A-R22M
SRP1238A-R33M
SRP1238A-R47M
SRP1238A-R60M
SRP1238A-R68M
SRP1238A-R82M
SRP1238A-1R0M
SRP1238A-1R2M
SRP1238A-1R5M
SRP1238A-1R8M
SRP1238A-2R2M
SRP1238A-3R3M
SRP1238A-4R7M
SRP1238A-5R6M
SRP1238A-6R8M
SRP1238A-8R2M
SRP1238A-100M
0.10
0.15
0.22
0.33
0.47
0.60
0.68
0.82
1.0
1.2
1.5
1.8
2.2
3.3
4.7
5.6
6.8
8.2
10
0.36
0.4
0.7
0.85
1.2
1.5
1.9
2.2
2.7
4
4.8
5.2
6.3
11
15.3
18
20
23
29
0.43
0.48
0.81
1.0
1.8
2.2
2.5
3.0
3.5
4.0
5.5
7.0
8.0
13.5
18.5
22.0
24.0
28.0
34.0
43
41
38.5
36.5
32
29
28
25
24
21
19
17
16
12
10
9.5
9
8.5
7
84
75
65
62
55
51
49
44
40
37
35
30
29
27
24
19
18
16
14
± 30
± 30
± 20
± 20
± 20
± 20
± 20
± 20
± 20
± 20
± 20
± 20
± 20
± 20
± 20
± 20
± 20
± 20
± 20
10
10
10
10
10
15
15
15
15
20
20
20
20
20
20
20
20
20
20
175
140
125
85
80
53
50
45
40
35
30
27
25
20
15
15
13
12
11
Terminal
Type
NonLead
Frame
Test Voltage ....................................1.0 V
Test Frequency ......................... 100 KHz
Operating Temperature
................................-55 °C to +150 °C
(Temperature rise included)
Storage Temperature
................................-55 °C to +150 °C
Rated Current
............ Inductance drops 20 % at Isat
Temperature Rise .....40 °C at rated Irms
Moisture Sensitivity Level ..................... 1
ESD Classification (HBM)................. N/A
1 Circuit design, component, PCB trace
Lead
Frame
size and thickness, airflow and other
cooling provisions all affect the part
temperature. Part temperature should be
verified in the end application.
Materials
Core .............................Carbonyl powder
Wire ............................Enameled copper
Terminal Finish ...................................Sn
Packaging ....... 500 pcs. per 13-inch reel
How to Order
Product Dimensions
SRP1238A - 100M
Non-Lead Frame Terminal
Lead Frame Terminal
13.5 ± 0.5
(.531 ± .020)
13.5 ± 0.5
(.531 ± .020)
R15
1510
3R3
1510
Model
Value Code (see table)
Recommended Layout
12.5 ± 0.3
(.492 ± .012)
12.5 ± 0.3
(.492 ± .012)
3.3 ± 0.2
(.130 + .008)
5.0
(.197)
3.3 ± 0.2
(.130 + .008)
8.0
(.315)
2.75 ± 0.35
(.108 ± .014)
2.75 ± 0.35
(.108 ± .014)
2.3 ± 0.3
(.091 ± .012)
2.0
(.079)
REF.
2.3 ± 0.3
(.091 ± .012)
DIMENSIONS:
MM
(INCHES)
WARNING
Cancer and Reproductive Harm
www.P65Warnings.ca.gov
2.0
(.079)
REF.
GRADUATED
LINE
GRADUATED
LINE
4.7 ± 0.3
(.185 ± .012)
14.2
(.559)
4.7 ± 0.3
(.185 ± .012)
DIMENSIONS:
MM
(INCHES)
Please consult Bourns® Model SRP-A
Series Visual Inspection Guide for detailed
construction, processing and testing
information.
* 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.
SRP1238A Series - Shielded Power Inductors
L vs. I Charts
0
0
DC Current (A)
30
0
62
0
46.5
90
0.4
60
0.2
30
0
0
11
0
42
35
0
49
60
0.6
30
0.3
0
104
2.0
78
1.0
52
0.5
26
0
14.8
22.2
29.6
90
60
1.0
30
0.5
7
60
1
30
0
21.75
0
29
14
28
21
20.4
10.2
SRP1238A-1R0M
3
60
2
30
1
0
10.8
16.2
DC Current (A)
Temperature Rise (°C)
120
90
60
0.6
30
0.3
16
8
32
24
SRP1238A-1R8M
3.0
0
40
100
2.4
80
1.8
60
1.2
40
0.6
20
0
0
10
5
15
20
25
0
30
21.6
0
27
SRP1238A-4R7M
10
120
90
4
5.4
0
51
0.9
0
0
35
5
0
40.8
30.6
DC Current (A)
SRP1238A-3R3M
6
Inductance (μH)
90
2
DC Current (A)
30
DC Current (A)
Temperature Rise (°C)
Inductance (μH)
120
3
14.5
60
0
120
1.5
0
150
7.25
0.4
0.2
DC Current (A)
0
0
37
SRP1238A-2R2M
0
90
44
33
SRP1238A-1R5M
DC Current (A)
4
22
Inductance (μH)
2.5
Inductance (μH)
1.5
7.4
0.6
1.2
0
130
Temperature Rise (°C)
Inductance (μH)
2.0
0
120
1.5
Inductance (μH)
90
11
150
0.8
DC Current (A)
SRP1238A-1R2M
2.5
SRP1238A-R60M
0
120
0.9
0
0
65
DC Current (A)
SRP1238A-R82M
DC Current (A)
52
39
0
Inductance (μH)
28
0
55
Temperature Rise (°C)
30
0.3
21
44
1.2
Inductance (μH)
60
0.6
Temperature Rise (°C)
Inductance (μH)
90
0.9
14
33
22
1.5
120
1.2
7
26
13
DC Current (A)
SRP1238A-R68M
0
30
1.0
120
0.6
DC Current (A)
1.5
0.1
DC Current (A)
Inductance (μH)
0.2
31
60
0
Temperature Rise (°C)
60
Inductance (μH)
0.4
Temperature Rise (°C)
Inductance (μH)
90
15.5
0.2
0
0
75
SRP1238A-R47M
0.8
120
0.6
0
60
45
90
DC Current (A)
SRP1238A-R33M
0.8
30
15
0.3
Temperature Rise (°C)
67.2
50.4
40
0.1
Temperature Rise (°C)
33.6
16.8
60
Temperature Rise (°C)
0
0.2
20
0
84
0
80
Temperature Rise (°C)
30
100
Temperature Rise (°C)
0.05
120
150
8
120
6
90
4
60
2
30
0
0
6
12
18
Temperature Rise (°C)
60
0.3
Inductance (μH)
0.1
SRP1238A-R22M
0.4
140
120
Inductance (μH)
90
Temperature Rise (°C)
Inductance (μH)
0.15
SRP1238A-R15Y
0.4
120
Temperature Rise (°C)
SRP1238A-R10Y
0.2
0
24
DC Current (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.
SRP1238A Series - Shielded Power Inductors
L vs. I Charts (Continued)
0
0
7.6
3.8
11.4
15.2
0
19
60
4
30
2
0
0
3
DC Current (A)
9
12
DC Current (A)
15
0
18
9
90
6
60
3
30
0
0
4
8
12
0
16
DC Current (A)
SRP1238A-100M
15
90
9
60
6
30
3
0
0
7
3.5
10.5
Temperature Rise (°C)
120
12
Inductance (μH)
6
120
Temperature Rise (°C)
30
2
90
6
Inductance (μH)
60
4
8
SRP1238A-8R2M
12
120
Temperature Rise (°C)
90
6
Inductance (μH)
Inductance (μH)
8
SRP1238A-6R8M
10
120
Temperature Rise (°C)
SRP1238A-5R6M
10
0
14
DC Current (A)
Electrical Schematic
Soldering Profile
PRE-HEATING
SOLDERING
NATURAL
COOLING
TP (260 °C / 10 seconds max.)
Temperature (°C)
tp (245 °C / 20~40 seconds)
217
200
60 ~ 150 seconds
150
60 ~ 180 seconds
25
480 seconds max.
Time (Seconds)
REFLOW TIMES: 3 MAX.
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.
SRP1238A Series - Shielded Power Inductors
Packaging Specifications
330
DIA.
(12.99)
2.0 ± 0.5
(.079 ± .020)
13.5 ± 0.5
(.531 ± .020)
DIA.
100.0 ± 2.0
(3.937 ± .079)
13.5 ± 0.5
DIA.
(.531 ± .020)
24.0 ± 0.5
(.945 ± .020)
1.75
(.069)
2.0
(.079)
0.35 ± 0.05
(.014 ± .002)
1.5 ± 0.1
DIA.
(.059 ± .004)
3°
16.0 ± 0.1
(.630 ± .004)
4.0 ± 0.1
(.157 ± .004)
14.2 ± 0.1
(.559 ± .004)
7.0 ± 0.1
(.276 ± .004)
13.0 ± 0.1
(.512 ± .004)
USER DIRECTION OF FEED
QTY: 500 PCS. PER REEL
DIMENSIONS:
13.0 ± 0.1
(.512 ± .004)
Marking
Date Code
Marking
Date Code
Marking
Date Code
Marking
Date Code
Marking
24.0 ± 0.3
(.945 ± .012)
4.0
(.157)
Date Code
11.5 ± 0.1
(.453 ± .004)
24
(.945)
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. 11/19
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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