Ro VE LEA
HS RS D
C ION FRE
OM S
PL AR
IA E
NT
*
*R
& oHS
AE C
C OM
AP P
PR LI
OV AN
ED T
Features
n
Shielded construction
n
Carbonyl powder core
n
High saturation current
n
Inductance range: 0.10 to 33 µH
n
AEC-Q200 qualified
n
RoHS compliant* and halogen free**
Applications
n
Automotive systems:
- Driver assistant
AE
C *
AP Ro
PR HS
OV C
ED OM
(S PL
el IAN
ec T
t M
od
el
s)
1R0250
1
- Information
- Entertainment
- Lighting
n
DC/DC converters
n
Power supplies
Electrical Specifications @ 25 °C
Inductance
@ 100 KHz
/1V
L
Tol.
(µH)
(%)
SRP7028A Series - Shielded Power Inductors
General Specifications
Test Voltage ....................................1.0 V
Test Frequency ......................... 100 KHz
Operating Temperature
................................-40 °C to +150 °C
(Temperature rise included)
Storage Temperature .. -40 °C to +125 °C
Rated Current
............ Inductance drops 20 % at Isat
Temperature Rise .....40 °C at rated Irms
Resistance to Soldering Heat
........................ +260 °C, 40 sec. max.
Moisture Sensitivity Level .....................1
ESD Classification (HBM).................N/A
1
Circuit design, component, PCB trace
Lead
Frame
Bourns
Part Number
SRP7028A-R10M
SRP7028A-R15Y
SRP7028A-R22Y
SRP7028A-R33M
SRP7028A-R47M
SRP7028A-R56M
SRP7028A-R68M
SRP7028A-R75M
SRP7028A-R82M
SRP7028A-1R0M
SRP7028A-1R5M
SRP7028A-1R8M
SRP7028A-2R2M
SRP7028A-2R5M
SRP7028A-3R3M
SRP7028A-4R7M
SRP7028A-5R6M
SRP7028A-6R8M
SRP7028A-8R2M
SRP7028A-100M
SRP7028A-150M
SRP7028A-220M
SRP7028A-330M
0.10
0.15
0.22
0.33
0.47
0.56
0.68
0.75
0.82
1.0
1.5
1.8
2.2
2.5
3.3
4.7
5.6
6.8
8.2
10
15
22
33
± 20
± 30
± 30
± 20
± 20
± 20
± 20
± 20
± 20
± 20
± 20
± 20
± 20
± 20
± 20
± 20
± 20
± 20
± 20
± 20
± 20
± 20
± 20
Q (Min.)
@100
KHz / 1 V
5
5
5
10
10
15
15
15
15
20
20
20
20
20
20
20
20
20
20
20
20
20
20
SRF
(MHz)
Typ.
300
220
150
140
80
70
67
65
61
58
38
36
32
30
25
21
19
18
17
14
12
10
8
DCR
(mW)
Typ.
1.2
1.5
2.1
3.5
4
4.7
4.8
5.5
6.7
8.3
13
14
18
20
28
37
43
54
64
75
107
165
200
1.7
1.9
2.8
3.9
4.2
5.0
5.5
6.6
8.0
10.0
15.0
17.0
20.0
22.0
30.0
40.0
48.0
60.0
68.0
85.0
123.0
190.0
240.0
DCR
(mW)
Max.
Irms
(A)
32.5
27
23
20
17.5
16.5
15.5
14.5
13
11
9
8.5
8
7
6
5.5
5
4.5
4
3.5
3.0
2.0
2.0
60
45
40
32
26
25.5
25
24.5
24
22
18
16
14
13
12
10
9
8
7.5
6
4
3.5
2.5
Isat
(A)
Terminal
Type
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 ..... 1000 pcs. per 13-inch reel
Product Dimensions
Lead Frame Terminal
7.3 ± 0.3
(.287 ± .012)
How to Order
SRP7028A - 100M
Model
Value Code (see table)
Please consult
Bourns
®
Model SRP-A
Series Visual Inspection Guide
for detailed
construction, processing and testing
information.
6.6 ± 0.3
(.260 ± .012)
Soldering Profile
PRE-HEATING
SOLDERING
TP (260 °C / 10 seconds max.)
tp (245 °C / 20~40 seconds)
2R2
1150
2.8 ± 0.2
(.110 + .008)
NATURAL
COOLING
1.8 ± 0.3
(.071 ± .012)
Temperature (°C)
217
200
150
60 ~ 180 seconds
60 ~ 150 seconds
3.0 ± 0.3
(.118 ± .012)
25
480 seconds max.
Recommended Layout
Time (Seconds)
8.4
(.331)
REFLOW TIMES: 3 MAX.
* 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.
3.5
(.138)
2.5
(.098)
MM
DIMENSIONS:
(INCHES)
90
Temperature Rise (°C)
Temperature Rise (°C)
Inductance ( H)
Inductance ( H)
60
1.0
50
40
0.5
0
30
20
10
0
22
1.8
1.2
0.6
0
Inductance ( H)
70
60
50
40
30
20
10
0
18
1.8
1.2
0.6
0
90
60
30
0
16
0
5.5
11
16.5
DC Current (A)
0
4.5
9
13.5
0
4
8
12
DC Current (A)
100
90
DC Current (A)
4
SRP7028A-2R2M
5
SRP7028A-2R5M
100
90
6.0
SRP7028A-3R3M
Temperature Rise (°C)
Inductance ( H)
Inductance ( H)
60
2
50
40
30
20
3
2
60
50
40
30
20
10
0
13
Inductance ( H)
70
4.5
70
60
50
40
30
20
10
0
13.5
3.0
SRP7028A Series - Shielded Power Inductors
SRF0504 Series - Line Filter
1
1
0
0
3.5
7
10.5
10
0
14
0
0
3.25
6.5
9.75
1.5
0
L vs. I Charts (Continued)
DC Current (A)
8
DC Current (A)
0
3.375
6.75
10.125
DC Current (A)
SRP7028A-4R7M
100
90
10
SRP7028A-5R6M
100
90
16
SRP7028A-6R8M
Temperature Rise (°C)
Temperature Rise (°C)
Inductance ( H)
60
4
50
40
2
0
30
20
10
0
10
Inductance ( H)
70
6
4
2
0
60
50
40
30
20
10
0
10
Inductance ( H)
6
70
12
8
70
60
50
40
30
20
10
0
8
4
0
0
2
4
6
8
DC Current (A)
0
2
4
8
0
2
4
6
DC Current (A)
100
90
DC Current (A)
16
SRP7028A-8R2M
20
SRP7028A-100M
Inductance ( H)
Inductance ( H)
60
8
50
40
4
0
30
20
10
0
7.5
Inductance ( H)
70
60
50
40
30
20
10
0
6
14.4
9.6
4.8
0
10
21
14
7
0
4
5
0
0
1.875
3.75
5.625
DC Current (A)
0
1.5
3
4.5
DC Current (A)
100
90
0
0.8
1.6
2.4
3.2
DC Current (A)
50
40
SRP7028A-220M
60
SRP7028A-330M
Inductance ( H)
60
20
50
40
30
20
10
0
4
Inductance ( H)
70
45
30
30
20
15
10
0
2.5
10
0
0
1
2
3
0
DC Current (A)
0
0.5
1
1.5
2
DC Current (A)
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.
Temperature Rise (°C)
30
Temperature Rise (°C)
80
40
Electrical Schematic
Temperature Rise (°C)
70
15
Temperature Rise (°C)
12
Temperature Rise (°C)
80
100
90
80
24
19.2
SRP7028A-150M
35
28
Temperature Rise (°C)
80
100
90
80
8
80
Temperature Rise (°C)
3
Temperature Rise (°C)
80
100
90
80
4
80
70
Temperature Rise (°C)
1.5
80
90
2.4
80
70
2.4
120
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