OM
PL
IA
N
Features
n
Shielded construction
n
Flat wire
n
Unit height of 2 mm
*R
oH
S
This series is currently available but
not recommended for new designs.
The newer
Model SRP4020TA
series is recommended.
C
T
R6
8
n
Inductance range: 0.22 to 5.6 μH
n
Rated current up to 10 A
n
RoHS compliant*
LE
AD
F
RE
E
Electrical Specifications
Bourns Part No.
SRP4020 Series - Shielded Power Inductors
General Specifications
Test Voltage ..................................0.25 V
Test Frequency ......................... 100 KHz
Reflow Soldering
.. 230 °C; 50 sec. max.
Operating Temperature
................................-55 °C to +125 °C
(Temperature rise included)
Storage Temperature
................................-55 °C to +125 °C
Resistance to Soldering Heat
............................. +260 °C for 10 sec.
Materials
Core ..................................................Iron
Wire
............................Enameled
copper
Terminal
........................................Cu/Sn
Rated Current
.....Ind.
drops 20 % at Isat
Temperature Rise
.....40
°C at rated Irms
Packaging
.....
2000 pcs. per 13-inch reel
Product Dimensions
275
225
175
125
<1> 5 seconds maximum
at +245 °C
4.8
MAX.
(.189)
<1> 245 °C
SRP4020-R22M
SRP4020-R36M
SRP4020-R47M
SRP4020-R56M
0.22
Ro VE LEA
HS RS D
C ION FRE
OM S E
PL AR
IA E
NT
*
Inductance
L (μH)
±20 %
0.36
0.47
0.68
0.88
1.2
1.5
2.2
4.7
3.3
1.0
0.56
I rms
(A)
11.5
9
7
6.3
6
5
7
I sat
(A)
11.5
10
7
6
8
11
4.8
MAX.
(.189)
DCR
(mΩ) Max.
12
14.7
4.0 ± 0.2
18
(.157 ± .008)
7
12
SRP4020-R68M
SRP4020-R88M
SRP4020-1R2M
SRP4020-1R5M
SRP4020-2R2M
SRP4020-4R7M
SRP4020-3R3M
SRP4020-1R0M
6.5
5
5
17
5.1
3.9
2.7
3.3
5
21.6
22
29
48
40
4.0 ± 0.2
5
(.157 ± .008)
4.3
4
SRP4020-5R6M
5.6
2.4
3.5
(0.0 - .012)
90
75
- 0.3
0.0
Soldering Profile
275
225
175
125
75
25
4.5
(.177)
1.5
(.060)
<1> Maximum of 10 seconds
between +255 °C and +260 °C
<1> 255 °C
220 °C
60 seconds
maximum
2.0
MAX.
(.079)
260 °C peak
Temperature (°C)
Temperature (°C)
190°C
150 °C
Ramp Down
5 °C/second
170 °C
150 °C
120 -150 seconds
183 °C
4.0 ± 0.2
60 seconds
± .008)
(.157
maximum
120-150 seconds
2.5
(.099)
Ramp Up
4 °C/second maximum
50
100
Ramp Down
5 °C/second
10 seconds minimum
0.6 ± 0.3
(.024
75
.012)
±
0.8
25
0.3
±
0
(.031 ± .012)
10 seconds minimum
Ramp Up
4.0
4 °C/second maximum
± 0.2
(.157 ± .008)
50
100
150
200
0.0 - 0.3
(0.0 - .012)
0
150
200
250
300
250
300
Time (Seconds)
Time (Seconds)
Electrical Schematic
Recommended Layout
2.2
(.087)
1.5
(.059)
2.0
MAX.
(.079)
6.0
(.236)
0.6 ± 0.3
(.024 ± .012)
0.8 ± 0.3
(.031 ± .012)
DIMENSIONS:
*RoHS Directive 2002/95/EC Jan. 27, 2003 including annex and RoHS Recast 2011/65/EU June 8, 2011.
2.2
Specifications are subject to change without notice.
(.087)
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.
MM
(INCHES)
1.5
(.059)
6.0
Applications
n
DC/DC converters
n
Power supplies for:
• Portable communications equipment
• Laptop computers
• Camcorders, HDTV, car audio
systems
• Video game consoles
SRP4020 Series - Shielded Power Inductors
L vs. I Charts
0.24
0.23
0.22
SRP4020-R22M
100
Temperature Rise (°C)
Inductance ( H)
0.21
0.20
0.19
0.18
0.17
0.16
0.15
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
70
60
50
40
30
20
10
0
0.32
0.31
0.30
0.29
0.28
0.27
0.26
0.25
0
1
2
3
4
5
6
7
8
9
10
10
0
20
30
DC Bias (A)
0.50
0.45
DC Bias (A)
60
0.60
SRP4020-R47M
SRP4020-R56M
80
60
Temperature Rise (°C)
0.40
0.35
0.30
0.25
0
1
2
3
4
5
6
7
8
9
10
40
30
20
10
0
0.50
0.45
0.40
0.35
0.30
0
1
2
3
4
5
6
7
8
9
50
40
30
20
10
0
10
DC Bias (A)
0.80
0.70
DC Bias (A)
50
0.90
0.85
SRP4020-R68M
SRP4020-R88M
45
40
30
25
20
15
10
5
0
35
Temperature Rise (°C)
Inductance ( H)
0.80
0.60
0.50
0.40
0.30
0
0.5
1
1.5
2
2.5 3
3.5
4
4.5
5
5.5
6
6.5
7
7.5
8
30
20
10
0
0.75
0.70
0.65
0.60
0.55
0.50
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
5.5
6
6.5
7
DC Bias (A)
1.10
1.00
DC Bias (A)
80
70
60
1.20
SRP4020-1R0M
SRP4020-1R2M
60
50
40
30
20
10
0
Temperature Rise (°C)
1.10
1.00
Inductance ( H)
0.90
0.80
0.70
0.60
0.50
0
1
2
3
4
5
6
7
8
Inductance ( H)
50
40
30
20
10
0
0.90
0.80
0.70
0.60
0.50
0
1
2
3
4
5
6
7
8
DC Bias (A)
DC Bias (A)
2.00
1.70
SRP4020-1R5M
Temperature Rise (°C)
Inductance ( H)
2.20
Inductance ( H)
1.40
1.10
0.80
Specifications are subject to change without notice.
20
1.80
The device characteristics and parameters in this data sheet can and do vary in different applications and actual device performance may vary over time.
30
1.70
Users should verify actual device performance in their specific applications.
20
10
10
1.60
60
50
40
2.10
2.00
1.90
40
30
Temperature Rise (°C)
110
100
90
80
70
2.50
2.40
2.30
SRP4020-2R2M
60
50
Temperature Rise (°C)
Temperature Rise (°C)
40
Inductance ( H)
Temperature Rise (°C)
50
0.55
70
Inductance ( H)
Inductance ( H)
Temperature Rise (°C)
Inductance ( H)
90
80
0.35
0.34
0.33
SRP4020-R36M
50
40
Inductance (
Temperature Ri
Inductance (
0.70
0.65
0.60
0.55
0.50
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
5.5
6
6.5
7
0.50
0.40
0.30
0
0.5
1
1.5
2
2.5 3
3.5
4
4.5
5
5.5
6
6.5
7
7.5
8
20
10
0
20
15
10
5
0
DC Bias (A)
1.10
1.00
DC Bias (A)
80
70
60
1.20
SRP4020-1R0M
SRP4020-1R2M
60
50
40
30
20
10
0
Temperature Rise (°C)
1.10
1.00
Inductance ( H)
0.90
0.80
0.70
0.60
0.50
Inductance ( H)
50
40
30
20
10
0
0
1
2
3
4
5
6
7
8
0.90
0.80
0.70
0.60
0.50
0
1
2
3
4
5
6
7
8
3312 - 2 mm SMD Trimming Potentiometer
SRP4020 Series - Shielded Power Inductors
DC Bias (A)
DC Bias (A)
L vs. I Charts
2.00
1.70
SRP4020-1R5M
Temperature Rise (°C)
Inductance ( H)
2.20
Inductance ( H)
1.40
1.10
0.80
0.50
0
1
2
3
4
5
6
7
60
50
40
30
20
10
0
2.10
2.00
1.90
1.80
1.70
1.60
1.50
0
1
2
3
4
5
6
40
30
20
10
0
DC Bias (A)
DC Bias (A)
60
4.7
4.6
4.5
4.4
4.3
4.2
4.1
4.0
3.9
3.8
3.7
3.6
3.5
0
0.5
1
1.5
2.50
2.30
2.20
SRP4020-3R3M
SRP4020-4R7M
Temperature Rise (°C)
100
70
60
50
40
30
20
10
0
110
100
90
80
70
2.50
2.40
2.30
SRP4020-2R2M
60
50
30
Inductance ( H)
2.00
1.90
1.80
1.70
1.60
1.50
0
0.5
1
1.5
2
2.5
3
3.5
4
20
10
0
Inductance ( H)
2.10
Temperature Rise (°C)
2
2.5
3
3.5
4
4.5
5
DC Bias (A)
DC Bias (A)
5.6
5.4
SRP4020-5R6M
100
90
70
60
50
40
30
20
10
0
Inductance ( H)
5.2
5.0
4.8
4.6
4.4
4.2
0
0.5
1
1.5
2
2.5
3
3.5
4
DC Bias (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)
80
Temperature Rise (°C)
90
80
Temperature Rise (°C)
Temperature Ri
0.60
30
0.75
25
SRP4020 Series - Shielded Power Inductors
Packaging Specifications
(.079 ± .020)
2.0 ± 0.5
(.079 ± .020)
2.0 ± 0.5
2.0 ± 0.2
(.079 ± .008)
2.0 ± 0.2
(.079 ± .008)
165 ~ 180 °
TOP COVER TAPE
DIA.
13.0 ± 1.0
(.512 ± .039)
DIA.
13.0 ± 1.0
(.512 ± .039)
DIA.
20.0 ± 0.5
(.787 ± .020)
DIA.
20.0 ± 0.5
(.787 ± .020)
100.0 ± 1.0
(3.937 ± .039)
DIA.
100.0 ± 1.0
330.0 ± 2.0
(3.937 ± .039)
(12.992 ± .079)
DIA.
DIA.
330.0 ± 2.0
(12.992 ± .079)
DIA.
16.0 ± 0.5
(0.63 ± 0.020)
TOP COVER TAPE
165 ~ 180 °
0.3 ~ 1.5 N
0.3 ~ 1.5 N
CARRIER TAPE
PEEL SPEED: APPROX. 300 MM / MINUTE
PEEL FORCE: 0.3 TO 1.5 N
CARRIER TAPE
PEEL SPEED: APPROX. 300 MM / MINUTE
PEEL FORCE: 0.3 TO 1.5 N
DIMENSIONS:
MM
(INCHES)
12.6 ± 0.3
(0.50 ± 0.012)
4.0 ± 0.1
(.157 ± .004)
2.0 ± 0.1
(.079 ± .004)
1.50 +0.1/-0.0
DIA.
(.059 +.004/-.000)
1.75 ± 0.1
(.069 ± .004)
5.5 ± 0.1
(.217 ± .004)
R22
5.05
(.199)
4.6 ± 0.1
(.181 ± .004)
5°
12.0 ± 0.3
(.472 ± .012)
8.0 ± 0.1
(.315 ± .004)
0.40 ± 0.05
(.016 ± .002)
4.3 ± 0.1
(.169 ± .004)
1.50
MIN. DIA.
(.059)
4.76
(.187)
2.65 ± 0.1
(.104 ± .004)
USER DIRECTION OF FEED
QTY: 2000 PCS. PER REEL
REV. 01/17
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.
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