STPS20M120S
Datasheet
120 V power Schottky rectifier
K
A
A
A
K
A
TO-220AB narrow leads
K
Product status
STPS20M120S
I
F(AV)
V
RRM
Product summary
20 A
T j
(max)
V
F
(typ)
120 V
150 °C
0.63 V
K
A
K
A
I²PAK
Features
• High current capability
• Avalanche rated
• Low forward voltage drop
• High frequency operation
• ECOPACK ® 2 compliant
Applications
• Switching diode
• SMPS
• DC/DC converter
• LED lighting
• Notebook adapter
Description
This Schottky diode is suited for high frequency switch mode power supply.
Packaged in TO-220AB narrow leads and I 2 PAK, the STPS20M120S is optimized for use in notebook, game station and desktop adapters, providing in these applications a good efficiency at both low and high load.
DS8943 - Rev 3 - November 2018
For further information contact your local STMicroelectronics sales office.
www.st.com
1
STPS20M120S
Characteristics
Characteristics
Table 1. Absolute ratings (limiting values at 25 °C, unless otherwise specified, anode terminals short circuited)
Symbol
V
RRM
I
F(RMS)
I
F(AV)
I
FSM
P
ARM
T stg
T j
Repetitive peak reverse voltage
Forward rms current
Parameter
Average forward current δ = 0.5, square wave
Surge non repetitive forward current
Repetitive peak avalanche power
Storage temperature range
Maximum operating junction temperature
(1)
t t
T p p
C
= 125 °C
= 10 ms sinusoidal
= 10 µs, T j
= 125 °C
1. (dP tot
/dT j
) < (1/R th(j-a)
) condition to avoid thermal runaway for a diode on its own heatsink.
Value
120
50
20
240
1200
-65 to +175
+150
A
W
°C
°C
Unit
V
A
A
Symbol
R th(j-c)
Table 2. Thermal resistance parameter
Parameter
Junction to case
Value
1.35
Unit
°C/W
For more information, please refer to the following application note :
• AN5088 : Rectifiers thermal management, handling and mounting recommendations
Symbol
I
R
(1)
V
F
(2)
Table 3. Static electrical characteristics (anode terminals short circuited)
Parameter
Reverse leakage current
Forward voltage drop
Test conditions
T j
= 25 °C
T j
= 125 °C
T j
= 25 °C
T j
= 25 °C
T j
= 125 °C
T j
= 25 °C
T j
= 125 °C
I
I
I
V
F
F
F
R
= V
RRM
= 5 A
= 10 A
= 20 A
Min.
-
-
-
-
-
-
-
Typ.
55
20
0.47
0.52
0.63
1. Pulse test: t p
= 5 ms, δ < 2%
2. Pulse test: t p
= 380 µs, δ < 2%
To evaluate the conduction losses, use the following equation:
P = 0.54 x I
F(AV)
+ 0.0075 I
F
2
(RMS)
For more information, please refer to the following application notes related to the power losses :
• AN604: Calculation of conduction losses in a power rectifier
• AN4021: Calculation of reverse losses on a power diode
Max.
275
50
0.52
0.72
0.57
0.84
0.69
Unit
µA mA
V
DS8943 - Rev 3 page 2/12
STPS20M120S
Characteristics (curves)
1.1
Characteristics (curves)
Figure 1. Average forward power dissipation versus average forward current
24
P
F(AV)
(W)
20
δ=0.05
δ=0.1
δ=0.2
δ=0.5
δ=1.0
16
12
8
T
4
0
0 4 8 12
I
F(AV)
(A)
1 6 20
δ =tp/T
24 tp
2 8
Figure 2. Average forward current versus ambient temperature (δ = 0.5)
24
I
F(AV)
(A)
R th(j-a)
=R th(j-c)
20
16
12
8
T
4
0
0
δ =tp/T
25 tp
50
T amb
(°C)
75 100 125 150
Figure 3. Normalized avalanche power derating versus pulse duration (T j
= 125 °C)
1
P
ARM
(tp)
P
ARM
(10 µs)
0.1
0.01
0.001
1 10 100 1000
Figure 4. Relative variation of thermal impedance junction to case versus pulse duration
1.0
Zth(j-c) /Rth(j-c)
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0.0
1.E-04
Single pulse
1.E-03 tp(s)
1.E-02 1.E-01 1.E+00
DS8943 - Rev 3 page 3/12
STPS20M120S
Characteristics (curves)
Figure 5. Reverse leakage current versus reverse voltage applied (typical values)
1.E+02
I
R
(µA)
1.E+01
1.E+00
1.E-01
T j
= 150 °C
T j
= 125 °C
T j
= 100 °C
T j
= 75 °C
T j
= 50 °C
T j
= 25 °C
1.E-02
1.E-03
0 10 20 3 0 40 5 0
V
R
(V)
60 7 0 80 90 100 110 120
Figure 6. Junction capacitance versus reverse voltage applied (typical values)
1000
C(pF)
F = 1 MHz
VOSC = 30 mV
Tj = 25 °C
RMS
100
10
1 10 100
V
R
(V)
1000
Figure 7. Forward voltage drop versus forward current
1000.0
I
F
(A)
T j
= 125 °C
(maximum values)
100.0
T j
= 125 °C
(typical values)
10.0
T j
= 25 °C
(maximum values)
1.0
0.1
0.0
0.2
0.4
0 .6
0.8
1.0
1.2
1.4
V
F
(V)
1.6
DS8943 - Rev 3 page 4/12
2
STPS20M120S
Package information
Package information
In order to meet environmental requirements, ST offers these devices in different grades of ECOPACK ® packages, depending on their level of environmental compliance. ECOPACK ® specifications, grade definitions and product status are available at: www.st.com
. ECOPACK ® is an ST trademark.
DS8943 - Rev 3 page 5/12
STPS20M120S
TO-220AB narrow leads package information
2.1
•
•
•
•
TO-220AB narrow leads package information
Epoxy meets UL94, V0
Cooling method: by conduction (C)
Recommended torque value: 0.55 N·m
Maximum torque value: 0.70 N·m
E
Figure 8. TO-220AB narrow leads package outline
ØP
F
Q
H1
D
D1
L20
L30
L1 b1(x3)
J1
L
A
1 2 3 e e1 b (x3)
C
DS8943 - Rev 3 page 6/12
DS8943 - Rev 3
Ref.
H1
J1
L
L1
L20
L30
θP
Q
D1
E e e1
F
A b b1 c
D
STPS20M120S
TO-220AB narrow leads package information
Table 4. TO-220AB narrow leads package mechanical data
Dimensions
Min.
4.40
0.61
0.95
0.48
15.25
10.00
2.40
4.95
1.23
6.20
2.40
13.00
2.60
3.75
2.65
Millimeters
1.27 typ.
15.40 typ.
28.90 typ.
Max.
4.60
0.88
1.20
0.70
15.75
10.40
2.70
5.15
1.32
6.60
2.72
14.00
2.90
3.85
2.95
0.394
0.094
0.195
0.048
0.244
0.094
0.512
0.138
Inches (for reference only)
Min.
Max.
0.173
0.240
0.037
0.019
0.600
0.181
0.035
0.047
0.028
0.620
0.050 typ.
0.409
0.106
0.203
0.052
0.260
0.107
0.551
0.155
0.646 typ.
1.138 typ.
0.148
0.104
0.152
0.116
page 7/12
2.2
•
•
I²PAK package information
Epoxy meets UL 94,V0
Cooling method: by conduction (C)
Figure 9. I²PAK package outline
STPS20M120S
I²PAK package information
DS8943 - Rev 3 page 8/12
Ref.
c2
D e e1
E
L
L1
L2
A
A1 b b1 c
STPS20M120S
I²PAK package information
Table 5. I²PAK package mechanical data
Dimensions
Millimeters
Min.
1.23
8.95
2.40
4.95
10.00
4.40
2.40
0.61
1.14
0.49
13.00
3.50
1.27
Max.
1.32
9.35
2.70
5.15
10.40
4.60
2.72
0.88
1.70
0.70
14.00
3.93
1.40
Inches (for reference only)
Min.
Max.
0.048
0.352
0.094
0.195
0.394
0.173
0.094
0.024
0.044
0.019
0.512
0.138
0.050
0.052
0.368
0.106
0.203
0.409
0.181
0.107
0.035
0.067
0.028
0.551
0.155
0.055
DS8943 - Rev 3 page 9/12
3
STPS20M120S
Ordering information
Ordering information
Order code
STPS20M120STN
STPS20M120SR
Marking
PS20M120STN
PS20M120SR
Table 6. Ordering information
Package
TO-220AB narrow leads
I 2 PAK
Weight
1.90 g
1.50 g
Base qty
50
50
Delivery mode
Tube
Tube
DS8943 - Rev 3 page 10/12
STPS20M120S
Revision history
Table 7. Document revision history
Date
02-Apr-2012
Revision
1 First issue.
27-Jun-2018
29-Nov-2018
2
3
Changes
Updated Table 1. Absolute ratings (limiting values at 25 °C, unless otherwise specified, anode terminals short circuited)
and Figure 3. Normalized avalanche power derating versus pulse duration
(T j
= 125 °C) .
Updated Table 6
.
DS8943 - Rev 3 page 11/12
STPS20M120S
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DS8943 - Rev 3 page 12/12
