STPS20M60S
Power Schottky rectifier
Features
■ High current capability
■ Avalanche rated
■ Low forward voltage drop
■ High frequency operation
Description
The STPS20M60S is a single Schottky diode,
suited for high frequency switch mode power
supply.
Packaged in TO-220AB, I
device is intended to be used in notebook, game
station and desktop adapters, providing in these
aplications a good efficiency at both low and high
load.
Table 1. Device summary
Symbol Value
I
F(AV)
V
RRM
(typ) 0.365 V
V
F
(max) 150 °C
T
j
2
PAK and D2PAK, this
20 A
60 V
A
K
A
K
K
A
K
A
2
PAK
I
STPS20M60SR
K
STPS20M60SG-TR
A
2
PAK
D
A
K
TO-220AB
STPS20M60ST
Figure 1. Electrical characteristics
2 x I
O
I
"Forward"
X
V
I
A
A
(a)
I
F
I
V
RRM
V
V
a. V
ARM
operating area defined in Figure 12. V
pulse measurements (t
are static characteristics
AR
and I
R
"Reverse"
must respect the reverse safe
ARM
O
< 1 µs). VR, IR, V
p
I
R
V
To
I
AR
V
F(Io)
X
V
V
F(2xIo)
F
and IAR are
AR
and VF,
RRM
V
October 2011 Doc ID 019045 Rev 1 1/9
www.st.com
9
Characteristics STPS20M60S
1 Characteristics
Table 2. Absolute ratings (limiting values with terminals 1 and 3 short circuited at
T
= 25 °C, unless otherwise specified)
amb
Symbol Parameter Value Unit
V
I
F(RMS)
I
F(AV)
I
P
ARM
V
ARM
V
ASM
T
1. For temperature or pulse time duration deratings, please refer to Figure 4 and 5. More details regarding the
2. See Figure 12
3. condition to avoid thermal runaway for a diode on its own heatsink
Table 3. Thermal resistance
Repetitive peak reverse voltage 60 V
RRM
Forward rms current 90 A
Average forward current, δ = 0.5 Tc = 135 °C Per package 20 A
Surge non repetitive forward current tp = 10 ms sine-wave 600 A
FSM
(1)
Repetitive peak avalanche power Tj = 25 °C, tp = 1 µs 26400 W
Maximum repetitive peak
(2)
avalanche voltage
Maximum single-pulse
(2)
peak avalanche voltage
Storage temperature range -65 to +175 °C
stg
Maximum operating junction temperature
T
j
avalanche energy measurements and diode validation in the avalanche are provided in the application
notes AN1768 and AN2025.
<
Rth(j-a)
1
dPtot
dTj
t
< 1 µs, Tj < 150 °C, IAR < 99 A 80 V
p
< 1 µs, Tj < 150 °C, IAR < 99 A 80 V
t
p
(3)
150 °C
Symbol Parameter Value Unit
th(j-c)
Junction to case 1.0 °C/W
R
Table 4. Static electrical characteristics (terminals 1 and 3 short circuited)
Symbol Parameter Test conditions Min. Typ. Max. Unit
T
Reverse leakage
(1)
I
R
current
(2)
V
1. Pulse test: tp = 5 ms, δ < 2 %
2. Pulse test: tp = 380 µs, δ < 2 %
Forward voltage drop
F
= 25 °C
j
= 125 °C - 20 75 mA
T
j
Tj = 25 °C
= 125 °C - 0.365 0.405
T
j
= 25 °C
T
j
= 125 °C - 0.450 0.505
T
j
V
= V
R
I
= 10 A
F
I
= 20 A
F
RRM
- 30 125 µA
- 0.465 0.500
- 0.520 0.565
V
To evaluate the conduction losses use the following equation:
P = 0.380 x I
2/9 Doc ID 019045 Rev 1
+ 0.0063 x I
F(AV)
F2(RMS)
STPS20M60S Characteristics
Figure 2. Average forward power dissipation
versus average forward current
P (W)
F(AV)
18
16
14
12
10
8
6
4
2
0
0 4 8 1216202428
δ = 0.05
δ = 0.1
δ = 0.2
T
δ = t / T
p
δ = 0.5
t
p
δ = 1
I (A)
F(AV)
Figure 4. Normalized avalanche power
derating versus pulse duration
P(tp)
ARM
P (1µs)
ARM
1
0.1
Figure 3. Average forward current versus
ambient temperature (δ = 0.5)
I (A)
F(AV)
24
R
= R
th(j-a)
T (°C)
amb
th(j-c)
20
16
12
8
4
0
0 25 50 75 100 125 150
Figure 5. Normalized avalanche power
derating versus junction
temperature
P(T)
ARM j
P (25 °C)
ARM
1.2
1
0.8
0.01
t (µs)
0.001
0.10.01 1
10 100
p
1000
Figure 6. Non repetitive surge peak forward
current versus overload duration
(maximum values)
I (A)
M
350
300
250
200
150
100
I
M
50
0
1.E-03 1.E-02 1.E-01 1.E+00
t
δ = 0.5
T = 25 °C
c
T = 75 °C
c
T = 125 °C
c
t(s)
0.6
0.4
0.2
0
25 50 75 100 125
Figure 7. Relative variation of thermal
impedance junction to case versus
pulse duration
Z/R
th(j-c) th(j-c)
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
Single pulse
0.2
0.1
0.0
1.E-04 1.E-03 1.E-02 1.E-01 1.E+00
T (°C)
t (s)
p
j
150
Doc ID 019045 Rev 1 3/9
Characteristics STPS20M60S
Figure 8. Reverse leakage current versus
reverse voltage applied
(typical values)
I (mA)
R
1.E+02
1.E+01
1.E+00
1.E-01
1.E-02
1.E-03
0 102030405060
T = 150 °C
j
T = 125 °C
j
T = 100 °C
j
T = 75 °C
j
T = 50 °C
j
T = 25 °C
j
V (V)
Figure 10. Forward voltage drop versus
forward current
I (A)
FM
1000.0
T = 125 °C
j
T = 125 °C
j
(Maximum values)
T = 25 °C
j
(Maximum values)
V (V)
FM
100.0
(Typical values)
10.0
1.0
0.1
0.0 0.2 0.4 0.6 0.8 1.0 1.2
Figure 9. Junction capacitance versus
reverse voltage applied
(typical values)
C(pF)
10000
1000
R
100
1 10 100
Figure 11. Thermal resistance junction to
ambient versus copper surface
under tab
R (°C/W)
th(j-a)
80
70
60
50
40
30
20
10
0
0 5 10 15 20 25 30 35 40
epoxy printed board copper thickness = 35 µm
2
DPAK
F = 1 MHz
V = 30 mV
osc RMS
T = 25 °C
j
S (cm )
Cu
V (V)
R
2
Figure 12. Reverse safe operating area (tp < 1 µs and Tj < 150 °C)
I (A)
arm
105.0
100.0
95.0
90.0
85.0
80.0
75.0
70.0
65.0
60.0
80 85 90 95 100 105 110 115 120
4/9 Doc ID 019045 Rev 1
I (V ) 150 °C, 1µs
arm arm
V (V)
arm
STPS20M60S Package information
2 Package information
● Epoxy meets UL94, V0
● Cooling method: by conduction (C)
● Recommended torque value: 0.4 to 0.6 N·m
In order to meet environmental requirements, ST offers these devices in different grades of
ECOPACK
specifications, grade definitions and product status are available at: www.st.com
ECOPACK
Table 5. TO-220AB dimensions
®
packages, depending on their level of environmental compliance. ECOPACK®
®
is an ST trademark.
.
Dimensions
Ref.
Millimeters Inches
Min. Max. Min. Max.
A 4.40 4.60 0.173 0.181
C 1.23 1.32 0.048 0.051
H2
Dia
A
C
D 2.40 2.72 0.094 0.107
E 0.49 0.70 0.019 0.027
L2
F2
F1
F
G1
L5
L9
L6
D
L4
M
E
F 0.61 0.88 0.024 0.034
L7
F1 1.14 1.70 0.044 0.066
F2 1.14 1.70 0.044 0.066
G 4.95 5.15 0.194 0.202
G1 2.40 2.70 0.094 0.106
H2 10 10.40 0.393 0.409
L2 16.4 Typ. 0.645 Typ.
L4 13 14 0.511 0.551
L5 2.65 2.95 0.104 0.116
G
L6 15.25 15.75 0.600 0.620
L7 6.20 6.60 0.244 0.259
L9 3.50 3.93 0.137 0.154
M 2.6 Typ. 0.102 Typ.
Dia. 3.75 3.85 0.147 0.151
Doc ID 019045 Rev 1 5/9
Package information STPS20M60S
Table 6. D
L2
L
L3
2
PAK dimensions
E
A1
B2
B
G
* FLAT ZONE NO LESSTHAN 2mm
Dimensions
Ref.
Millimeters Inches
Min. Max. Min. Max.
A 4.40 4.60 0.173 0.181
A
A1 2.49 2.69 0.098 0.106
C2
A2 0.03 0.23 0.001 0.009
B 0.70 0.93 0.027 0.037
D
B2 1.14 1.70 0.045 0.067
C 0.45 0.60 0.017 0.024
C2 1.23 1.36 0.048 0.054
C
R
D 8.95 9.35 0.352 0.368
E 10.00 10.40 0.393 0.409
A2
G 4.88 5.28 0.192 0.208
L 15.00 15.85 0.590 0.624
M
*
V2
L2 1.27 1.40 0.050 0.055
L3 1.40 1.75 0.055 0.069
M 2.40 3.20 0.094 0.126
R 0.40 typ. 0.016 typ.
V2 0° 8° 0° 8°
Figure 13. D2PAK footprint (dimensions in mm)
16.90
10.30
8.90
5.08
1.30
3.70
6/9 Doc ID 019045 Rev 1
STPS20M60S Package information
Table 7. I2PAK dimensions
Dimensions
L2
Ref.
Millimeters Inches
Min. Max. Min. Max.
A
E
c2
A 4.40 4.60 0.173 0.181
A1 2.40 2.72 0.094 0.107
b 0.61 0.88 0.024 0.035
D
b1 1.14 1.70 0.044 0.067
c 0.49 0.70 0.019 0.028
L1
L
b1
A1
c2 1.23 1.32 0.048 0.052
D 8.95 9.35 0.352 0.368
e 2.40 2.70 0.094 0.106
e1 4.95 5.15 0.195 0.203
b
e
e1
c
E 10 10.40 0.394 0.409
L 13 14 0.512 0.551
L1 3.50 3.93 0.138 0.155
L2 1.27 1.40 0.050 0.055
Doc ID 019045 Rev 1 7/9
Ordering information STPS20M60S
3 Ordering information
Table 8. Ordering information
Order code Marking Package Weight Base qty Delivery mode
STPS20M60ST STPS20M60ST TO-220AB 2.2 g 50 Tube
STPS20M60SR STPS20M60SR I2PAK 1.49 g 50 Tube
2
STPS20M60SG-TR STPS20M60SG D
PAK 1.48 g 1000 Tape and reel
4 Revision history
Table 9. Revision history
Date Revision Changes
11-Oct-2011 1 Initial release
8/9 Doc ID 019045 Rev 1
STPS20M60S
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Doc ID 019045 Rev 1 9/9
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