Page 1
STPS20SM60C
Power Schottky rectifier
Features
■ High current capability
■ Avalanche rated
■ Low forward voltage drop
■ High frequency operation
Description
The STPS20SM60C is a dual diode Schottky
rectifier, suited for high frequency switch mode
power supply.
2 x 10 A
60 V
2
PAK and
Packaged in TO-220AB, TO-220FPAB, I
2
D
PAK, this 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) 0.420 V
V
F
(max) 150 °C
T
j
A1
K
A2
K
K
A2
K
A1
I2PAK
STPS20SM60CR
STPS20SM60CG-TR
A1
2
PAK
D
K
A1
K
A2
TO-220FPAB
STPS20SM60CFP
K
A1
TO-220AB
STPS20SM60CT
A2
Figure 1. Electrical characteristics
2 x I
O
I
"Forward"
X
V
I
A2
(a)
I
F
I
V
RRM
V
V
a. V
ARM
operating area defined in Figure 14. 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 022015 Rev 1 1/11
www.st.com
11
Page 2
Characteristics STPS20SM60C
1 Characteristics
Table 2. Absolute ratings (limiting values, per diode, at T
otherwise specified)
Symbol Parameter Value Unit
= 25 °C unless
amb
V
I
F(RMS)
I
F(AV)
I
FSM
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
avalanche energy measurements and diode validation in the avalanche are provided in the application
notes AN1768 and AN2025.
2. See Figure 14
3. condition to avoid thermal runaway for a diode on its own heatsink
Table 3. Thermal parameters
Repetitive peak reverse voltage 60 V
RRM
Forward rms current 30 A
(3)
T
= 135 °C
c
= 130 °C
T
c
= 110 °C
T
c
= 90 °C
T
c
TO-220AB,
2
PAK, D2PA K
Average forward current,
I
δ = 0.5
TO-220FPAB
Surge non repetitive
forward current
(1)
Repetitive peak avalanche power Tj = 25 °C, tp = 1 µs 8700 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
<
Rth(j-a)
1
dPtot
dTj
t
= 10 ms sine-wave 220 A
p
< 1 µs, Tj < 150 °C, IAR < 32.6 A 80 V
t
p
t
< 1 µs, Tj < 150 °C, IAR < 32.6 A 80 V
p
Per diode
Per device
Per diode
Per device
10
20
10
20
150 °C
Symbol Parameter Value Unit
per diode 2.00
total 1.13
per diode 4.90
total 4.05
2
PAK , D2PA K 0 .2 5
°C/W
°C/W
R
R
th(j-c)
th(c)
Junction to case
Coupling
TO-220AB
I2PA K , D2PA K
TO-220FPAB
TO-220AB, I
TO-220FPAB 3.20
A
When the two diodes 1 and 2 are used simultaneously:
ΔT
(diode 1) = P(diode 1) x R
j
2/11 Doc ID 022015 Rev 1
(Per diode) + P(diode 2) x R
th(j-c)
th(c)
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STPS20SM60C Characteristics
Table 4. Static electrical characteristics (per diode)
Symbol Parameter Test conditions Min. Typ. Max. Unit
(1)
I
R
V
Reverse leakage current
(2)
Forward voltage drop
F
1. Pulse test: tp = 5 ms, δ < 2 %
2. Pulse test: t
= 380 µs, δ < 2 %
p
= 25 °C
T
j
= 125 °C - 5 25 mA
T
j
Tj = 25 °C
= 125 °C - 0.420 0.475
T
j
= 25 °C
T
j
= 125 °C - 0.525 0.600
T
j
V
= V
R
I
= 5 A
F
I
= 10 A
F
RRM
-1040µA
- 0.505 0.545
- 0.580 0.645
To evaluate the conduction losses use the following equation:
P = 0.455 x I
Figure 2. Average forward power dissipation
versus average forward current
(per diode)
P (W)
F(AV)
9
8
7
6
5
4
3
2
1
0
0 1 2 3 4 5 6 7 8 9 10 11 12 13
δ = 0.05
δ = 0.1
Figure 4. Normalized avalanche power
derating versus pulse duration
+ 0.0145 x I
F(AV)
δ = 0.2
T
δ = t / T
p
F2(RMS)
Figure 3. Average forward current versus
ambient temperature
(δ = 0.5, per diode)
I (A)
F(AV)
12
R
δ = 0.5
t
p
δ = 1
I (A)
F(AV)
10
8
6
4
2
0
0 25 50 75 100 125 150
TO-220AB/I PAK/D PAK
= R
th(j-a)
22
TO-220FPAB
T (°C)
amb
th(j-c)
Figure 5. Normalized avalanche power
derating versus junction
temperature
P(tp)
P (1µs)
ARM
1
ARM
P (25 °C)
1.2
1
P(T)
ARM j
ARM
V
0.1
0.01
0.001
0.10.01 1
10 100
0.8
0.6
0.4
0.2
T (°C)
t (µs)
p
1000
0
25 50 75 100 125
j
150
Doc ID 022015 Rev 1 3/11
Page 4
Characteristics STPS20SM60C
Figure 6. Non repetitive surge peak forward
current versus overload duration
(maximum values, per diode)
I (A)
M
160
140
120
100
80
60
40
I
M
20
0
1.E-03 1.E-02 1.E-01 1.E+00
δ = 0.5
t
TO-220AB/I PAK/D PAK
22
T = 25 °C
c
T = 75 °C
c
T = 125 °C
c
t(s)
Figure 8. Relative 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
0.2
Single pulse
0.1
0.0
1.E-04 1.E-03 1.E-02 1.E-01 1.E+00
TO-220AB/I PAK/D PAK
22
t (s)
p
Figure 10. Reverse leakage current versus
reverse voltage applied
(typical values, per diode)
I (mA)
R
1.E+02
T = 150 °C
1.E+01
1.E+00
1.E-01
1.E-02
1.E-03
0 102030405060
j
T = 125 °C
j
T = 100 °C
j
T = 75 °C
j
T = 50 °C
j
T = 25 °C
j
V (V)
R
Figure 7. Non repetitive surge peak forward
current versus overload duration
(maximum values, per diode)
I (A)
M
100
90
80
70
60
50
40
30
20
I
M
10
0
1.E-03 1.E-02 1.E-01 1.E+00
δ
= 0.5
t
TO-220FPAB
T = 25 °C
c
T = 75 °C
c
T = 125 °C
c
Figure 9. Relative 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-03 1.E-02 1.E-01 1.E+00 1.E+01
TO-220FPAB
t (s)
p
Figure 11. Junction capacitance versus
reverse voltage applied
(typical values, per diode)
C(pF)
1000
100
1 10 100
F = 1 MHz
V = 30 mV
osc RMS
T = 25 °C
j
V (V)
R
4/11 Doc ID 022015 Rev 1
Page 5
STPS20SM60C Characteristics
0510
5
0
5303540
Figure 12. Forward voltage drop versus
forward current (per diode)
Figure 13. Thermal resistance junction to
ambient versus copper surface
under tab
I (A)
FM
100.0
T = 125 °C
j
(Maximum values)
T = 125 °C
j
10.0
(Typical values)
1.0
0.1
0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6
T = 25 °C
j
(Maximum values)
V (V)
FM
R (°C/W)
th(j-a)
80
70
60
50
40
30
20
10
0
Epoxy printed circuit board FR4
Figure 14. Reverse safe operating area (tp < 1 µs and Tj < 150 °C)
I (A)
arm
34.0
32.0
30.0
28.0
26.0
24.0
22.0
20.0
80 85 90 95 100 105 110 115 120
I (V ) 150 ° C, 1µs
arm arm
copper thickness= 35 µm
1
2
V (V)
arm
2
DPAK
S (cm²)
cu
2
Doc ID 022015 Rev 1 5/11
Page 6
Package information STPS20SM60C
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
6/11 Doc ID 022015 Rev 1
M 2.6 Typ. 0.102 Typ.
Dia. 3.75 3.85 0.147 0.151
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STPS20SM60C Package information
Table 6. TO-220FPAB dimensions
Dimensions
Ref.
Millimeters Inches
Min. Max. Min. Max.
A 4.4 4.9 0.173 0.192
A
H
B
B 2.5 2.9 0.098 0.114
D 2.45 2.75 0.096 0.108
E 0.4 0.7 0.016 0.028
Dia.
F 0.6 1 0.024 0.039
L6
L7
L2
L3
F1 1.15 1.7 0.045 0.067
F2 1.15 1.7 0.045 0.067
G 4.95 5.2 0.195 0.205
F1
F2
L4
D
G1 2.4 2.7 0.094 0.106
H 10 10.7 0.394 0.421
L2 16 Typ. 0.630 Typ.
F
G1
G
E
L3 28.6 30.6 1.126 1.205
L4 9.8 10.7 0.386 0.421
L6 15.8 16.4 0.622 0.646
L7 9 9.9 0.354 0.390
Dia. 2.9 3.5 0.114 0.138
Doc ID 022015 Rev 1 7/11
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Package information STPS20SM60C
Table 7. 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 15. D2PAK footprint (dimensions in mm)
16.90
10.30
8.90
5.08
1.30
3.70
8/11 Doc ID 022015 Rev 1
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STPS20SM60C Package information
Table 8. 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 022015 Rev 1 9/11
Page 10
Ordering information STPS20SM60C
3 Ordering information
Table 9. Ordering information
Order code Marking Package Weight Base qty Delivery mode
STPS20SM60CT STPS20SM60CT TO-220AB 2.20 g 50 Tube
STPS20SM60CFP PS20SM60CFP TO-220FPAB 2.0 g 50 Tube
2
STPS20SM60CR STPS20SM60CR I
STPS20SM60CG-TR STPS20SM60CG D
PAK 1.49 g 50 Tube
2
PAK 1.48 g 1000 Tape and reel
4 Revision history
Table 10. Revision history
Date Revision Changes
14-Oct-2011 1 Initial release.
10/11 Doc ID 022015 Rev 1
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STPS20SM60C
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Doc ID 022015 Rev 1 11/11
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