1/6
Table 1: Main Product Characteristics
I
F(AV)
20 A
V
RRM
120 V
T
j
(max)
175C
V
F
(typ)
0.54 V
STPS20120D
POWER SCHOTTKY RECTIFIER
REV. 1
Table 3: Absolute Ratings (limiting values)
Symbol
Parameter
Value
Unit
V
RRM
Repetitive peak reverse voltage
120
V
I
F(RMS)
RMS forward voltage
30
A
I
F(AV)
Average forward current
= 0.5 T
c
= 130C
20
A
I
FSM
Surge non repetitive forward current
t
p
= 10ms sinusoidal
200
A
P
ARM
Repetitive peak avalanche power
t
p
= 1s T
j
= 25C
8600
W
T
stg
Storage temperature range
-65 to + 175
C
T
j
Maximum operating junction temperature *
175
C
* :
thermal runaway condition for a diode on its own heatsink
dPtot
dTj
---------------
1
Rth j
a
(
)
--------------------------
>
K
A
K
TO-220AB
STPS20120D
K
A
February 2004
FEATURES AND BENEFITS
High junction temperature capability
Avalanche rated
Low leakage current
Good trade-off between leakage current and
forward voltage drop
DESCRIPTION
Single Schottky rectifier suited for high frequency
Switch Mode Power Supply.
Packaged in TO-220AC, this device is intended to
be used in notebook & LCD adaptors, desktop
SMPS, providing in these applications a margin
between the remaining voltages applied on the
diode and the voltage capability of the diode.
Table 2: Order Code
Part Number
Marking
STPS20120D
STPS20120D
STPS20120D
2/6
Table 4: Thermal Parameters
Table 5: Static Electrical Characteristics
Pulse test:
* tp = 5 ms,
< 2%
** tp = 380 s,
< 2%
To evaluate the conduction losses use the following equation: P = 0.56 x IF(AV) + 0.010 IF
2
(RMS)
Symbol
Parameter
Value
Unit
R
th(j-c)
Junction to case
2.2
C/W
Symbol
Parameter
Tests conditions
Min.
Typ
Max.
Unit
I
R
*
Reverse leakage current
T
j
= 25C
V
R
= V
RRM
20
A
T
j
= 125C
3
10
mA
V
F
**
Forward voltage drop
T
j
= 25C
I
F
= 5A
0.7
V
T
j
= 125C
0.54
0.58
T
j
= 25C
I
F
= 10A
0.8
T
j
= 125C
0.62
0.66
T
j
= 25C
I
F
= 20A
0.93
T
j
= 125C
0.72
0.76
STPS20120D
3/6
Figure 1: Average forward power dissipation
versus average forward current
Figure 2: Average forward current versus
ambient temperature (
= 0.5)
Figure 3: Normalized avalanche power
derating versus pulse duration
Figure 4:
Normalized avalanche power
derating versus junction temperature
Figure 5: Non repetitive surge peak forward
current versus overload duration (maximum
values)
Figure 6: Relative variation of thermal
impedance junction to ambient versus pulse
duration
0
2
4
6
8
10
12
14
16
18
20
22
24
26
28
0
2
4
6
8
10
12
14
16
18
20
22
24
26
P
(W)
F(AV)
T
=tp/T
tp
= 1
= 0.05
I
(A)
F(AV)
= 0.5
= 0.2
= 0.1
0
2
4
6
8
10
12
14
16
18
20
22
0
25
50
75
100
125
150
175
I
(A)
F(AV)
T
=tp/T
tp
T
(C)
amb
R
=15C/W
th(j-a)
R
=R
th(j-a)
th(j-c)
0.001
0.01
0.1
0.01
1
0.1
10
100
1000
1
t (s)
p
P
(t )
P
(1s)
ARM p
ARM
0
0.2
0.4
0.6
0.8
1
1.2
25
50
75
100
125
150
T (C)
j
P
(t )
P
(25C)
ARM p
ARM
0
20
40
60
80
100
120
140
1.E-03
1.E-02
1.E-01
1.E+00
I (A)
M
I
M
t
=0.5
T =25C
c
T =75C
c
T =125C
c
t(s)
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
1.E-03
1.E-02
1.E-01
1.E+00
Z
/R
th(j-c)
th(j-c)
T
=tp/T
tp
t (s)
p
= 0.5
= 0.2
= 0.1
Single pulse
STPS20120D
4/6
Figure 7: Reverse leakage current versus
reverse voltage applied (typical values)
Figure 8: Junction capacitance versus reverse
voltage applied (typical values)
Figure 9: Forward voltage drop versus forward
current
1.E-05
1.E-04
1.E-03
1.E-02
1.E-01
1.E+00
1.E+01
1.E+02
0
10
20
30
40
50
60
70
80
90
100
110
120
I (mA)
R
V (V)
R
T =125C
j
T =25C
j
T =50C
j
T =75C
j
T =100C
j
T =150C
j
10
100
1000
1
10
100
C(pF)
V (V)
R
F=1MHz
V
=30mV
T =25C
OSC
RMS
j
1
10
100
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
I
(A)
FM
V
(V)
FM
T =25C
(maximum values)
j
T =125C
(maximum values)
j
T =125C
(typical values)
j
STPS20120D
5/6
Figure 10: TO-220AC Package Mechanical Data
A
C
D
E
M
L7
H2
I
L5
L6
L9
L4
G
F1
F
L2
Table 6: Ordering Information
Epoxy meets UL94, V0
Cooling method: by conduction (C)
Recommended torque value: 0.55 m.N.
Maximum torque value: 0.70 m.N.
Ordering type
Marking
Package
Weight
Base qty
Delivery mode
STPS20120D
STPS20120D
TO-220AC
1.90 g
50
Tube
Table 7: Revision History
Date
Revision
Description of Changes
18-Feb-2005
1
First issue.
REF.
DIMENSIONS
Millimeters
Inches
Min.
Max.
Min.
Max.
A
4.40
4.60
0.173
0.181
C
1.23
1.32
0.048
0.051
D
2.40
2.72
0.094
0.107
E
0.49
0.70
0.019
0.027
F
0.61
0.88
0.024
0.034
F1
1.14
1.70
0.044
0.066
G
4.95
5.15
0.194
0.202
H2
10.00
10.40
0.393
0.409
L2
16.40 typ.
0.645 typ.
L4
13.00
14.00
0.511
0.551
L5
2.65
2.95
0.104
0.116
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.
Diam. I
3.75
3.85
0.147
0.151
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