March 2007 Rev 6 1/8
8
STPS1045
Power Schottky rectifier
Main product characteristics
Features and Benefits
■Very small conduction losses
■Negligible switching losses
■Extremely fast switching
■Low forward voltage drop
■Insulated package: TO-220FPAC
Insulating voltage = 2000V DC
Capacitance = 12 pF
■Avalanche capability specified
Description
Single chip Schottky rectifier suited for Switch
Mode Power Supply and high frequency DC to
DC converters.
This device is intended for use in low voltage, high
frequency inverters, free wheeling and polarity
protection applications.
IF(AV) 10 A
VRRM 45 V
VF0.57 V
TO-220AC
STPS1045D
TO-220FPAC
STPS1045FP
AK
A
K
A
K
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Characteristics STPS1045
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1 Characteristics
Table 1. Absolute Ratings (limiting values)
Symbol Parameter Value Unit
VRRM Repetitive peak reverse voltage 45 V
IF(RMS) RMS forward voltage 30 A
IF(AV)
Average forward
current
δ = 0.5
TO-220AC Tc = 150° C
10 A
TO-220FPAC Tc = 145° C
IFSM Surge non repetitive forward current tp = 10 ms
sinusoidal 180 A
Repetitive peak reverse current tp = 2 µs
F = 1 kHz 1A
PARM Repetitive peak avalanche power tp = 1 µs Tj = 25°
C4000 W
Tstg Storage temperature range -65 to + 175 °C
TjMaximum junction temperature 175 °C
dV/dt Critical rate of rise of reverse voltage 10000 V/µs
Table 2. Thermal resistances
Symbol Parameter Value Unit
Rth(j-c) Junction to case TO-220AC 2.2 °C/W
TO-220FPAC 4.5
Table 3. Static electrical characteristics
Symbol Parameter Test Conditions Min. Typ. Max. Unit
IR(1)
1. Pulse test: tp = 5 ms, δ < 2%
Reverse leakage current Tj = 25° C VR = VRRM
100 µA
Tj = 125° C 15 mA
VF(2)
2. Pulse test: tp = 380 µs, δ < 2%
To evaluate the conduction losses use the following equation:
P = 0.42 x IF(AV) + 0.015 IF2(RMS)
Forward voltage drop
Tj = 25° C IF = 20 A 0.84
VTj = 125° C IF = 20 A 0.72
Tj = 125° C IF = 10 A 0.60
STPS1045 Characteristics
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Figure 1. Average forward power dissipation
versus average forward current
Figure 2. Average forward current versus
ambient temperature (δ = 0.5)
0123456789101112
0
1
2
3
4
5
6
7
8
P (W)
F(AV)
T
δ=tp/T tp
δ= 1
I (A)
F(AV)
δ= 0.5
δ= 0.2
δ= 0.1
δ= 0.05
0 25 50 75 100 125 150 175
I (A)
F(AV)
R =15°C/W
th(j-a)
T (°C)
amb
T
δ=tp/T tp
R=R
th(j-a) th(j-c) TO-220AC
TO-220FPAC
0
2
4
6
8
10
12
Figure 3. Normalized avalanche power
derating versus pulse duration
Figure 4. Normalized avalanche power
derating versus junction
temperature
0.001
0.01
0.10.01 1
0.1
10 100 1000
1
t (µs)
p
P(t)
P (1µs)
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 (25°C)
ARM p
ARM
Figure 5. Non repetitive surge peak forward
current versus overload duration
(maximum values) (TO-220AC)
Figure 6. Non repetitive surge peak forward
current versus overload duration
(maximum values) (TO-220FPAC)
1E-3 1E-2 1E-1 1E+0
0
20
40
60
80
100
120
140
160
I (A)
M
IM
t
δ=0.5 t(s)
T =50°C
C
T =100°C
C
T =150°C
C
I (A)
M
1E-3 1E-2 1E-1 1E+0
0
10
20
30
40
50
60
70
80
90
100
IM
t
δ=0.5 t(s)
T =50°C
C
T =100°C
C
T =150°C
C
Characteristics STPS1045
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Figure 7. Relative variation of thermal
transient impedance junction to
case versus pulse duration
(TO-220AC)
Figure 8. Relative variation of thermal
transient impedance junction to
case versus pulse duration
(TO-220FPAC)
1E-4 1E-3 1E-2 1E-1 1E+0
0.0
0.2
0.4
0.6
0.8
1.0
Z/R
th(j-c) th(j-c)
T
δ=tp/T tp
t (s)
p
δ= 0.5
δ= 0.2
δ= 0.1
Single pulse
1E-3 1E-2 1E-1 1E+0 1E+1
0.0
0.2
0.4
0.6
0.8
1.0
Z/R
th(j-c) th(j-c)
T
δ=tp/T tp
t (s)
p
δ= 0.5
δ= 0.2
δ= 0.1
Single pulse
Figure 9. Reverse leakage current versus
reverse voltage applied (typical
values)
Figure 10. Reverse leakage current versus
reverse voltage applied (typical
values)
Figure 11. Forward voltage drop versus
forward current (maximum values)
0 5 10 15 20 25 30 35 40 45
1E-1
1E+0
1E+1
1E+2
1E+3
1E+4
1E+5
I (µA)
R
V (V)
R
T =125°C
j
T =150°C
j
T =100°C
j
T =25°C
j
T =50°C
j
T =75°C
j
12 51020 50
100
200
500
1000
C(pF)
V (V)
R
F=1MHz
V =30mV
T =25°C
OSC RMS
j
0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6
0.1
1.0
10.0
100.0
I (A)
FM
T =125°C
(typical values)
j
T =25°C
j
T =125°C
j
V (V)
FM
STPS1045 Package Information
5/8
2 Package Information
●Epoxy meets UL94, V0
●Cooling method: by conduction (C)
●Recommended torque value: 0.55 Nm
●Maximum torque value: 0.70 Nm
Figure 12. TO-220AC dimensions
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
A
C
D
L7
Ø I
L5
L6
L9
L4
F
H2
G
L2
F1
E
M
Package Information STPS1045
6/8
In order to meet environmental requirements, ST offers these devices in ECOPACK®
packages. These packages have a lead-free second level interconnect. The category of
second level interconnect is marked on the package and on the inner box label, in
compliance with JEDEC Standard JESD97. The maximum ratings related to soldering
conditions are also marked on the inner box label. ECOPACK is an ST trademark.
ECOPACK specifications are available at: www.st.com.
Figure 13. TO-220FPAC dimensions
Ref
Dimensions
Millimeters Inches
Min. Max. Min. Max.
A 4.4 4.6 0.173 0.181
B 2.5 2.7 0.098 0.106
D 2.5 2.75 0.098 0.108
E 0.45 0.70 0.018 0.027
F 0.75 1 0.030 0.039
F1 1.15 1.70 0.045 0.067
G 4.95 5.20 0.195 0.205
G1 2.4 2.7 0.094 0.106
H 10 10.4 0.393 0.409
L2 16 Typ. 0.63 Typ.
L3 28.6 30.6 1.126 1.205
L4 9.8 10.6 0.386 0.417
L5 2.9 3.6 0.114 0.142
L6 15.9 16.4 0.626 0.646
L7 9.00 9.30 0.354 0.366
Dia. 3.00 3.20 0.118 0.126
H
A
B
Dia
L7
L6
L5
F1
F
D
E
L4
G1
G
L2
L3
STPS1045 Ordering Information
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3 Ordering Information
4 Revision history
Ordering type Marking Package Weight Base qty Delivery
mode
STPS1045D STPS1045D TO-220AC 1.86 g 50 Tube
STPS1045FP STPS1045FP TO-220FPAC 1.9 g 50 Tube
Date Revision Description of Changes
Jul-2003 5D Last release.
22-Mar-2007 6 Removed ISOWATT package.
STPS1045
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