October 2016
DocID3506 Rev 10
1/15
This is information on a product in full production.
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STPS2045C
Power Schottky rectifier
Datasheet - production data
Features
Very small conduction losses
Negligible switching losses
Extremely fast switching
Insulated package: TO-220FPAB
Insulating voltage = 2000 VRMS sine
Avalanche rated
ECOPACK®2 compliant component for
D²PAK on demand
Description
Dual center tap Schottky rectifier suited for switch
mode power supply and high frequency DC to
DC converters. Packaged either in TO-220AB,
TO-220FPAB, or D²PAK, this device is especially
intended for use in low voltage, high frequency
inverters, free wheeling and polarity protection
applications.
Table 1: Device summary
Symbol
Value
IF(AV)
2 x 10 A
VRRM
45 V
VF (typ.)
0.5 V
Tj (max.)
175 °C
A1 K
A2
A1 KA2
TO-220AB
K
A1KA2
TO-220FPAB
KK
A1 A1
A2 A2
D²PAK
Characteristics
STPS2045C
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DocID3506 Rev 10
1 Characteristics
Table 2: Absolute ratings (limiting values, per diode, at 25 °C, unless otherwise specified)
Symbol
Parameter
Value
Unit
VRRM
Repetitive peak reverse voltage
45
V
IF(RMS)
Forward rms current
30
A
IF(AV)
Average forward
current
δ = 0.5, square wave
TO-220AB /
D²PAK
TC = 155 °C
Per diode
10
A
Per device
20
TO-220FPAB
TC = 140 °C
Per diode
10
TC = 125 °C
Per device
20
IFSM
Surge non repetitive forward current
tp = 10 ms
sinusoidal
180
A
PARM(1)
Repetitive peak avalanche power
tp = 10 µs,
Tj = 125 °C
280
W
VARM(2)
Maximum repetitive peak avalanche voltage
tp < 10 µs,
Tj < 125 °C,
IAR < 7.7 A
60
V
VASM(2)
Maximum single-pulse peak avalanche voltage
Tstg
Storage temperature range
-65 to +175
°C
Tj
Maximum operating junction temperature (3)
175
Notes:
(1)For pulse time duration deratings, please refer to Figure 3. More details regarding the avalanche energy
measurements and diode validation in the avalanche are provided in the STMicroelectronics Application notes
AN1768, “Admissible avalanche power of Schottky diodes” and AN2025, “Converter improvement using Schottky
rectifier avalanche specification”.
(2)See Figure 9.
(3)(dPtot/dTj) < (1/Rth(j-a)) condition to avoid thermal runaway for a diode on its own heatsink.
Table 3: Thermal parameters
Symbol
Parameter
Max. value
Unit
Rth(j-c)
Junction to case
TO-220AB / D²PAK
Per diode
2.2
°C/W
Total
1.4
TO-220FPAB
Per diode
4.5
Total
3.5
Rth(c)
Coupling
TO-220AB / D²PAK
0.4
TO-220FPAB
2.5
When the diodes 1 and 2 are used simultaneously:
ΔTj (diode1) = P(diode1) x Rth(j-c) (per diode) + P(diode2) x Rth(c)
STPS2045C
Characteristics
DocID3506 Rev 10
3/15
Table 4: Static electrical characteristics (per diode)
Symbol
Parameter
Test conditions
Min.
Typ.
Max.
Unit
IR(1)
Reverse leakage current
Tj = 25 °C
VR = VRRM
-
100
µA
Tj = 125 °C
-
7
15
mA
VF(1)
Forward voltage drop
Tj = 125 °C
IF = 10 A
-
0.5
0.57
V
Tj = 25 °C
IF = 20 A
-
0.84
Tj = 125 °C
-
0.65
0.72
Notes:
(1)Pulse test: tp = 380 µs, δ < 2%
To evaluate the conduction losses, use the following equation:
P = 0.42 x IF(AV) + 0.015 x IF2(RMS)
Characteristics
STPS2045C
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DocID3506 Rev 10
1.1 Characteristics (curves)
Figure 1: Average forward power dissipation
versus average forward current (per diode)
Figure 2: Average forward current versus ambient
temperature (δ = 0.5, per diode)
Figure 3: Normalized avalanche power deratings
versus pulse duration (Tj = 125 °C)
Figure 4: Reverse leakage current versus reverse
voltage applied (typical values, per diode)
Figure 5: Relative variation of thermal impedance
junction to case versus pulse duration
(TO-220AB, D²PAK)
Figure 6: Relative variation of thermal impedance
junction to case versus pulse duration
(TO-220FPAB)
0
1
2
3
4
5
6
7
8
T
= tp/Ttp
= 1
=0.5
=0.2
=0.1
=0.05 δδδ
δ
δ
δ
PF(AV)(W)
IF(AV)(A)
0 1 2 3 4 5 6 7 8 9 10 11 12
0 25 50 75 100 125 150 175
0
2
4
6
8
10 D²PAK
T (°C)
amb
T
= tp/T tp
δ
IF(AV)(A)
Rth(j-a) = Rth(j-c)
Rth(j-a) = 15 °C/W
TO-220AB
TO-220FPAB
12
P (tp)
P (10 µs)
ARM
ARM
0.001
0.01
0.1
1
1 10 100 1000
t (µs)
p
0 5 10 15 20 25 30 35 40 45
1E-1
1E+0
1E+1
1E+2
1E+3
1E+4
5E+4
T = 150°C
j
T = 125°C
j
T = 100°C
j
T = 75°C
j
T = 50°C
j
T = 25°C
j
IR(µA)
VR(V)
1E-4 1E-3 1E-2 1E-1 1E+0
0.0
0.2
0.4
0.6
0.8
1.0
Single pulse
δ= 0.1
δ= 0.2
δ= 0.5
t (s)
p
Z /R
th(j-c) th(j-c)
T
δ= tp/T tp
1E-3 1E-2 1E-1 1E+0 1E+1
0.0
0.2
0.4
0.6
0.8
1.0
= 0.1
= 0.2
= 0.5
t (s)
p
T
δ= tp/T tp
Z /R
th(j-c) th(j-c)
δ
δ
δ
Single pulse
STPS2045C
Characteristics
DocID3506 Rev 10
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Figure 7: Junction capacitance versus reverse
voltage applied (typical values, per diode)
Figure 8: Forward voltage drop versus forward
current (maximum values, per diode)
Figure 9: Reverse safe operating area
(tp < 10 µs and Tj < 125 °C)
Figure 10: Thermal resistance junction to ambient
versus copper surface under tab for D²PAK
100
200
500
1000 C(pF)
VR(V)
F = 1 MHz
VOSC = 30 mVRMS
Tj= 25 °C
1 2 5 10 20 50
Iarm(A)
0
10
20
30
40
50
60
70
80
0 5 10 15 20 25 30 35 40
SCu(cm²)
Rth(j-a)(°C/W)
Epoxy printed board FR4, eCU= 35 µm
Package information
STPS2045C
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DocID3506 Rev 10
2 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.
Cooling method: by conduction (C)
Epoxy meets UL 94,V0
Recommended torque value: 0.55 N·m (for TO-220AB and TO-220FPAB)
Maximum torque value: 0.7 N·m (for TO-220AB and TO-220FPAB)
STPS2045C
Package information
DocID3506 Rev 10
7/15
2.1 TO-220AB package information
Figure 11: TO-220AB package outline
Package information
STPS2045C
8/15
DocID3506 Rev 10
Table 5: TO-220AB package mechanical data
Ref.
Dimensions
Millimeters
Inches
Min.
Max.
Min.
Max.
A
4.40
4.60
0.173
0.181
b
0.61
0.88
0.240
0.035
b1
1.14
1.70
0.045
0.067
c
0.48
0.70
0.019
0.028
D
15.25
15.75
0.600
0.620
D1
1.27 typ.
0.050 typ.
E
10.00
10.40
0.394
0.409
e
2.40
2.70
0.094
0.106
e1
4.95
5.15
0.195
0.203
F
1.23
1.32
0.048
0.052
H1
6.20
6.60
0.244
0.260
J1
2.40
2.72
0.094
0.107
L
13.00
14.00
0.512
0.551
L1
3.50
3.93
0.138
0.155
L20
16.40 typ.
0.646 typ.
L30
28.90 typ.
1.138 typ.
θP
3.75
3.85
0.148
0.152
Q
2.65
2.95
0.104
0.116
STPS2045C
Package information
DocID3506 Rev 10
9/15
2.2 TO-220FPAB package information
Figure 12: TO-220FPAB package outline
Package information
STPS2045C
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DocID3506 Rev 10
Table 6: TO-220FPAB package mechanical data
Ref.
Dimensions
Millimeters
Inches
Min.
Max.
Min.
Max.
A
4.40
4.60
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
0.028
F
0.75
1
0.030
0.039
F1
1.15
1.70
0.045
0.067
F2
1.15
1.70
0.045
0.067
G
4.95
5.2
0.195
0.205
G1
2.4
2.7
0.094
0.106
H
10
10.4
0.394
0.409
L2
16 typ.
0.63 typ.
L3
28.60
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
9.3
0.354
0.366
Dia
3
3.2
0.118
0.126
STPS2045C
Package information
DocID3506 Rev 10
11/15
2.3 D²PAK package information
Figure 13: D²PAK package outline
This package drawing may slightly differ from the physical package. However, all
the specified dimensions are guaranteed.
Package information
STPS2045C
12/15
DocID3506 Rev 10
Table 7: D²PAK package mechanical data
Ref.
Dimensions
Millimeters
Inches
Min.
Max.
Min.
Max.
A
4.36
4.60
0.172
0.181
A1
0.00
0.25
0.000
0.010
b
0.70
0.93
0.028
0.037
b2
1.14
1.70
0.045
0.067
c
0.38
0.69
0.015
0.027
c2
1.19
1.36
0.047
0.053
D
8.60
9.35
0.339
0.368
D1
6.90
8.00
0.272
0.311
D2
1.10
1.50
0.043
0.060
E
10.00
10.55
0.394
0.415
E1
8.10
8.90
0.319
0.346
E2
6.85
7.25
0.266
0.282
e
2.54 typ.
0.100
e1
4.88
5.28
0.190
0.205
H
15.00
15.85
0.591
0.624
J1
2.49
2.90
0.097
0.112
L
1.90
2.79
0.075
0.110
L1
1.27
1.65
0.049
0.065
L2
1.30
1.78
0.050
0.070
R
0.4 typ.
0.015
V2
0°
8°
0°
8°
STPS2045C
Package information
DocID3506 Rev 10
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Figure 14: D²PAK recommended footprint (dimensions in mm)
Ordering information
STPS2045C
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DocID3506 Rev 10
3 Ordering information
Table 8: Ordering information
Order code
Marking
Package
Weight
Base qty.
Delivery mode
STPS2045CT
STPS2045CT
TO-220AB
1.95 g
50
Tube
STPS2045CFP
STPS2045CFP
TO-220FPAB
1.9 g
50
Tube
STPS2045CG-TR
STPS2045CG
D²PAK
1.38 g
1000
Tape and reel
4 Revision history
Table 9: Document revision history
Date
Revision
Changes
05-Oct-2004
4F
Last update.
01-Dec-2004
5
Figure 16 (I²PAK Package Mechanical Data): references b1 and
b2 changed from 1.17mm to 1.70mm.
05-Feb-2010
6
Updated Table 2 (removed voltage). Updated ECOPACK
statement. Updated Table 6.: TO-220AB package mechanical
data.
05-Mar-2013
7
Updated Table 3
21-Oct-2014
8
Updated Features, Table 2, Figure 3 and D²PAK package
information. Added Figure 9. Removed fig 4,5 and 6 of version 7.
17-Aug-2015
9
Corrected XML fragment and reformatted to current standard.
14-Oct-2016
10
Remove of I²PAK package.
Updated cover page, Section 3.1: "Characteristics (curves)",
Section 3: "Characteristics", Section 4.4: "D²PAK package
information" and Table 8: "Ordering information".
STPS2045C
DocID3506 Rev 10
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