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® STPS4045CP/CW
POWER SCHOTTKY RECTIFIERS
MAIN PRODUCTS CHARACTERISTICS
IF(av)
VRRM
Tj (max)
VF (max)
2 x 20 A
45 V
175 °C
0.63 V
A1
K
A2
FEATURES AND BENEFITS
VERY SMALL CONDUCTION LOSSES
NEGLIGIBLE SWITCHING LOSSES
EXTREMELY FAST SWITCHING
LOW THERMAL RESISTANCE
DESCRIPTION
Dual center tap Schottky rectifier suited for
switchmode power supply and high frequency DC
to DC converters.
Packaged either in SOT-93 or TO-247 this device
is intended for use in low voltage, high frequency
inverters, free wheeling and polarity protection
applications.
A2
K
A1
SOT-93
STPS4045CP
A2
K
A1
TO-247
STPS4045CW
ABSOLUTE RATINGS (limiting values, per diode)
Symbol
VRRM
IF( RMS)
IF(AV)
IFSM
IRRM
IRSM
Tstg
Tj
dV/dt
Parameter
Repetitive peak reverse voltage
RMS forward current
Average forward current
Tc = 150°C Per diode
δ = 0.5
Per device
Surge non repetitive forward current tp = 10 ms sinusoidal
Repetitive Peak reverse current
tp = 2 µs square
F = 1kHz
Non repetitive peak reverse current tp = 100 µs square
Storage temperature range
Maximum operating junction temperature *
Critical rate of rise of reverse voltage
Value
45
30
20
40
220
1
3
- 65 to + 175
175
10000
Unit
V
A
A
A
A
A
°C
°C
V/µs
*
:
dPtot
dTj
<
1
Rth(ja)
thermal runaway condition for a diode on its own heatsink
June 1999 - Ed: 3B
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STPS4045CP/CW
THERMAL RESISTANCES
Symbol
Rth (j-c) Junction to case
Rth (c)
Parameter
Per diode
total
Coupling
When the diodes 1 and 2 are used simultaneously :
TJ(diode 1) = P(diode1) x Rth(j-c) (Per diode) + P(diode 2) x Rth(c)
STATIC ELECTRICAL CHARACTERISTICS (per diode)
Value
1.5
0.8
0.1
Unit
°C/W
Symbol
IR *
VF *
Parameter
Reverse leakage
current
Forward voltage drop
Tests Conditions
Tj = 25°C
VR = VRRM
Tj = 125°C
Tj = 125°C
IF = 20 A
Tj = 25°C
Tj = 125°C
IF = 40 A
IF = 40 A
Pulse test : * tp = 380 µs, δ < 2%
Min.
Typ.
11
0.56
0.7
Max.
200
40
0.63
0.94
0.83
Unit
µA
mA
V
To evaluate the conduction losses use the following equation :
P = 0.46 x IF(AV) + 0.0085 IF2(RMS)
Fig. 1: Average forward power dissipation Fig. 2: Average current versus ambient
versus average forward current (per diode).
temperature (per diode).
PF(av)(W)
18
16
δ = 0.2
δ = 0.5
14 δ = 0.1
12 δ = 0.05
10
δ= 1
8
6
T
4
2
IF(av) (A)
δ=tp/T
tp
0
0 2 4 6 8 10 12 14 16 18 20 22 24 26
IF(av)(A)
22
20
18
16
14
12
10
8
6
4
2
0
0
T
δ=tp/T
25
tp
50
Rth(j-a)=Rth(j-c)
Rth(j-a)=15°C/W
Tamb(°C)
75 100
125
150
175
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STPS4045CP/CW
Fig. 3: Nonrepetitivesurgepeakforwardcurrentversus Fig. 4: Relative variation of thermal transient
overloadduration(maximum values)(per diode).
impedancejunction to case versus pulse duration.
IM(A)
200
180
160
140
120
100
80
60
40 IM
20
0
1E-3
t
δ=0.5
t(s)
1E-2
1E-1
Tc=75°C
Tc=100°C
Tc=125°C
1E+0
Zth(j-c)/Rth(j-c)
1.0
0.8
0.6 δ = 0.5
0.4
0.2
δ = 0.2
δ = 0.1
Single pulse
0.0
1E-4
1E-3
tp(s)
1E-2
T
δ=tp/T
1E-1
tp
1E+0
Fig. 5: Reverse leakage current versus reverse Fig. 6: Junction capacitance versus reverse
voltage applied (typical values) (per diode).
voltage applied (typical values) (per diode).
IR(µA)
5E+4
1E+4
1E+3
1E+2
Tj=150°C
Tj=125°C
Tj=100°C
Tj=75°C
Tj=50°C
1E+1
1E+0
0
Tj=25°C
VR(V)
5 10 15 20 25 30 35 40 45
C(nF)
5.0
1.0
0.1
1
2
VR(V)
5 10
20
50
Fig. 7: Forward voltage drop versus forward
current (maximum values) (per diode).
IFM(A)
200
100
10
Typical values
Tj=125°C
Tj=25°C
Tj=125°C
VFM(V)
1
0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0
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STPS4045CP/CW
PACKAGE MECHANICAL DATA
SOT-93
DIMENSIONS
REF. Millimeters
Inches
Min. Typ. Max. Min. Typ. Max.
A 4.70
4.90 1.185
0.193
C 1.90
2.10 0.075
0.083
D 2.50
0.098
D1 2.00
0.078
E 0.50
0.78 0.020
0.031
F 1.10
1.30 0.043
0.051
F3 1.75
0.069
F4 2.10
0.083
G 10.80
11.10 0.425
0.437
H 14.70
L
L2
15.20 0.279
12.20
16.20
0.598
0.480
0.638
L3 18.0
0.709
L5 3.95
4.15 0.156
0.163
L6 31.00
1.220
O 4.00
4.10 0.157
0.161
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PACKAGE MECHANICAL DATA
TO-247
V
V
Dia.
A
H
L5
L
L2 L4
F1
V2
F(x3)
G
==
F2 L1
F3
F4 L3
D
M
E
STPS4045CP/CW
DIMENSIONS
REF. Millimeters
Inches
Min. Typ. Max. Min. Typ. Max.
A 4.85
D 2.20
E 0.40
F 1.00
5.15 0.191
2.60 0.086
0.80 0.015
1.40 0.039
0.203
0.102
0.031
0.055
F1 3.00
0.118
F2 2.00
0.078
F3 2.00
2.40 0.078
0.094
F4 3.00
3.40 0.118
0.133
G 10.90
0.429
H 15.45
15.75 0.608
0.620
L 19.85
20.15 0.781
0.793
L1 3.70
4.30 0.145
0.169
L2 18.50
0.728
L3 14.20
14.80 0.559
0.582
L4 34.60
1.362
L5 5.50
0.216
M 2.00
3.00 0.078
0.118
V 5°
5°
V2 60°
60°
Dia. 3.55
3.65 0.139
0.143
Type
Marking
Package
STPS4045CP STPS4045CP
SOT-93
STPS4045CW STPS4045CW TO-247
Cooling method: by conduction (C)
Recommended torque value: 0.8 N.m
Maximum torque value: 1.0 N.m.
Epoxy meets UL94,V0
Weight
3.97 g.
4.46 g.
Base qty
30
30
Delivery mode
Tube
Tube
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use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by
implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject to
change without notice. This publication supersedes and replaces all information previously supplied.
STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written ap-
proval of STMicroelectronics.
The ST logo is a registered trademark of STMicroelectronics
© 1999 STMicroelectronics - Printed in Italy - All rights reserved.
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