stps4045
STPS4045CP/CW

POWER SCHOTTKY RECTIFIERS
MAIN PRODUCTS CHARACTERISTICS
IF(av)
2 x 20 A
VRRM
45 V
Tj (max)
VF (max)
175 °C
0.63 V
A1
K
A2
FEATURES AND BENEFITS
VERY SMALL CONDUCTION LOSSES
NEGLIGIBLE SWITCHING LOSSES
EXTREMELY FAST SWITCHING
LOW THERMAL RESISTANCE
A2
A2
A1
K
K
A1
DESCRIPTION
SOT-93
STPS4045CP
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.
TO-247
STPS4045CW
ABSOLUTE RATINGS (limiting values, per diode)
Symbol
VRRM
IF(RMS)
Parameter
Repetitive peak reverse voltage
RMS forward current
IF(AV)
Average forward current
Tc = 150°C
δ = 0.5
IFSM
IRRM
Surge non repetitive forward current
Repetitive Peak reverse current
tp = 10 ms sinusoidal
tp = 2 µs square
F = 1kHz
IRSM
Non repetitive peak reverse current
tp = 100 µs square
Tstg
Storage temperature range
Maximum operating junction temperature *
Tj
dV/dt
* :
Per diode
Per device
Critical rate of rise of reverse voltage
Value
45
Unit
V
30
A
20
40
A
220
A
1
A
3
A
- 65 to + 175
°C
175
10000
°C
V/µs
1
dPtot
thermal runaway condition for a diode on its own heatsink
<
Rth(j−a)
dTj
June 1999 - Ed: 3B
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STPS4045CP/CW
THERMAL RESISTANCES
Symbol
Rth (j-c) Junction to case
Parameter
Rth (c)
Per diode
total
Value
1.5
0.8
Coupling
0.1
Unit
°C/W
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)
Symbol
IR *
VF *
Parameter
Tests Conditions
Min.
Typ.
Max.
Unit
200
µA
11
40
mA
0.56
0.63
V
VR = VRRM
Reverse leakage
current
Tj = 25°C
Forward voltage drop
Tj = 125°C
IF = 20 A
Tj = 25°C
IF = 40 A
Tj = 125°C
IF = 40 A
Tj = 125°C
0.94
0.7
0.83
Pulse test : * tp = 380 µs, δ < 2%
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
versus average forward current (per diode).
Fig. 2: Average current versus ambient
temperature (per diode).
PF(av)(W)
18
16
14
12
10
8
6
4
2
0
IF(av)(A)
δ = 0.2
δ = 0.5
δ = 0.1
δ = 0.05
δ= 1
T
IF(av) (A)
0
2/5
2
4
6
8
δ=tp/T
tp
10 12 14 16 18 20 22 24 26
22
20
18
16
14
12
10
8
6
4
2
0
Rth(j-a)=Rth(j-c)
Rth(j-a)=15°C/W
T
δ=tp/T
0
25
Tamb(°C)
tp
50
75
100
125
150
175
STPS4045CP/CW
Fig. 3: Nonrepetitivesurgepeakforwardcurrentversus
overloadduration(maximum values)(per diode).
Fig. 4: Relative variation of thermal transient
impedancejunction to case versus pulse duration.
Zth(j-c)/Rth(j-c)
IM(A)
200
180
160
140
120
100
80
60
IM
40
20
0
1E-3
1.0
0.8
δ = 0.5
0.6
Tc=75°C
Tc=100°C
0.4
Tc=125°C
T
δ = 0.2
0.2
δ = 0.1
t
δ=0.5
1E-2
1E-1
1E+0
Fig. 5: Reverse leakage current versus reverse
voltage applied (typical values) (per diode).
δ=tp/T
tp(s)
Single pulse
t(s)
0.0
1E-4
1E-3
1E-2
1E-1
tp
1E+0
Fig. 6: Junction capacitance versus reverse
voltage applied (typical values) (per diode).
IR(µA)
C(nF)
5E+4
5.0
Tj=150°C
1E+4
Tj=125°C
Tj=100°C
1E+3
1.0
Tj=75°C
1E+2
Tj=50°C
1E+1
1E+0
Tj=25°C
VR(V)
VR(V)
0
5
10
15
20
25
0.1
30
35
40
45
1
2
5
10
20
50
Fig. 7: Forward voltage drop versus forward
current (maximum values) (per diode).
IFM(A)
200
100
Typical values
Tj=125°C
Tj=25°C
Tj=125°C
10
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.
A
C
D
D1
E
F
F3
F4
G
H
L
L2
L3
L5
L6
O
4/5
Millimeters
Min. Typ. Max.
4.70
4.90
1.90
2.10
2.50
2.00
0.50
0.78
1.10
1.30
1.75
2.10
10.80
11.10
14.70
15.20
12.20
16.20
18.0
3.95
4.15
31.00
4.00
4.10
Inches
Min. Typ. Max.
1.185
0.193
0.075
0.083
0.098
0.078
0.020
0.031
0.043
0.051
0.069
0.083
0.425
0.437
0.279
0.598
0.480
0.638
0.709
0.156
0.163
1.220
0.157
0.161
STPS4045CP/CW
PACKAGE MECHANICAL DATA
TO-247
DIMENSIONS
REF.
V
A
H
L5
L
L2 L4
F2
F1
L1
F3
V2
F4
D
L3
F(x3)
M
G
=
Inches
Min. Typ. Max. Min.
A
4.85
5.15 0.191
D
2.20
2.60 0.086
E
0.40
0.80 0.015
F
1.00
1.40 0.039
F1
3.00
F2
2.00
F3
2.00
2.40 0.078
F4
3.00
3.40 0.118
G
10.90
H 15.45
15.75 0.608
L
19.85
20.15 0.781
L1
3.70
4.30 0.145
L2
18.50
L3 14.20
14.80 0.559
L4
34.60
L5
5.50
M
2.00
3.00 0.078
V
5°
V2
60°
Dia. 3.55
3.65 0.139
Dia.
V
Millimeters
Typ. Max.
0.203
0.102
0.031
0.055
0.118
0.078
0.094
0.133
0.429
0.620
0.793
0.169
0.728
0.582
1.362
0.216
0.118
5°
60°
0.143
E
=
Type
Marking
Package
Weight
Base qty
Delivery mode
STPS4045CP
STPS4045CP
SOT-93
3.97 g.
30
Tube
STPS4045CW
STPS4045CW
TO-247
4.46 g.
30
Tube
Cooling method: by conduction (C)
Recommended torque value: 0.8 N.m
Maximum torque value: 1.0 N.m.
Epoxy meets UL94,V0
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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 approval of STMicroelectronics.
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 1999 STMicroelectronics - Printed in Italy - All rights reserved.
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