Page 1
POWER SCHOTTKY RECTIFIERS
MAINPRODUCTSCHARACTERISTICS
I
F(av)
V
RRM
Tj (max) 175 °C
(max) 0.63 V
V
F
FEATURESAND BENEFITS
VERYSMALLCONDUCTION LOSSES
NEGLIGIBLESWITCHINGLOSSES
EXTREMELYFAST SWITCHING
LOWTHERMALRESISTANCE
DESCRIPTION
Dual center tap Schottky rectifier suited for
switchmodepowersupply and high frequencyDC
toDCconverters.
Packagedeither in SOT-93or TO-247 this device
is intended for usein low voltage,highfrequency
inverters, free wheeling and polarity protection
applications.
2 x 20 A
45 V
STPS4045CP/CW
A1
SOT-93
STPS4045CP
A1
K
A2
A2
K
A2
K
A1
TO-247
STPS4045CW
ABSOLUTE RATINGS
(limitingvalues,per diode)
Symbol Parameter Value Unit
V
RRM
I
F(RMS)
I
F(AV)
I
FSM
I
RRM
Repetitivepeak reversevoltage
RMSforwardcurrent
Averageforwardcurrent Tc= 150°C
δ = 0.5
Per diode
Perdevice
Surgenonrepetitiveforwardcurrent tp = 10 ms sinusoidal
RepetitivePeak reverse current tp = 2 µs square
45 V
30 A
20
40
220 A
1A
F = 1kHz
I
RSM
Tstg
Tj
dV/dt
dPtot
*:
dTj
June 1999 - Ed: 3B
Nonrepetitivepeakreversecurrent tp = 100 µs square
Storagetemperaturerange
Maximumoperating junctiontemperature*
Criticalrateof riseof reverse voltage
<
Rth(j−a
1
thermal runawayconditionfor adiode on its own heatsink
)
3A
- 65 to +175 °C
175 °C
10000 V/µs
A
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Page 2
STPS4045CP/CW
THERMAL RESISTANCES
Symbol Parameter Value Unit
R
R
th (j-c)
th (c)
Junctionto case Perdiode
total
Coupling
1.5
0.8
0.1
Whenthe diodes1 and2 areused simultaneously:
(diode1) = P(diode1)x R
∆ T
J
(Perdiode)+ P(diode2) x R
th(j-c)
th(c)
STATICELECTRICAL CHARACTERISTICS(per diode)
Symbol Parameter TestsConditions Min. Typ. Max. Unit
*
I
R
V
F
Reverseleakage
current
*
Forward voltagedrop Tj =125°CI
Tj = 25°CV
Tj = 125°C
Tj = 25°CI
Tj = 125°CI
R=VRRM
=20A
F
=40A
F
=40A
F
11 40 mA
0.56 0.63 V
0.7 0.83
200 µA
0.94
°C/W
Pulsetest : *tp= 380 µs,
δ<2%
To evaluatethe conductionlossesuse the followingequation :
P = 0.46x I
Fig. 1: Average forward power dissipation
versus averageforward current(per diode).
PF(av)(W)
18
16
14
12
10
8
6
4
2
0
δ = 0.05
02468101214161820222426
F(AV)
δ = 0.1
+0.0085I
δ = 0.2
IF(av)(A)
F2(RMS)
δ= 0.5
δ
=tp/T
δ =1
Fig. 2: Average current versus ambient
tempe rature (p er d iode ).
IF(av)(A)
22
20
18
16
14
12
10
T
tp
8
6
4
2
0
0 25 50 75 100 125 150 175
δ
=tp/T
Rth(j-a)=Rth(j-c)
Rth(j-a)=15°C/W
T
tp
Tamb(°C)
2/5
Page 3
STPS4045CP/CW
Fig.3:Nonrepetiti v esurgepeakfor w ardcurre ntvers us
overloadduration(maximum values)(perdiode).
IM(A)
200
180
160
140
120
100
80
60
IM
40
20
0
1E-3 1E-2 1E-1 1E+0
δ=0.5
t
t(s)
Tc=75°C
Tc=100°C
Tc=125°C
Fig. 5: Reverse leakage current versus reverse
voltageapplied (typicalvalues) (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
Fig. 4: Relative variation of thermal transient
impedancejunctiontocaseversuspulseduration.
Zth(j-c)/Rth(j-c)
1.0
0.8
δ = 0.5
0.6
0.4
δ
=tp/T
T
tp
δ = 0.2
δ= 0.1
0.2
Single pulse
0.0
1E-4 1E-3 1E-2 1E-1 1E+0
tp(s)
Fig. 6: Junction capacitance versus reverse
voltageapplied(typical values) (per diode).
C(nF)
5.0
1.0
1E+1
1E+0
0 5 10 15 20 25 30 35 40 45
Tj=25°C
VR(V)
Fig. 7: Forward voltage drop versus forward
current(maximumvalues)(per diode).
IFM(A)
200
100
10
1
0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0
Typicalvalues
Tj=125°C
Tj=25°C
Tj=125°C
VFM(V)
0.1
12 51020 50
3/5
VR(V)
Page 4
STPS4045CP/CW
PACKAGEMECHANICAL 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 15.20 0.279 0.598
L 12.20 0.480
L2 16.20 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
4/5
Page 5
PACKAGEMECHANICALDATA
TO-247
V
V
H
L5
L
F2
F4
L1
F3
L3
F1
V2
F(x3)
G
==
Dia.
L4L2
D
ME
A
STPS4045CP/CW
DIMENSIONS
REF.
A 4.85 5.15 0.191 0.203
D 2.20 2.60 0.086 0.102
E 0.40 0.80 0.015 0.031
F 1.00 1.40 0.039 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
V5° 5°
V2 60° 60°
Dia. 3.55 3.65 0.139 0.143
Millimeters Inches
Min. Typ. Max. Min. Typ. Max.
Type Marking Package Weight Base qty Deliverymode
STPS4045CP STPS4045CP SOT-93 3.97 g. 30 Tube
STPS4045CW STPS4045CW TO-247 4.46 g. 30 Tube
Coolingmethod: byconduction(C)
Recommendedtorque value:0.8 N.m
Maximumtorquevalue: 1.0 N.m.
Epoxymeets UL94,V0
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