STPS40L15CW/CT
November 1999 - Ed: 4A
LOW DROP OR-ing POWER SCHOTTKY DIODE
Dual center tap schottky rectifier packaged in
TO-220AB and TO-247, this device is especially
intended for use as OR-ing diode in fault tolerant
power supply equipments.
DESCRIPTION
VERY LOW FORWARD VOLTAGE DROP FOR
LESS POWER DISSIPATION AND REDUCED
HEATSINK SIZE
REVERSE VOLTAGE SUITED TO OR-ing OF
3V, 5V and 12V RAILS
FEATURES AND BENEFITS
Symbol
Parameter
Value
Unit
V
RRM
Repetitive peak reverse voltage
15
V
I
F(RMS)
RMS forward current
30
A
I
F(AV)
Average forward current
Tcase = 140
C
= 1
Total
40
A
Per diode
20
I
FSM
Surge non repetitive forward current
tp = 10 ms Sinusoidal
310
A
I
RRM
Peak repetitive reverse current
tp = 2
s F = 1kHz
2
A
I
RSM
Non repetitive peak reverse current
tp = 100
s
3
A
T
stg
Storage temperature range
- 65 to + 150
C
T
j
Maximum operating junction temperature *
150
C
dV/dt
Critical rate of rise of reverse voltage
10000
V/
s
ABSOLUTE RATINGS (limiting values, per diode)
A1
K
A2
I
F(AV)
2 x 20 A
V
RRM
15 V
Tj (max)
150C
V
F
(max)
0.33 V
MAJOR PRODUCT CHARACTERISTICS
TO-247
STPS40L15CW
A1
K
A2
* :
dPtot
dTj
<
1
Rth
(
j
-
a
)
thermal runaway condition for a diode on its own heatsink
A1
K
A2
TO-220AB
STPS40L15CT
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Symbol
Parameter
Tests Conditions
Min.
Typ.
Max.
Unit
I
R
*
Reverse leakage
current
Tj = 25
C
V
R
= V
RRM
6
mA
Tj = 100
C
200
500
V
F
*
Forward voltage drop
Tj = 25
C
I
F
= 19 A
0.41
V
Tj = 25
C
I
F
= 40 A
0.52
Tj = 125C
I
F
= 19 A
0.28
0.33
Tj = 125C
I
F
= 40 A
0.42
0.50
Pulse test : * tp = 380
s,
< 2%
To evaluate the conduction losses use the following equation :
P = 0.18 x I
F(AV)
+ 0.008 I
F
2
(RMS)
STATIC ELECTRICAL CHARACTERISTICS (Per diode)
Symbol
Parameter
Value
Unit
R
th
(j-c)
Junction to case
Per diode
1.6
C/W
Total
0.85
R
th (c)
Coupling
0.1
C/W
THERMAL RESISTANCES
0
2
4
6
8
10
12
14
16
18
20
22
0
1
2
3
4
5
6
7
8
PF(av)(W)
IF(av) (A)
= 1
= 0.5
= 0.2
= 0.1
= 0.05
T
=tp/T
tp
Fig. 1: Average forward power dissipation versus
average forward current (per diode).
0
25
50
75
100
125
150
0
2
4
6
8
10
12
14
16
18
20
22
Tamb(C)
IF(av)(A)
Rth(j-a)=15C/W
Rth(j-a)=Rth(j-c)
T
=tp/T
tp
Fig. 2: Average forward current versus ambient
temperature (
=1, per diode).
STPS40L15CW/CT
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1.0E-4
1.0E-3
1.0E-2
1.0E-1
1.0E+0
0.0
0.2
0.4
0.6
0.8
1.0
tp (s)
Zth(j-c)/Rth(j-c)
T
=tp/T
tp
Single pulse
= 0.5
= 0.2
= 0.1
Fig. 4: Relative variation of thermal impedance
junction to case versus pulse duration (per diode).
0
2
4
6
8
10
12
14
16
1E-1
1E+0
1E+1
1E+2
5E+2
IR(mA)
Tj=100C
Tj=25C
VR(V)
Fig. 5: Reverse leakage current versus reverse
voltage applied (typical values per diode).
1
2
5
10
20
0.1
1.0
5.0
VR(V)
C(nF)
F=1MHz
Tj=25C
Fig. 6: Junction capacitance versus reverse
voltage applied (typical values per diode).
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
200.0
VFM(V)
IFM(A)
Tj=150C
Tj=25C
Tj=125C
Tj=75C
Fig. 7: Forward voltage drop versus forward
current (typical values per diode).
0
0.2
0.4
0.6
0.8
1
1.2
1.4
1.6
1.8
1
10
100
200
IFM(A)
Tj=100C
VFM(V)
Fig. 8: Forward voltage drop versus forward
current (typical maximum per diode).
1E-3
1E-2
1E-1
1E+0
0
50
100
150
200
250
t(s)
IM(A)
Tc=50C
Tc=75C
Tc=110C
IM
t
=0.5
Fig. 3: Non repetitive surge peak forward current
versus overload duration (maximum values per
diode).
STPS40L15CW/CT
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PACKAGE MECHANICAL DATA
TO-220AB
A
C
D
L7
Dia
L5
L6
L9
L4
F
H2
G
G1
L2
F2
F1
E
M
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
F2
1.14
1.70
0.044
0.066
G
4.95
5.15
0.194
0.202
G1
2.40
2.70
0.094
0.106
H2
10
10.40
0.393
0.409
L2
16.4 typ.
0.645 typ.
L4
13
14
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.
3.75
3.85
0.147
0.151
Cooling method: C
Recommended torque value: 0.55 m.N
Maximum torque value: 0.70 m.N
STPS40L15CW/CT
4/5
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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.
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proval of STMicroelectronics.
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PACKAGE MECHANICAL DATA
TO-247
F2
F1
V2
L4
L2
L1
L3
D
L
L5
M
E
H
V
V
A
Dia.
F3
F4
G
= =
F(x3)
REF.
DIMENSIONS
Millimeters
Inches
Min.
Typ. Max. Min.
Typ. Max.
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
V
5
5
V2
60
60
Dia.
3.55
3.65 0.139
0.143
Ordering type
Marking
Package
Weight
Base qty
Delivery mode
STPS40L15CW STPS40L15CW
TO-247
4.4 g.
30
Tube
STPS40L15CT
STPS40L15CT
TO-220AB
2g
50
Tube
Epoxy meets UL94,V0
Cooling method: C
Recommended torque value: 0.8 m.N
Maximum torque value: 1.0 m.N
STPS40L15CW/CT
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