Page 1
®
STPS2545CT/CG/CFP
POWER SCHOTTKY RECTIFIER
MAIN PRODUCT CHARACTERISTICS
I
F(AV)
V
RRM
2 x 12.5 A
45 V
Tj (max) 175 °C
V
(max) 0.57V
F
FEATURES AND BENEFITS
VERY SMALL CONDUCTION LOSSES
■
NEGLIGIBLE SWITCHING LOSSES
■
EXTREMELY FAST SWITCHING
■
LOW THERMAL RESISTANCE
■
AVALANCHE CAPABILITY SPECIFIED
■
DESCRIPTION
Dual center tap Schottky rectifier suited for
Switch Mode Power Supplies and high frequency DC to DC converters.
This device is especially intended for use in low
voltage, high frequency inverters, free wheeling
and polarity protection applications.
ABSOLUTE RATINGS (limiting values, per diode)
A1
A2
TO-220AB
STPS2545CT
TO-220FPAB
STPS2545CFP
A1
A1
K
A2
K
K
A2
A1
D2PAK
STPS2545CG
A2
K
Symbol Parameter Value Unit
V
RRM
I
F(RMS)
I
F(AV)
Repetitive peak reverse voltage 45 V
RMS forward current 30 A
Average forward
current δ = 0.5
TO-220AB
D2PAK
Tc = 160°C Per diode 12.5 A
TO-220FPAB Tc = 140°C Per device 25
I
I
I
P
T
FSM
RRM
RSM
ARM
stg
Surge non repetitive forward current tp = 10 ms sinusoidal 200 A
Repetitive peak reverse current tp=2µssquare F = 1kHz 1 A
Non repetitive peak reverse current tp = 100 µs square 2 A
Repetitive peak avalanche power tp = 1µs Tj = 25°C 4800 W
Storage temperature range -65 to+175 °C
Tj Maximum operating junction temperature * 175 °C
dV/dt Critical rate of rise of reverse voltage 10000 V/µs
dPtot
* :
<
dTj Rth j a
July 2003 - Ed: 2A
thermal runaway condition for a diode on its own heatsink
−1()
1/6
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STPS2545CT/CG/CFP
THERMAL RESISTANCES
Symbol Parameter Value Unit
R
th (j-c)
R
th (c)
When the diodes 1 and 2 are used simultaneously :
∆ Tj(diode 1) = P(diode1) x R
STATIC ELECTRICAL CHARACTERISTICS (per diode)
Symbol Parameter Tests Conditions Min. Typ. Max. Unit
I
R
V
Pulse test : * tp = 380 µs, δ <2%
To evaluate the conduction losses use the following equation :
P = 0.42 x I
Fig.1: Conduction losses versusaverage current.
P (W)F(AV)
10
9
8
7
6
5
4
3
2
1
0
0.0 2.5 5.0 7.5 10.0 12.5 15.0
Junction to ambient TO-220AB / D2PAK Per diode 1.6 °C/W
TO-220FPAB 4
TO-220AB / D
2
PAK Total 1.1 °C/W
TO-220FPAB 3.5
TO-220AB / D2PAK
Coupling
0.6 °C/W
TO-220FPAB 3
(Per diode) + P(diode 2) x R
th(j-c)
* Reverse leakage Current Tj = 25°C VR=V
th(c)
RRM
125 µA
Tj = 125°C 9 25 mA
* Forward Voltage drop Tj = 125°C IF= 12.5 A 0.50 0.57 V
F
F(AV)
+ 0.012 x I
Tj = 25°C I
Tj = 125°C I
F2(RMS)
= 25 A 0.84
F
= 25 A 0.65 0.72
F
Fig. 2: Average forward current versus ambient
temperature (δ=0.5).
I (A)F(AV)
δ = 0.05
δ = 0.1
I (A)F(AV)
δ = 0.2
δ = 0.5
δ
=tp/T
T
δ = 1
14
12
10
8
6
4
2
tp
δ
0
0 25 50 75 100 125 150 175
=tp/T
Rth
=Rth
(j-a)
(j-c)
Rth
=50°C/W
(j-a)
T
tp
T (°C)amb
TO-220AB/D²PAK
Fig. 3: Normalized avalanche power derating
versus pulse duration.
P(t)
ARM p
P (1µs)
ARM
1
0.1
0.01
t (µs)
0.001
0.10.01 1
2/6
p
10 100 1000
Fig. 4: Normalized avalanche power derating
versus junction temperature.
P(t)
ARM p
P (25°C)
ARM
1.2
1
0.8
0.6
0.4
0.2
0
0 25 50 75 100 125 150
T (°C)
j
Page 3
STPS2545CT/CG/CFP
Fig. 5-1: Non repetitive surge peak forward current
versus overload duration (maximum values)
(TO-220AB, D²PAK).
I (A)M
200
180
160
140
120
100
80
60
40
IM
20
0
1.E-03 1.E-02 1.E-01 1.E+00
δ=0.5
t
t(s)
TC=25°C
TC=75°C
TC=125°C
Fig. 6-1: Relative variation of thermal impedance
junction to case versus pulse duration (TO-220AB,
2
PAK).
D
Zth(j-c) / Rth(j-c)
1.0
0.9
0.8
0.7
δ = 0.5
0.6
0.5
0.4
δ = 0.2
δ = 0.1
0.3
0.2
Single pulse
0.1
0.0
1.E-03 1.E-02 1.E-01 1.E+00
t (s)P
δ
=tp/T
T
tp
Fig. 5-2: Non repetitive surge peak forward current
versus overload duration (maximum values)
(TO-220FPAB).
I (A)M
120
100
80
60
40
IM
20
0
1.E-03 1.E-02 1.E-01 1.E+00
δ=0.5
t
t(s)
TC=25°C
TC=75°C
TC=125°C
Fig. 6-2: Relative variation of thermal impedance
junctionto case versuspulse duration (TO-220FP AB).
Zth(j-c) / Rth(j-c)
1.0
0.9
0.8
0.7
0.6
δ = 0.5
0.5
0.4
δ = 0.2
0.3
δ = 0.1
0.2
0.1
Single pulse
0.0
1.E-03 1.E-02 1.E-01 1.E+00 1.E+01
t (s)P
δ
=tp/T
T
tp
Fig. 7: Reverse leakage current versus reverse
voltage applied (typicalvalues).
I (mA)R
1.E+02
1.E+01
1.E+00
1.E-01
1.E-02
1.E-03
0 5 10 15 20 25 30 35 40 45
Tj=150°C
Tj=125°C
Tj=100°C
Tj=75°C
Tj=50°C
Tj=25°C
V (V)R
Fig. 8: Junction capacitance versus reverse volt-
age applied (typical values).
C(nF)
10.0
1.0
V (V)R
0.1
1 10 100
F=1MHz
V
osc
T
=30mV
=25°C
j
3/6
Page 4
STPS2545CT/CG/CFP
Fig. 9: Forward voltage drop versus forward
current.
I (A)FM
100
Tj=125°C
Tj=125°C
(Maximum values)
(Maximum values)
Tj=125°C
Tj=125°C
(Typical values)
(Typical values)
10
1
0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4
V (V)FM
Tj=25°C
(Maximum values)
PACKAGE MECHANICAL DATA
TO-220AB
A
C
D
M
L2
F2
F1
H2
Dia
L5
L6
L9
L4
F
G1
G
Fig. 10: Thermal resistance junction to ambient
versus copper surface under tab (epoxy printed
board FR4, Cu = 35µm).
Rth(j-a)(°C/W)
80
70
60
50
40
30
20
10
0
0 5 10 15 20 25 30 35 40
S(cm²)
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
L7
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.
E
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.
4/6
Page 5
PACKAGE MECHANICAL DATA
2
PAK
D
E
L2
L
L3
A1
B2
B
G
* FLAT ZONE NO LESS THAN 2mm
C2
STPS2545CT/CG/CFP
REF. DIMENSIONS
Millimeters Inches
A
A 4.40 4.60 0.173 0.181
A1 2.49 2.69 0.098 0.106
A2 0.03 0.23 0.001 0.009
D
B 0.70 0.93 0.027 0.037
B2 1.14 1.70 0.045 0.067
C 0.45 0.60 0.017 0.024
C2 1.23 1.36 0.048 0.054
C
R
D 8.95 9.35 0.352 0.368
E 10.00 10.40 0.393 0.409
G 4.88 5.28 0.192 0.208
A2
L 15.00 15.85 0.590 0.624
L2 1.27 1.40 0.050 0.055
M
*
V2
L3 1.40 1.75 0.055 0.069
M 2.40 3.20 0.094 0.126
R 0.40 typ. 0.016 typ.
Min. Max. Min. Max.
FOOTPRINT
10.30
16.90
5.08
1.30
3.70
8.90
5/6
Page 6
STPS2545CT/CG/CFP
PACKAGE MECHANICAL DATA
TO-220FPAB
H
Dia
L6
L2
L3
L5
D
L4
G1
F1
F2
F
REF. DIMENSIONS
Millimeters Inches
Min. Max. Min. Max.
A
B
A 4.4 4.6 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 0.027
F 0.75 1 0.030 0.039
F1 1.15 1.70 0.045 0.067
L7
F2 1.15 1.70 0.045 0.067
G 4.95 5.20 0.195 0.205
G1 2.4 2.7 0.094 0.106
H 10 10.4 0.393 0.409
L2 16 Typ. 0.63 Typ.
L3 28.6 30.6 1.126 1.205
L4 9.8 10.6 0.386 0.417
E
L5 2.9 3.6 0.114 0.142
G
L6 15.9 16.4 0.626 0.646
L7 9.00 9.30 0.354 0.366
Dia. 3.00 3.20 0.118 0.126
Ordering type Marking Package Weight Base qty Delivery mode
STPS2545CT STPS2545CT TO-220AB 2.20 g 50 Tube
STPS2545CFP STPS2545CFP TO-220FPAB 2.0 g 50 Tube
STPS2545CG STPS2545CG D
STPS2545CG-TR STPS2545CG D
■
EPOXY MEETS UL94,V0
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2
PAK 1.48 g 50 Tube
2
PAK 1.48 g 1000 Tape& reel
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