STPS30120C
Power Schottky rectifier
Features
■ High junction temperature capability
■ Avalanche rated
■ Low leakage current
■ Good trade-off between leakage current and
forward voltage drop
Description
Dual center tap Schottky rectifier suited for high
frequency switch mode power supply.
Packaged in TO-220AB, TO-220AB narrow leads,
2
and I
PAK, this device is intended to be used in
notebook and LCD adaptors, desktop SMPS,
providing in these applications a margin between
the remaining voltages applied on the diode and
the voltage capability of the diode.
Figure 1. Electrical characteristics
2 x I
I
"Forward"
O
I
F
I
O
I
R
V
V
F(Io)
To
V
I
V
RRM
V
V
R
AR
"Reverse"
(a)
X
X
V
V
V
F(2xIo)
F
A1
A2
K
A2
K
A1
TO-220AB
STPS30120CT
K
A1
TO-220AB narrow leads
STPS30120CTN
Table 1. Device summary
Symbol Value
I
2 x 15 A
F(AV)
120 V
V
RRM
T
j(max)
0.57 V
V
F(typ)
K
K
A1
2
I
PA K
STPS30120CR
A2
K
175 °C
A2
K
I
AR
a. V
ARM
and I
must respect the reverse safe
ARM
operating area defined in Figure 10. V
pulse measurements (t
are static characteristics.
< 1 µs). VR, IR, V
p
and IAR are
AR
and VF,
RRM
January 2012 Doc ID 11213 Rev 4 1/9
www.st.com
9
Characteristics STPS30120C
1 Characteristics
Table 2. Absolute ratings (limiting values, per diode)
Symbol Parameter Value Unit
V
I
F(RMS)
I
F(AV)
I
FSM
P
V
ARM
V
ASM
T
1. Refer to Figure 10
2. condition to avoid thermal runaway for a diode on its own heatsink
Table 3. Thermal parameters
Repetitive peak reverse voltage 120 V
RRM
Forward rms current 30 A
Average forward
current
δ = 0.5
= 145 °C
T
c
Per diode
Per device
Surge non repetitive forward current tp = 10 ms sinusoidal 180 A
Repetitive peak avalanche power tp = 1 µs Tj = 25 °C 6700 W
ARM
Maximum repetitive
(1)
peak avalanche voltage
Maximum single pulse
(1)
peak avalanche voltage
Storage temperature range -65 to + 175 °C
stg
T
Maximum operating junction temperature
j
<
Rth(j-a)
1
dPtot
dTj
= 1 µs, Tj < 150 °C, IAR < 13.4 A 150 V
t
p
= 1 µs, Tj < 150 °C, IAR < 13.4 A 150 V
t
p
(2)
15
30
175 °C
Symbol Parameter Value Unit
R
R
th(j-c)
th(c)
Junction to case
Per diode
To ta l
Coupling Total 0.3 °C/W
2.2
1.3
°C/W
A
When the diodes 1 and 2 are used simultaneously :
T
(diode 1) = P(diode 1) x R
j
2/9 Doc ID 11213 Rev 4
(per diode) + P(diode 2) x R
th(j-c)
th(c)
STPS30120C Characteristics
Table 4. Static electrical characteristics (per diode)
Symbol Test conditions Min. Typ. Max. Unit
(1)
I
R
V
Reverse leakage current
(2)
Forward voltage drop
F
Tj = 25 °C
VR = V
= 125 °C 2.5 7.5 mA
T
j
T
= 25 °C
j
= 125 °C 0.57 0.61
T
j
= 25 °C
T
j
Tj = 125 °C 0.7 0.74
T
= 25 °C
j
= 125 °C 0.83 0.89
T
j
RRM
= 5 A
I
F
= 15 A
I
F
IF = 30 A
1. Pulse test : tp = 5 ms, δ < 2%
2. Pulse test : tp = 380 μs, δ < 2%
To evaluate the maximum conduction losses use the following equation :
P = 0.59 x I
Figure 2. Average forward power
P (W)
F(AV)
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
0 2 4 6 8 10 12 14 16 18
Figure 4. Normalized avalanche power
+ 0.01 I
F(AV)
F2(RMS)
dissipation versus average forward
current (per diode)
δ = 0.2
δ = 0.1
δ = 0.05
I (A)
F(AV)
δ = 0.5
δ
=tp/T
δ = 1
T
tp
derating versus pulse duration
Figure 3. Average forward current versus
ambient temperature
(
δ = 0.5, per diode)
I (A)
F(AV)
18
16
14
12
10
8
6
δ
=tp/T
T
tp
4
2
0
0 25 50 75 100 125 150 175
Figure 5. Normalized avalanche power
derating versus junction
temperature
P(tp)
P (1µs)
ARM
1
ARM
P (25 °C)
1.2
1
P(T)
ARM j
ARM
R=R
th(j-a) th(j-c)
R =15°C/W
th(j-a)
T (°C)
amb
15 µA
0.74
0.92
V
1.02
0.1
0.01
0.001
0.10.01 1
10 100
0.8
0.6
0.4
0.2
T (°C)
t (µs)
p
1000
0
25 50 75 100 125
j
150
Doc ID 11213 Rev 4 3/9
Characteristics STPS30120C
Figure 6. Relative variation of thermal
impedance junction to ambient
versus pulse duration
Z/R
th(j-c) th(j-c)
1.0
0.9
0.8
0.7
0.6
0.5
0.4
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
T
=tp/T
Figure 8. Junction capacitance versus
reverse voltage applied
(typical values, per diode)
C(pF)
1000
100
F=1MHz
V =30mV
OSC RMS
T =25°C
j
Figure 7. Reverse leakage current versus
reverse voltage applied
(typical values, per diode)
I (mA)
R
1.E+02
1.E+01
1.E+00
1.E-01
1.E-02
1.E-03
tp
1.E-04
1.E-05
0 10 20 30 40 50 60 70 80 90 100 110 120
T=150°C
j
T=125°C
j
T=100°C
j
T=75°C
j
T=50°C
j
T=25°C
j
V (V)
R
Figure 9. Forward voltage drop versus
forward current (per diode)
I (A)
FM
100
T=125°C
j
(maximum values)
T=125°C
j
(typical values)
10
T=25°C
j
(maximum values)
V (V)
10
1 10 100
R
1
0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6
Figure 10. Reverse safe operating area (tp < 1 µs and Tj < 150 °C)
I (A)
arm
18
17
16
15
14
13
12
V (V)
11
120
130
140
arm
150
160
170
V (V)
FM
4/9 Doc ID 11213 Rev 4
STPS30120C Package information
2 Package information
● Epoxy meets UL94, V0
● Cooling method: by conduction (C)
● Recommended torque value: 0.4 to 0.6 N·m
In order to meet environmental requirements, ST offers these devices in different grades of
ECOPACK
specifications, grade definitions and product status are available at: www.st.com
ECOPACK
Table 5. TO-220AB dimensions
®
packages, depending on their level of environmental compliance. ECOPACK®
®
is an ST trademark.
.
Dimensions
Ref.
Millimeters Inches
Min. Max. Min. Max.
A 4.40 4.60 0.173 0.181
H2
Dia
A
C
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
L2
F2
F1
L5
L6
L9
L4
F
G1
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
D
G1 2.40 2.70 0.094 0.106
H2 10 10.40 0.393 0.409
L2 16.4 typ. 0.645 typ.
M
E
L4 13 14 0.511 0.551
L5 2.65 2.95 0.104 0.116
G
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
Doc ID 11213 Rev 4 5/9
Package information STPS30120C
Table 6. TO-220AB narrow leads dimensions
Dimensions
L20
b1(x3)
1
E
23
e
e1
L1
b (x3)
Ref.
Millimeters Inches
Min. Typ. Max. Min. Typ. Max.
A 4.40 4.60 0.17 0.18
b 0.61 0.88 0.024 0.034
P
Q
D
L30
L
A
F
H1
D1
J1
b1 0.95 1.20 0.037 0.047
c 0.48 0.70 0.019 0.027
D 15.25 15.75 0.60 0.62
D1 1.27 0.05
E 10.00 10.40 0.39 0.41
e 2.40 2.70 0.094 0.106
e1 4.95 5.15 0.19 0.20
F 1.23 1.32 0.048 0.052
H1 6.20 6.60 0.24 0.26
C
J1 2.40 2.72 0.095 0.107
L 13.00 14.00 0.51 0.55
L1 2.60 2.90 0.102 0.114
L20 15.40 0.61
L30 28.90 1.14
∅P 3.75 3.85 0.147 0.151
Q 2.65 2.95 0.104 0.116
6/9 Doc ID 11213 Rev 4
STPS30120C Package information
Devices in I2PAK with nickel-plated back frame must NOT be mounted by frame soldering
like SMDs. Such devices are intended to be through-hole mounted ONLY and in no
circumstances shall ST be held liable for any lack of performance or damage arising out of
soldering of nickel-plated back frames.
Table 7. I2PAK dimensions
Dimensions
Ref.
Millimeters Inches
Min. Max. Min. Max.
A 4.40 4.60 0.173 0.181
A1 2.40 2.72 0.094 0.107
b 0.61 0.88 0.024 0.035
L2
A
E
c2
b1 1.14 1.70 0.044 0.067
D
c 0.49 0.70 0.019 0.028
c2 1.23 1.32 0.048 0.052
L1
L
b1
A1
D 8.95 9.35 0.352 0.368
e 2.40 2.70 0.094 0.106
e1 4.95 5.15 0.195 0.203
b
e
e1
c
E 10 10.40 0.394 0.409
L 13 14 0.512 0.551
L1 3.50 3.93 0.138 0.155
L2 1.27 1.40 0.050 0.055
Doc ID 11213 Rev 4 7/9
Ordering information STPS30120C
3 Ordering information
Table 8. Ordering information
Order code Marking Package Weight Base qty Delivery mode
STPS30120CT STPS30120CT TO-220AB 2.23 g 50 Tube
STPS30120CR STPS30120CR I2PAK 1.49 g 50 Tube
STPS30120CTN STPS30120CTN
TO-220AB
narrow leads
1.9 g 50 Tube
4 Revision history
Table 9. Document revision history
Date Revision Changes
18-Feb-2005 1 First issue.
23-Nov-2006 2 Reformatted to current standards. Added I2PA K p a c k a g e .
17-Feb-2010 3 Updated Ta bl e 2 . Added Figure 1 and Figure 10.
13-Jan-2012 4 Added TO-220AB narrow leads package.
8/9 Doc ID 11213 Rev 4
STPS30120C
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Doc ID 11213 Rev 4 9/9
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