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STPS30120C
Power Schottky rectifier
Feature

A1 K A2
High junction temperature capability Avalanche rated Low leakage current Good trade-off between leakage current and forward voltage drop
A1 K K
K
A2 A1
Description
Dual center tap Schottky rectifier suited for high frequency switch mode power supply. Packaged in TO-220AB and I2PAK, 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.
K
A2
TO-220AB STPS30120CT
I2PAK STPS30120CR
Figure 1.
V I
Electrical characteristics (a)
I "Forward" 2 x IO IF
X
VRRM VR VAR
IO
X
V IR VTo VF(Io) VF VF(2xIo)
"Reverse"
IAR
Table 1.
Device summary
Symbol IF(AV) VRRM Tj(max) VF(typ) Value 2 x 15 A 120 V 175 C 0.57 V
a. VARM and IARM must respect the reverse safe operating area defined in Figure 11. VAR and IAR are pulse measurements (tp < 1 s). VR, IR, VRRM and VF, are static characteristics.
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Doc ID 11213 Rev 3
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Characteristics
STPS30120C
1
Characteristics
Table 2.
Symbol VRRM IF(RMS) IF(AV) IFSM PARM VARM(1) VASM(1) Tstg Tj
2.
Absolute ratings (limiting values, per diode)
Parameter Repetitive peak reverse voltage Forward rms current Average forward current = 0.5 Tc = 145 C Per diode Per device tp = 10 ms sinusoidal tp = 1 s Tj = 25 C Value 120 30 15 30 180 6700 150 150 -65 to + 175 175 Unit V A A A W V V C C
Surge non repetitive forward current Repetitive peak avalanche power
Maximum repetitive t = 1 s, Tj < 150 C, IAR < 13.4 A peak avalanche voltage p Maximum single pulse t = 1 s, Tj < 150 C, IAR < 13.4 A peak avalanche voltage p Storage temperature range Maximum operating junction temperature(2)
1. Refer to Figure 11
1 dPtot < condition to avoid thermal runaway for a diode on its own heatsink Rth(j-a) dTj
Table 3.
Symbol Rth(j-c) Rth(c)
Thermal parameters
Parameter Junction to case Coupling Per diode Total Total Value 2.2 1.3 0.3 Unit C/W C/W
When the diodes 1 and 2 are used simultaneously : Tj(diode 1) = P(diode 1) x Rth(j-c)(per diode) + P(diode 2) x Rth(c)
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STPS30120C Table 4.
Symbol IR(1)
Characteristics
Static electrical characteristics (per diode)
Test conditions Reverse leakage current Tj = 25 C Tj = 125 C Tj = 25 C Tj = 125 C VR = VRRM Min. Typ. Max. 15 2.5 7.5 0.74 IF = 5 A 0.57 0.61 0.92 IF = 15 A V 0.7 0.74 1.02 IF = 30 A 0.83 0.89 Unit A mA
VF(2)
Forward voltage drop
Tj = 25 C Tj = 125 C Tj = 25 C Tj = 125 C
1. Pulse test : tp = 5 ms, < 2% 2. Pulse test : tp = 380 s, < 2%
To evaluate the maximum conduction losses use the following equation : P = 0.59 x IF(AV) + 0.01 IF2(RMS) Figure 2. Average forward power Figure 3. dissipation versus average forward current (per diode)
IF(AV)(A)
18
Average forward current versus ambient temperature ( = 0.5, per diode)
PF(AV)(W)
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 0 2 4 6 8 10 12
= 0.05
= 0.1
= 0.2
= 0.5
16 14
Rth(j-a)=Rth(j-c)
=1
12 10 8 6
Rth(j-a)=15C/W
T
4 2
T
IF(AV)(A)
=tp/T
14 16
tp
0
18
=tp/T
0 25
tp
50
Tamb(C)
75 100 125 150 175
Figure 4.
Normalized avalanche power derating versus pulse duration
Figure 5.
Normalized avalanche power derating versus junction temperature
1
PARM(tp) PARM(1s)
1.2 1
PARM(Tj) PARM(25 C)
0.1
0.8 0.6
0.01
0.4 0.2
0.001 0.01
tp(s)
0.1 1 10 100 1000
0 25
Tj(C)
50 75 100 125 150
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Characteristics
STPS30120C
Figure 6.
Non repetitive surge peak forward current versus overload duration (maximum values, per diode)
Figure 7.
Relative variation of thermal impedance junction to ambient versus pulse duration
IM(A)
180 160 140 120 100 80 60 40 20 0 1.E-03 1.E-02 1.E-01 1.E+00
IM t
Zth(j-c)/Rth(j-c)
1.0 0.9 0.8 0.7 0.6
Tc=25C
= 0.5
0.5
Tc=75C
0.4 0.3
= 0.2 = 0.1 Single pulse
T
Tc=125C
0.2 0.1 0.0
=0.5
t(s)
tp(s)
1.E-02 1.E-01
=tp/T
tp
1.E+00
1.E-03
Figure 8.
Reverse leakage current versus reverse voltage applied (typical values, per diode)
Figure 9.
Junction capacitance versus reverse voltage applied (typical values, per diode)
IR(mA)
1.E+02 1.E+01 1.E+00 1.E-01 1.E-02
Tj=50C
C(pF)
1000
F=1MHz VOSC=30mVRMS Tj=25C
Tj=150C
Tj=125C Tj=100C Tj=75C
100
1.E-03
Tj=25C
1.E-04 1.E-05 0 10 20 30 40 50
VR(V)
60 70 80 90 100 110 120
VR(V)
10 1 10 100
Figure 10. Forward voltage drop versus forward current (per diode)
IFM(A)
100
Tj=125C (maximum values)
Figure 11. Reverse safe operating area (tp < 1 s and Tj < 150 C)
18 17 16
Iarm (A)
Tj=125C (typical values)
Tj=25C (maximum values)
15 14 13 12
10
VFM(V)
1 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6
11 120
Varm (V)
130 140
150
160
170
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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(R) packages, depending on their level of environmental compliance. ECOPACK(R) specifications, grade definitions and product status are available at: www.st.com. ECOPACK(R) is an ST trademark. Table 5. TO-220AB dimensions
Dimensions Ref. Millimeters Min. A C
H2 Dia L5 L7 L6 L2 F2 F1 L9 L4 F G1 G M E D C A
Inches Min. 0.173 0.048 0.094 0.019 0.024 0.044 0.044 0.194 0.094 0.393 Max. 0.181 0.051 0.107 0.027 0.034 0.066 0.066 0.202 0.106 0.409
Max. 4.60 1.32 2.72 0.70 0.88 1.70 1.70 5.15 2.70 10.40
4.40 1.23 2.40 0.49 0.61 1.14 1.14 4.95 2.40 10
D E F F1 F2 G G1 H2 L2 L4 L5 L6 L7 L9 M Diam.
16.4 typ. 13 2.65 15.25 6.20 3.50 14 2.95 15.75 6.60 3.93
0.645 typ. 0.511 0.104 0.600 0.244 0.137 0.551 0.116 0.620 0.259 0.154
2.6 typ. 3.75 3.85
0.102 typ. 0.147 0.151
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Package information Table 6. I2PAK dimensions
STPS30120C
Dimensions Ref. Millimeters Min.
A E L2 c2
Inches Min. 0.173 0.094 0.024 0.044 0.019 0.048 0.352 0.094 0.195 0.394 0.512 0.138 0.050 Max. 0.181 0.107 0.035 0.067 0.028 0.052 0.368 0.106 0.203 0.409 0.551 0.155 0.055
Max. 4.60 2.72 0.88 1.70 0.70 1.32 9.35 2.70 5.15 10.40 14 3.93 1.40
A A1 b b1
4.40 2.40 0.61 1.14 0.49 1.23 8.95 2.40 4.95 10 13 3.50 1.27
D
c c2
L1 L b1
A1
D e e1
b e e1
c
E L L1 L2
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STPS30120C
Ordering information
3
Ordering information
Table 7. Ordering information
Marking STPS30120CT STPS30120CR Package TO-220AB I PAK
2
Order code STPS30120CT STPS30120CR
Weight 2.23 g 1.49 g
Base qty 50 50
Delivery mode Tube Tube
4
Revision history
Table 8.
Date 18-Feb-2005 23-Nov-2006 17-Feb-2010
Document revision history
Revision 1 2 3 First issue. Reformatted to current standards. Added I2PAK package. Updated Table 2. Added Figure 1 and Figure 11. Changes
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STPS30120C
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