The TURBOSWITCH "R" is an ultra high
performance diode.
This TURBOSWITCH family, which drastically
cuts losses in associated MOSFET when run at
high dIF/dt, is suited for HF OFF-Line SMPS and
DC/DC converters.
K
A
K
TO-220AC
STTH8R03D
K
A
NC
D2PAK
STTH8R03G
ABSOLUTE RATINGS (limiting values, per diode)
SymbolParameterValueUnit
V
RRM
I
F(RMS)
I
F(AV)
I
FSM
T
stg
Tj
February 2001 - Ed: 1H
Repetitive peak reverse voltage
RMS forward current
Average forward currentTc = 140°C δ = 0.5
Surge non repetitive forward currenttp = 10 ms sinusoidal
Storage temperature range
Maximum operating junction temperature
300V
20A
8A
80A
- 65 + 175°C
+ 175°C
1/6
Page 2
STTH8R03G/D
THERMAL AND POWER DATA
SymbolParameterValueUnit
R
th (j-c)
Junction to case
STATIC ELECTRICAL CHARACTERISTICS
SymbolParameterTests conditionsMin.Typ.Max.Unit
2.5°C/W
*
I
R
Reverse leakage
V
R=VRRM
current
V
**
F
Forward voltage dropI
= 8 ATj = 25°C
F
Tj = 25°C
Tj = 125°C
Tj = 125°C
15100
1.051.3
10µA
1.8V
Pulse test : * tp=5ms,δ<2%
** tp = 380 µs, δ <2%
To evaluate the maximum conduction losses use the following equation :
P=0.9xI
F(AV)
+ 0.05 I
F2(RMS)
RECOVERY CHARACTERISTICS
SymbolTests conditionsMin.Typ.Max.Unit
13ns
30
45.5A
I
trr
RM
= 0.5 AIrr= 0.25 AIR= 1ATj = 25°C
I
F
I
=1A dIF/dt=-50A/µsVR= 30V
F
VR= 200 V IF=8A dIF/dt = - 200A/µsTj = 125°C
S factor0.4
TURN-ON SWITCHING CHARACTERISTICS
SymbolTests conditionsMin.Typ.Max.Unit
t
fr
Tj = 25°C IF=8A dIF/dt = 100A/µs
200ns
measured at 1.1xVFmax
2/6
V
FP
Tj = 25°C IF=8A dIF/dt = 100A/µs
3.5V
Page 3
STTH8R03G/D
Fig.1: Conduction losses versusaverage current
P(W)
15.0
δ = 0.05
δ = 0.1
δ = 0.2
δ = 0.5
12.5
10.0
δ = 1
7.5
5.0
T
2.5
0.0
IF(av) (A)
0246810
δ
=tp/T
tp
Fig. 3: Relative variation of thermal impedance
junction to case versus pulse duration.
Zth(j-c)/Rth(j-c)
1.0
0.8
δ = 0.5
0.6
δ = 0.2
0.4
δ = 0.1
0.2
Single pulse
0.0
1E-31E-21E-11E+0
tp(s)
δ
=tp/T
T
tp
Fig. 2: Forward voltage drop versus forward
current.
IFM(A)
100
10
Tj=125°C
Typical values
Tj=125°C
Maximum values
Tj=25°C
Maximum values
VFM(V)
1
0.00.51.01.52.02.53.03.54.0
Fig. 4:Peak reverse recovery current versus
dIF/dt (90% confidence).
IRM(A)
10
VR=200V
Tj=125°C
8
6
4
2
dIF/dt(A/µs)
0
050 100 150 200 250 300 350 400 450 500
IF= 2 x IF(av)
IF=IF(av)
IF= 0.5 x IF(av)
Fig. 5:Reverse recovery time versus dIF/dt
(90% confidence).
trr(ns)
80
70
60
50
40
IF=2 x IF(av)
IF=IF(av)
30
20
IF=0.5 x IF(av)
10
0
050 100 150 200 250 300 350 400 450 500
dIF/dt(A/µs)
VR=200V
Tj=125°C
Fig. 6: Reverse recovery charges versus dIF/dt
(90% confidence).
Qrr(nC)
140
VR=200V
Tj=125°C
120
100
80
60
40
20
0
050 100 150 200 250 300 350 400 450 500
dIF/dt(A/µs)
IF=2 x IF(av)
IF=IF(av)
IF=0.5 x IF(av)
3/6
Page 4
STTH8R03G/D
Fig. 7:Softness factor (tb/ta) versus dIF/dt
(typical values).
S factor
0.6
0.5
0.4
0.3
0.2
0.1
dIF/dt(A/µs)
0.0
050 100 150 200 250 300 350 400 450 500
IF < 2 x IF(av)
VR=200V
Tj=125°C
Fig. 9: Transient peak forward voltage versus
dIF/dt (90% confidence).
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