Page 1
STTA812D/DI/G
TURBOSWITCH
ULTRA-FASTHIGH VOLTAGE DIODE
MAINPRODUCTCHARACTERISTICS
I
F(AV)
V
RRM
(typ) 50ns
t
rr
(max) 2.0V
V
F
8A
1200V
FEATURESAND BENEFITS
ULTRA-FAST,SOFT RECOVERY.
VERY LOW OVERALL POWER LOSSES IN
BOTH THE DIODE AND THE COMPANION
TRANSISTOR.
HIGH FREQUENCY AND/OR HIGH PULSED
CURRENTOPERATION.
HIGHREVERSEVOLTAGECAPABILITY
INSULATEDPACKAGE: TO-220ACIns.
Electricalinsulation : 2500V
RMS
Capacitance: 7pF.
K
TO-220AC
STTA812D
A
K
K
D2PAK
STTA812G
TO-220ACIns.
STTA812DI
A
NC
A
K
DESCRIPTION
TURBOSWITCH 1200V drastically cuts losses in
all highvoltageoperationswhich requireextremely
fast,softand noise-freepower diodes.Due to their
optimizedswitchingperformancesthey alsohighly
decrease power losses in any associated
They are particularly suitable in motor control
circuitries, or in the primary of SMPSas snubber,
clamping or demagnetizingdiodes. They are also
suitable for secondary of SMPS as high voltage
rectifierdiodes.
switching IGBT or MOSFET in all ”freewheel
mode”operations.
ABSOLUTE RATINGS(limitingvalues)
Symbol Parameter Value Unit
V
RRM
V
RSM
I
F(RMS)
Repetitivepeakreversevoltage 1200 V
Non repetitivepeakreverse voltage 1200 V
RMSforwardcurrent TO-220AC/D2PAK 30 A
TO-220ACIns. 20 A
I
FRM
I
FSM
T
stg
T
TURBOSWITCH is a trademark of STMicroelectronics.
November 1999- Ed: 4C
Repetitivepeakforward current tp = 5µs F = 5kHz square 110 A
Surgenon repetitiveforwardcurrent tp = 10ms sinusoidal 70 A
Storagetemperaturerange - 65 to+ 150 °C
Maximumoperatingjunctiontemperature 150 °C
j
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STTA812D/DI/G
THERMAL AND POWER DATA
Symbol Parameter Conditions Value Unit
R
P
th(j-c)
P
1
max
Junctionto casethermal
resistance
Conductionpowerdissipation
=8Aδ=0.5
I
F(AV)
Totalpower dissipation
Pmax= P1 +P3 (P3 = 10% P1)
TO-220AC/D2PAK
TO-220ACIns.
TO-220AC/D
2
PAK
TO-220ACIns.
TO-220AC/D2PAK
TO-220ACIns.
Tc= 105°C
Tc= 85°C
Tc= 100°C
Tc= 79°C
2.3
3.3
19.5 W
21.5 W
STATICELECTRICAL CHARACTERISTICS
Symbol Parameter Testconditions Min Typ Max Unit
V
F*
I
R**
Forwardvoltagedrop IF=8A Tj = 25°C
Reverseleakagecurrent VR=0.8x
V
RRM
Vto Thresholdvoltage Ip< 3.I
AV
Tj = 125°C 1.35
Tj=25°C
Tj = 125°C 0.6
Tj = 125°C 1.57 V
2.2
2.0
100
4
rd Dynamicparameter 54 mΩ
Test pulses : * tp = 380 µs, δ <2%
** tp= 5 ms ,δ<2%
Toevaluate the maximum conductionlossesusethe following equation :
P=V
toxIF(AV)
+rdxI
F2(RMS)
°C/W
V
V
A
µ
mA
DYNAMICELECTRICAL CHARACTERISTICS
TURN-OFF SWITCHING
Symbol Parameter Testconditions Min Typ Max Unit
t
rr
I
RM
S factor Softnessfactor Tj = 125°CV
Reverserecovery
time
Maximumreverse
recoverycurrent
Tj=25°C
=0.5 A IR= 1A Irr = 0.25A
I
F
=1A dIF/dt =-50A/µsVR=30V
I
F
Tj = 125°C VR = 600V IF=8A
dI
/dt= -64 A/µs
F
dI
/dt= -500A/µs
F
=600V IF=8A
R
/dt= -500A/µs 1.2
dI
F
50
100
12
25
TURN-ON SWITCHING
Symbol Parameter Testconditions Min Typ Max Unit
t
fr
V
Fp
Forwardrecoverytime Tj= 25°C
=8A, dIF/dt = 64 A/µs
I
F
measuredat 1.1×V
Peakforwardvoltage Tj = 25°C
=8A,dIF/dt = 64 A/µs
I
F
=40A,dIF/dt =500 A/µs45
I
F
max
F
900
35
ns
A
-
ns
V
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STTA812D/DI/G
Fig.1: Conductionlosses versusaveragecurrent.
P1(W)
20
18
16
14
δ = 0.1
δ =0.2
δ= 0.5
δ =1
12
10
8
6
4
2
0
0246810
IF(av) (A)
Fig. 3: Relative variation of thermal impedance
junctionto case versus pulse duration.
Zth(j-c)/Rth(j-c)
1.0
0.8
0.6
δ = 0.5
0.4
δ = 0.2
0.2
δ = 0.1
Single pulse
0.0
1E-4 1E-3 1E-2 1E-1 1E+0
tp(s)
Fig. 2: Forward voltage drop versus forward cur-
rent(maximumvalues).
IFM(A)
100.0
Tj=125°C
10.0
1.0
VFM(V)
0.1
0.0 1.0 2.0 3.0 4.0 5.0
Fig. 4: Peak reverse recovery current versus
dI
/dt (90% confidence).
F
IRM(A)
50
VR=600V
Tj=125°C
40
30
20
10
0
0 100 200 300 400 500
dIF/dt(A/µs)
IF=2*IF(av)
IF=IF(av)
IF=0.5*IF(av)
Fig. 5: Reverserecovery time versus dIF/dt (90%
confidence).
trr(ns)
550
500
450
400
350
IF=2*IF(av)
300
250
200
150
100
50
0
0 100 200 300 400 500
IF=0.5*IF(av)
dIF/dt(A/µs)
VR=600V
Tj=125°C
IF=IF(av)
Fig.6: Softnessfactor(tb/ta) versusdIF/dt(typical
values).
S factor
1.40
VR=600V
IF<2*IF(av)
1.20
1.00
0.80
0 100 200 300 400 500
dIF/dt(A/µs)
Tj=125°C
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STTA812D/DI/G
Fig. 7: Relative variation of dynamic parameters
versusjunctiontemperature(referenceTj=125°C).
1.1
1.0
0.9
0.8
0.7
25 50 75 100 125
S factor
IRM
Tj(°C)
Fig. 9: Forwardrecoverytime versusdIF/dt (90%
confidence).
tfr(ns)
600
VFR=1.1*VF max.
500
IF=IF(av)
Tj=125°C
Fig.8: Transient peak forward voltage versus
/dt (90% confidence).
dI
F
VFP(V)
70
IF=IF(av)
60
Tj=125°C
50
40
30
20
10
0
0 100 200 300 400 500
dIF/dt(A/µs)
400
300
200
dIF/dt(A/µs)
100
0 100 200 300 400 500
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APPLICATIONDATA
The 1200V TURBOSWITCH series has been
designed to provide the lowest overall power
losses in all high frequencyor high pulsed current
operations. In such applications (Fig A to D),the
wayof calculatingthepowerlossesisgivenbelow:
TOTALLOSSES
due to the diode
P = P1+ P2+P3+ P4+ P5 Watts
STTA812D/DI/G
CONDUCTION
LOSSES
in thediode
Fig.A: ”FREEWHEEL”MODE.
SWITCHING
TRANSISTOR
V
R
REVERSE
in thediode
t
T
LOSSES
SWITCHING
LOSSES
in the diode
DIODE:
TURBOSWITCH
SWITCHING
LOSSES
in thetansistor
due to the diode
IL
F=1/T =t/T
LOAD
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Page 6
STTA812D/DI/G
Fig. B: SNUBBERDIODE. Fig. C: DEMAGNETIZINGDIODE.
PWM
t
T
F = 1/T = t/T
Fig.D: RECTIFIERDIODE.
STATIC& DYNAMIC CHARACTERISTICS . POWERLOSSES .
Fig. E: STATICCHARACTERISTICS
Conductionlosses:
I
P1 = V
t0.IF(AV)+Rd.IF2(RMS)
I
F
Rd
Reverse losses:
P2 = V
R.IR
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V
R
V
tOVF
I
R
V
.(1-δ)
Page 7
APPLICATIONDATA (Cont’d)
Fig.F: TURN-OFFCHARACTERISTICS
STTA812D/DI/G
V
I
I
dI /dt
V
I
RM
I
V
I
trr = ta + tb
S = tb/ta
TRANSISTOR
F
DIODE
tbta
dI /dt
R
trr = ta + tb S = tb / ta
dIF/dt = VR/L
RECTIFIER
OPERATION
tbta
dI /dt
RM
R
IL
t
VR
V
Turn-onlosses:
(inthe transistor,dueto the diode)
2
×
I
I
RM
RM
× ( 3 + 2 ×
6
xdI
I
×
× (S+2) ×
L
2
x
dI
F
F
dt
⁄
S)×F
dt
⁄
F
P5=
+
V
R
V
×
R
Turn-offlosses(inthe diode):
2
I
×
RM
6
xdI
×
⁄
F
S×F
dt
t
P3=
V
R
Turn-offlosses:
(withnon negligibleserial inductance)
2
I
V
t
R
P3’=
×
R
RM
6
xdI
×
I
L
RM
S×F
×
dt
⁄
F
2
F
×
+
2
P3,P3’and P5 are suitablefor powerMOSFETand
IGBT
Fig. G: TURN-ONCHARACTERISTICS
I
F
I
dI /dt
F
0
V
F
V
Fp
1.1V
F
0t
tfr
Fmax
t
Turn-onlosses:
P4= 0.4 (V
V
F
FP-VF
).I
Fmax.tfr
.F
7/10
Page 8
STTA812D/DI/G
PACKAGEDATA
TO-220ACIns.
l4
b1
B
L
I
A
C
b2
REF.
Millimeters Inches
DIMENSIONS
Min. Typ. Max. Min. Typ. Max.
F
A 15.20 15.90 0.598 0.625
a1 3.75 0.147
a2 13.00 14.00 0.511 0.551
B 10.00 10.40 0.393 0.409
b1 0.61 0.88 0.024 0.034
b2 1.23 1.32 0.048 0.051
a1
c2
C 4.40 4.60 0.173 0.181
c1 0.49 0.70 0.019 0.027
l2
a2
c2 2.40 2.72 0.094 0.107
e 4.80 5.40 0.189 0.212
F 6.20 6.60 0.244 0.259
I 3.75 3.85 0.147 0.151
M
e
c1
I4 15.80 16.40 16.80 0.622 0.646 0.661
L 2.65 2.95 0.104 0.116
l2 1.14 1.70 0.044 0.066
M 2.60 0.102
Coolingmethod: byconduction(C)
Recommendedtorquevalue:0.8 m.N
Maximumtorquevalue:1.0 m.N
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Page 9
PACKAGEDATA
2
PAK
D
E
L2
L
L3
G
A
C2
A1
B2
B
* FLATZONE NO LESSTHAN 2mm
C
A2
M
*
R
V2
STTA812D/DI/G
DIMENSIONS
REF.
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
B 0.70 0.93 0.027 0.037
D
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
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
L 15.00 15.85 0.590 0.624
L2 1.27 1.40 0.050 0.055
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.
V2 0° 8° 0° 8°
Millimeters Inches
Min. Max. Min. Max.
FOOTPRINTDIMENSIONS(in millimeters)
16.90
10.30
1.30
3.70
8.90
5.08
9/10
Page 10
STTA812D/DI/G
PACKAGEDATA
TO-220AC (JEDEC outline)
H2
L5
ØI
L2
L9
F1
F
G
L6
L4
DIMENSIONS
REF.
Millimeters Inches
Min. Max. Min. Max.
A
C
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
L7
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
G 4.95 5.15 0.194 0.202
D
H2 10.00 10.40 0.393 0.409
L2 16.40 typ. 0.645typ.
L4 13.00 14.00 0.511 0.551
M
E
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.I 3.75 3.85 0.147 0.151
Coolingmethod: byconduction(C)
Recommendedtorquevalue:0.55 m.N
Maximumtorquevalue:0.7 m.N
Orderingtype Marking Package Weight Baseqty Delivery mode
STTA812D STTA812D TO-220AC 1.86g 50 Tube
STTA812DI STTA812DI TO-220ACIns. 1.86g 250 Box
2
STTA812G STTA812G D
STTA812G-TR STTA812G D
PAK 1.48g 50 Tube
2
PAK 1.48g 500 Tape& reel
EpoxymeetsUL94,V0
Informationfurnishedis believed tobe accurateandreliable.However,STMicroelectronics assumes no responsibility for theconsequences of
use ofsuch informationnor forany infringementof patentsor otherrights of thirdparties which may result fromits use. No license is grantedby
implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject to
change without notice.Thispublicationsupersedesand replaces all informationpreviously supplied.
STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics.
The ST logo is a registered trademark of STMicroelectronics
1999 STMicroelectronics - Printed inItaly - All rights reserved.
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