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provide the lowest overall power losses in any in the end application.
 FREEWHEEL Mode application (Fig.A) The way of calculating the power losses is given
considering both the diode and the companion below:
TOTAL LOSSES
due to the diode
P = P1+ P2+ P3+ P4+ P5 Watts
CONDUCTION REVERSE SWITCHING SWITCHING
LOSSES LOSSES LOSSES LOSSES
in the diode in the diode in the diode in the tansistor
due to the diode
Fig. A :  FREEWHEEL MODE.
SWITCHING
TRANSISTOR
IL
DIODE:
TURBOSWITCH
VR
t
T
F = 1/T = t/T
LOAD
5/9
STTA806D/DI/G
APPLICATION DATA (Cont d)
Fig. B: STATIC CHARACTERISTICS
Conduction losses :
I
P1 = V . I +R . I
t0 F(AV) d F2(RMS)
I
F
Rd
V
R
V
VtO VF
IR
Reverse losses :
P2 = VR . IR . (1- )
Fig. C: TURN-OFF CHARACTERISTICS
V
Turn-on losses :
IL
(in the transistor, due to the diode)
TRANSISTOR
VR IRM ( 3 + 2 S ) F
2
I
t
P5 =
6 x dIF dt
VR IRM IL ( S + 2 ) F
+
2 x dIF dt
I
dI
F/dt DIODE
Turn-off losses (in the diode) :
ta tb
V
VR IRM S F
2
t
P3 =
dI /dt 6 x dIF dt
R
I
RM
VR
P3 and P5 are suitable for power MOSFET and
trr = ta + tb S = tb / ta
IGBT
Fig. D: TURN-ON CHARACTERISTICS
I
F
I
Fmax
dIF /dt
0 t
Turn-on losses :
V
F P4 = 0.4 (VFP - VF) . IFmax . tfr . F
V
Fp
V
F
1.1V
F
0t
tfr
6/9
STTA806D/DI/G
PACKAGE DATA
D2PAK
DIMENSIONS
REF. Millimeters Inches
A
Min. Max. Min. Max.
E
C2
L2
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
L
B 0.70 0.93 0.027 0.037
B2 1.14 1.70 0.045 0.067
L3
A1
C 0.45 0.60 0.017 0.024
C2 1.23 1.36 0.048 0.054
B2
R
C
B
D 8.95 9.35 0.352 0.368
E 10.00 10.40 0.393 0.409
G
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
L3 1.40 1.75 0.055 0.069
*
V2
M 2.40 3.20 0.094 0.126
* FLAT ZONE NO LESSTHAN 2mm
R 0.40 typ. 0.016 typ.
V2 0 8 0 8
FOOTPRINT DIMENSIONS (in millimeters) Cooling method : by conduction (C)
16.90
10.30 5.08
1.30
3.70
8.90
7/9
STTA806D/DI/G
PACKAGE DATA
TO-220AC (JEDEC OUTLINE)
DIMENSIONS
REF. Millimeters Inches
Min. Max. Min. Max.
H2 A
A 4.40 4.60 0.173 0.181
C
C 1.23 1.32 0.048 0.051
L5
D 2.40 2.72 0.094 0.107
L7
I
E 0.49 0.70 0.019 0.027
L6 F 0.61 0.88 0.024 0.034
L2
F1 1.14 1.70 0.044 0.066
G 4.95 5.15 0.194 0.202
D
L9
H2 10.00 10.40 0.393 0.409
F1
L2 16.40 typ. 0.645 typ.
L4
L4 13.00 14.00 0.511 0.551
L5 2.65 2.95 0.104 0.116
M
F
E
L6 15.25 15.75 0.600 0.620
L7 6.20 6.60 0.244 0.259
G
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
Cooling method : by conduction (C)
Recommanded torque value : 0.55m.N
Maximum torque value : 0.7m.N
8/9
STTA806D/DI/G
PACKAGE DATA
INSULATED TO-220AC
DIMENSIONS
B
C
REF. Millimeters Inches
b2
Min. Typ. Max. Min. Typ. Max.
A 15.20 15.90 0.598 0.625
L
a1 3.75 0.147
F
I
a2 13.00 14.00 0.511 0.551
A
B 10.00 10.40 0.393 0.409
b1 0.61 0.88 0.024 0.034
l4
b2 1.23 1.32 0.048 0.051
C 4.40 4.60 0.173 0.181
c2
c1 0.49 0.70 0.019 0.027
a1
c2 2.40 2.72 0.094 0.107
l2
e 4.80 5.40 0.189 0.212
a2
F 6.20 6.60 0.244 0.259
I 3.75 3.85 0.147 0.151
I4 15.80 16.40 16.80 0.622 0.646 0.661
b1
M
L 2.65 2.95 0.104 0.116
c1
e
l2 1.14 1.70 0.044 0.066
M 2.60 0.102
Cooling method : by conduction (C)
Recommanded torque value : 0.8m.N
Maximum torque value : 1m.N
Ordering type Marking Package Weight Base qty Delivery mode
STTA806D STTA806D TO-220AC 1.86g 50 Tube
STTA806DI STTA806DI TO-220AC Ins. 1.86g 250 Bulk
STTA806G STTA806G D2PAK 1.48g 50 Tube
STTA806G-TR STTA806G D2PAK 1.48g 500 Tape & reel
Epoxy meets UL94,V0
Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences of
use of such information nor forany infringement of patents or other rights of third parties which may result from its use. No license is granted by
implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject to
change without notice. This publication supersedes and replaces all information previously supplied.
STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written ap-
proval of STMicroelectronics.
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