www.vishay.com For technical questions within your region, please contact one of the following: Document Number: 94032
4 DiodesAmericas@vishay.com
, DiodesAsia@vishay.com, DiodesEurope@vishay.com Revision: 29-Jun-10
VS-8ETX06PbF, VS-8ETX06FPPbF
Vishay Semiconductors
Hyperfast Rectifier, 8 A FRED Pt
®
Fig. 5 - Maximum Thermal Impedance Z
thJC
Characteristics (FULL-PAK)
Fig. 6 - Maximum Allowable Case Temperature vs.
Average Forward Current
Fig. 7 - Maximum Allowable Case Temperature vs.
Average Forward Current (FULL-PAK)
Fig. 8 - Forward Power Loss Characteristics
Note
(1)
Formula used: T
C
= T
J
- (Pd + Pd
REV
) x R
thJC
;
Pd = Forward power loss = I
F(AV)
x V
FM
at (I
F(AV)
/D) (see fig. 8);
Pd
REV
= Inverse power loss = V
R1
x I
R
(1 - D); I
R
at V
R1
= Rated V
R
0.01
0.1
1
10
0.00001 0.0001 0.001 0.01 0.1 1
t
1
- Rectangular Pulse Duration (s)
Z
thJC
- Thermal Impedance (°C/W)
Single pulse
(thermal resistance)
.
.
P
DM
t
1
t
2
Notes:
1. Duty factor D = t
1
/t
2
2. Peak T
J
= P
DM
x Z
thJC
+ T
C
10
100
D = 0.50
D = 0.20
D = 0.10
D = 0.05
D = 0.02
D = 0.01
See note (1)
Square wave (D = 0.50)
Rated V
R
applied
02468 12
180
170
160
150
140
130
120
I
F(AV)
(A) Average Forward Current
Allowable Case Temperature (°C)
10
DC
Allowable Case Temperature (°C)
DC
See note (1)
Square wave (D = 0.50)
Rated V
R
applied
140
100
60
40
180
02468 12
I
F(AV)
- Average Forward Current (A)
80
120
160
10
Average Power Loss (W)
0
2
DC
RMS limit
D = 0.01
D = 0.02
D = 0.05
D = 0.1
D = 0.2
D = 0.5
0 4 8 10 12 14
I
F(AV)
- Average Forward Current (A)
20
18
16
14
12
6
10
4
8
26
