Vishay 70CRU04 - Manual (Page 4)

70CRU04
Bulletin PD-20637 rev. A 12/06
Fig. 5 - Max. Allowable Case Temperature
Vs. Average Forward Current
Fig. 8 - Typical Stored Charge vs. di
F
/dt
Fig. 6 - Forward Power Loss Characteristics
(3) Formula used: T
C
= T
J
- (Pd + Pd
REV
) x R
thJC
;
Pd = Forward Power Loss = I
F(AV)
x V
FM
@ (I
F(AV)
/ D) (see Fig. 6);
Pd
REV
= Inverse Power Loss = V
R1
x I
R
(1 - D); I
R
@ V
R1
= rated V
R
Average Forward Current - I
F(AV)
(A)
Fig. 7 - Typical Reverse Recovery vs. di
F
/dt
Allowable Case Temperature (°C)
Average Power Loss ( Watts )
trr ( ns )
Qrr ( nC )
di
F
/dt (A/μs ) di
F
/dt (A/μs )
Average Forward Current - I
F(AV)
(A)
100
110
120
130
140
150
160
170
180
0 5 10 15 20 25 30 35 40
DC
Square wave (D = 0.50)
Rated Vr applied
see note (3)
0
5
10
15
20
25
30
35
40
0 5 10 15 20 25 30 35
RMS Limit
D = 0.01
D = 0.02
D = 0.05
D = 0.10
D = 0.20
D = 0.50
DC
50
60
70
80
90
100
110
120
130
140
150
100 1000
Tj = 125˚C
Tj = 25˚C
If = 35A
Vrr = 200V
0
500
1000
1500
2000
2500
100 1000
Tj = 125˚C
Tj = 25˚C
If = 35A
Vrr = 200V
Document Number: 93023 www.vishay.com
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