Vishay 70CRU02PbF - Manual (Page 4)

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4 Revision: 21-Jul-08
70CRU02PbF
Vishay High Power Products Ultrafast Rectifier,
2 x 35 A FRED Pt TM
Fig. 5 - Maximum Allowable Case Temperature vs.
Average Forward Current
Fig. 6 - Forward Power Loss Characteristics
Fig. 7 - Typical Reverse Recovery Time vs. dI
F
/dt
Fig. 8 - Typical Stored Charge vs. dI
F
/dt
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. 6);
Pd
REV
= Inverse power loss = V
R1
x I
R
(1 - D); I
R
at V
R1
= Rated V
R
Average Forward Current - I
F(AV)
(A)
Allowable Case Temperature (°C)
80
90
100
110
120
130
140
150
160
170
180
0 10 20 30 40 50 60
DC
Square wave (D = 0.50)
Rated Vr applied
see note (1)
Average Power Loss ( W )
0
10
20
30
40
50
0 10 20 30 40 50 60
RMS Limit
D = 0.20
D = 0.25
D = 0.33
D = 0.50
D = 0.75
DC
Average Forward Current - I
F(AV)
(A)
trr ( ns )
di
F
/dt (A/μs )
0
10
20
30
40
50
60
70
80
100 1000
If = 35A
Vrr = 100V
Tj = 125˚C
Tj = 25˚C
Qrr ( nC )
di
F
/dt (A/μs )
0
100
200
300
400
500
600
100 1000
If = 35A
Vrr = 100V
Tj = 125˚C
Tj = 25˚C