Vishay 70CRU04PbF - Manual (Page 4)

www.vishay.com For technical questions, contact: [email protected] Document Number: 94510
4 Revision: 21-Jul-08
70CRU04PbF
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)
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 (1)
Average Power Loss ( Watts )
Average Forward Current - I
F(AV)
(A)
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
trr ( ns )
di
F
/dt (A/μs )
50
60
70
80
90
100
110
120
130
140
150
100 1000
Tj = 125˚C
Tj = 25˚C
If = 35A
Vrr = 200V
Qrr ( nC )
di
F
/dt (A/μs )
0
500
1000
1500
2000
2500
100 1000
Tj = 125˚C
Tj = 25˚C
If = 35A
Vrr = 200V