Vishay semiconductors – C&H Technology VS-UFB201FA40 User Manual
Page 5
VS-UFB201FA40
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Vishay Semiconductors
Revision: 29-Nov-11
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Document Number: 93793
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Fig. 5 - Maximum Allowable Case Temperature vs.
Average Forward Current (Per Leg)
Fig. 6 - Forward Power Loss Characteristics (Per Leg)
Fig. 7 - Typical Reverse Recovery Time vs. dI
F
/dt
Fig. 8 - Typical Stored Charge vs. dI
F
/dt
Fig. 9 - Typical Reverse Recovery 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
DC
0
25
50
75
100
125
150
175
0
40
80
120
160
200
A
llo
w
a
b
le
C
a
s
e
T
e
m
p
er
at
u
re (
°
C)
I
F(AV)
- Average Forward Current (A)
Square wave (D = 0.50)
80 % Rated V
R
applied
see note
(1)
0
50
100
150
200
250
300
350
400
0
40
80
120
160
200
240
Ave
ra
g
e
Pow
e
r Loss
(W)
I
F(AV)
- Average Forward Current (A)
D = 0.20
D = 0.25
D = 0.33
D = 0.50
D = 0.75
DC
RMS Limit
50
75
100
125
150
175
200
225
250
0
0
0
1
0
0
1
t
rr
(ns)
dI
F
/dt (A/μs)
I
F
= 25 A
125 °C
V
R
= 200 V
25 °C
I
F
= 50 A
0
500
1000
1500
2000
2500
3000
0
0
0
1
0
0
1
Q
rr
(nC)
dI
F
/dt (A/μs)
I
F
= 25 A
125 °C
V
R
= 200 V
25 °C
I
F
= 50 A
0
10
20
30
40
0
0
0
1
0
0
1
t
rr
(ns)
dI
F
/dt (A/μs)
I
F
= 25 A
125 °C
V
R
= 200 V
25 °C
I
F
= 50 A