C&H Technology 71HF(R) Series - Manual (Page 6)

Document Number: 93521 For technical questions, contact: [email protected] www.vishay.com
Revision: 20-Jun-08 5
70HF(R) Series
Standard Recovery Diodes
(Stud Version), 70 A
Vishay High Power Products
Fig. 8 - Forward Power Loss Characteristics
Fig. 9 - Maximum Non-Repetitive Surge Current
Fig. 10 - Maximum Non-Repetitive Surge Current
Fig. 11 - Forward Voltage Drop Characteristics
Fig. 12 - Thermal Impedance Z
thJC
Characteristics
0 25 50 75 100 125 150
Maximum Allowable Ambient Temperature (°C)
R
=
0.3
K
/W
-
D
elt
a
R
thS
A 0.7
K/W
0.5
K
/W
1
K/W
1.5
K/W
2 K
/W
3 K/W
5 K/W
0
20
40
60
80
100
120
0 20 40 60 80 100 120
DC
180°
120°
90°
60°
30°
Average Forward Current (A)
RMS Limit
M
a
xi
m
u
m
A
v
er
ag
e
F
o
rw
ar
d
P
o
w
e
r L
o
s
s
(
W
)
Conduction Period
70HF(R) Series
(1400V to 1600V)
T = 150°C
J
300
400
500
600
700
800
900
1000
1100
1 10 100
Pea
k H
a
lf
Si
n
e
W
a
v
e
F
o
rw
a
rd C
u
rr
en
t (
A
)
Number Of Equal Amplitude Half Cycle Current Pulses (N)
70HF(R) Series
Initial T = T Max.
@ 60 Hz 0.0083 s
@ 50 Hz 0.0100 s
At Any Rated Load Condition And With
Rated V Applied Following Surge. RRM
J J
200
300
400
500
600
700
800
900
1000
1100
1200
0.01 0.1 1
P
e
ak
H
a
lf
Si
n
e
W
a
v
e
F
o
rw
ar
d
C
u
rr
e
n
t
(A
)
Pulse Train Duration (s)
Maximum Non Repetitive Surge Current
70HF(R) Series
Initial T = T Max.
No Voltage Reapplied
Rated V Reapplied
RRM
Versus Pulse Train Duration.
J J
1
10
100
1000
0 0.5 1 1.5 2 2.5 3
T = 25°C J
In
s
ta
n
ta
ne
o
u
s
F
o
rw
ar
d C
u
rr
e
nt
(
A
)
Instantaneous Forward Voltage (V)
T = T Max.
J J
70HF(R) Series
0.001
0.01
0.1
1
10
0.0001 0.001 0.01 0.1 1 10
Square Wave Pulse Duration (s)
th
JC
T
ra
n
s
ie
n
t
T
h
e
rm
a
l Im
p
e
da
n
c
e
Z
(K
/W
)
Steady State Value
R = 0.45 K/W
(DC Operation)
thJC
70HF(R) Series