C&H Technology 25F(R) Series - Manual (Page 5)

www.vishay.com For technical questions, contact: [email protected] Document Number: 93506
4 Revision: 29-Sep-08
25F(R) Series
Vishay High Power Products Standard Recovery Diodes
(Stud Version), 25 A
Fig. 4 - Forward Power Loss Characteristics
Fig. 5 - Maximum Non-Repetitive Surge Current
Fig. 6 - Maximum Non-Repetitive Surge Current
Fig. 7 - Forward Voltage Drop Characteristics
Fig. 8 - Thermal Impedance Z
thJC
Characteristics
0 25 50 75 100
Maximum Allowable Ambient Temperature (°C)
10 K/W
15 K/W
R
=
4 K
/W
- D
elta
R
thS
A
6 K
/W
8 K/W
20 K/W
30 K/W
0
5
10
15
20
25
0 5 10 15 20 25 30
DC
180°
120°
90°
60°
30°
Average Forward Current (A)
RMS Limit
M
a
x
im
u
m
A
v
erage F
o
rw
a
rd
P
o
w
e
r Los
s
(W
)
Conduction Period
16F(R) Series
T = 175°C
J
50
100
150
200
250
300
350
1 10 100
P
e
a
k
H
a
lf
S
ine
W
a
v
e
F
o
rw
a
rd C
u
rr
en
t (
A
)
Number Of Equal Amplitude Half Cycle Current Pulses (N)
Initial T = 175°C
@ 60 Hz 0.0083 s
@ 50 Hz 0.0100 s
At Any Rated Load Condition And With
Rated V Applied Following Surge.
RRM
J
25F(R) Series
0
50
100
150
200
250
300
350
400
0.01 0.1 1 10
Pea
k
H
a
lf
Si
n
e
W
a
v
e
F
o
rw
a
rd C
u
rr
en
t (
A
)
Pulse Train Duration (s)
Maximum Non Repetitive Surge Current
Initial T = 175°C
No Voltage Reapplied
Rated V Reapplied
Versus Pulse Train Duration.
J
RRM
25F(R) Series
1
10
100
1000
0 0.5 1 1.5 2 2.5 3 3.5 4
T = 25°C
J
In
s
ta
n
ta
n
e
o
u
s
F
o
rw
a
rd
C
u
rre
n
t (A
)
Instantaneous Forward Voltage (V)
T = 175°C
J
25F(R) Series
0.1
1
10
0.001 0.01 0.1 1 10
Square Wave Pulse Duration (s)
th
JC
T
ran
s
ie
n
t
T
h
e
rm
a
l
Im
pe
d
a
nc
e
Z
(K
/W
)
25F(R) Series
Steady State Value
R = 1.5 K/W
(DC Operation)
thJC