SEMICONDUCTOR
RoHS
70FD(R)Series
RoHS
N
ell
High Power Products
Fig.1 Current rating nomogram (Sinusoidal Waveforms)
Maximum average forward power loss (W)
120
ø =180°
120°
90°
60°
30°
R
th
SA
=
0 .7
1.0
-
▲
K/
W
R
60
40
20
0
0
RMS Limit
-
▲
R
180°
120°
90°
60°
30°
0.29
0.31
0.40
0.65
1.11
1. 5
2.0-
-
▲
R
▲
R
3 -
▲
R
Conduction Angle
4 -
▲
R
10
20
30
40
50
60
70 10 20 30 40 50 60 70 80
90
100
Maximum allowable ambient temperature (°C)
Average forward current (A)
Fig.2 Current rating nomogram (Rectangular waveforms)
Maximum average forward power loss (W)
30
Conduction angle
ø
DC
180°
120°
60°
30°
25
20
15
10
5
0
0
2
4
6
Average forward current (A)
RMS Limit
ø =180°
120°
60°
30°
R
th
S
1.
A=
0-
▲
R
DC
5-
▲
6-
▲
R
8 -
▲
R
1 0 -
▲
R
4-
▲
R
R
R
K/
W
0.15
0.29
0.65
1.10
1 5 -
▲
R
ø
Conduction Angle
20 -
▲
R
no hea tsink
8 10 12 14 16 18 20
10 20 30 40 50 60 70 80 90 100
Maximum allowable ambient temperature (°C)
Fig .3 Maximum high level forward power
loss vs. average forward current
Maximum average forward power loss (W)
10
4
70FD(R)Series
T
J
= 125°C
ø =180°
120°
60°
30°
Fig. 4 Maximum forward voltage vs. forward
current.
10
3
70FD(R)Series
10
3
ø =DC
180°
120°
60°
30°
Instantaneous forward current (A)
10
2
T
J
= 125°C
10
2
10
T
J
= 25°C
10
10
10
2
10
3
10
4
1
0
0.5 1.0
1.5
2.0
2.5
3.0
3.5 4.0
Instantaneous forward voltage (V)
Average forward current (A)
www.nellsemi.com
Page 4 of 6
▲
R
0
3 -
▲
2.
0-
▲
R
K/W
70FD(R)Series
T
J
= 150°C
▲
R
80
0.
0.
5-
▲
R
3-
▲
R
K/W
100
Conduction angle
ø
0.
▲
R
5-
70FD(R)Series
T
J
= 125°C
NELLSEMI [ NELL SEMICONDUCTOR CO., LTD ]
