LESHAN RADIO COMPANY, LTD.
SF31-SF36
RATING AND CHARACTERISTIC CURVES OF SUPER FAST DIODES
FIG.1–TEST CIRCUIT DIAGRAM AND
REVERSE RECOVERY TIME CHARACTERISTIC
50
Ω
NONINDUCTIVE
10
Ω
NONINDUCTIVE
D.U.T.
(-)
PULSE
G E N E R AT O R
(NOTE 2)
(+)
0
-0.25A
FIG. 2 – TYPICAL FORWARD
CURRENT DERATING CURVE
AVERAGE FORWARD CURRENT,(A)
6.0
5.0
4.0
3.0
2.0
1.0
0
0
50
100
150
157
Single Phase
Half Wave 60Hz
Resistive or
Inductive Load
+0.5A
Trr
(+)
25Vdc
(APPROX)
(-)
1Ω
NON.
INDUCTIVE
OSCILLOSCOPE
(NOTE 1)
NOTES:1.Rise Time=7ns max.
Input Impedance=1megohm.22pF.
2.Rise Time=10ns max.
Source Impedance=50 ohms.
-1.0A
SET TIME
BASE FOR 10 ns/cm
1cm
AMBIENT TEMPER ATURE, (ºC)
FIG. 3 – TYPICAL REVERSE
CHARACTERISTICS
1000
INSTANTANEOUS REVERSE CURRENT (µA)
INSTANTANEOUS FORWARD CURRENT, (A)
FIG. 4 – TYPICAL INSTANTANEOUS
FORWARD CHARACTERISTICS
10.0
T
J
=25ºC
100
T
J
= 150ºC
10
T
J
= 100ºC
1.0
1.0
0.1
T
J
= 25ºC
.01
Pulse Width=300µs
1% Duty Cycle
.001
.2
.4
.6
.8
1.0
1.2
1.4
.01
20
40
60
80
100
120
PERCENT OF RATED PEAK REVERSE VOLTAGE, (%)
INSTANTANEOUS FORWARD VOLTAGE,(V)
FIG. 5 – MAXINUM NON-REPETITIVE
FOWARD SURGE CURRENT
175
150
PEAK FORWARD SURGE CURRENT,(A)
FIG. 6 – TYPICAL JUNCTION CAPACITANCE
200
8.3ms Single Half Sine-Wave
(JEDEC Method)
JUNCTION CAPACITANCE,(pF)
100
60
SF31 ~
SF34
125
100
75
50
25
0
1
2
5
10
20
50
100
NUMBER OF CYCLES AT 60Hz
40
SF35 ~
SF36
20
10
6
4
2
1
.1
T
J
=25ºC
.2
.4
1.0
2
SF3
5~
SF3
6
.1
SF3
1~S
F34
4
10
20
40
100
REVERSE VOLTAGE,(V)
9A–2/2