LESHAN RADIO COMPANY, LTD.
SF21-SF26
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)
3.0
+0.5A
Trr
(+)
25Vdc
(APPROX)
(-)
2.0
OSCILLOSCOPE
NON.
(NOTE 1)
INDUCTIVE
1Ω
1.0
Single Phase
Half Wave 60Hz
Resistive or
Inductive Load
25
50
75
100 125 150
175
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
100
INSTANTANEOUS REVERSE CURRENT (µA)
FIG. 4 - TYPICAL INSTANTANEOUS
FORWARD CHARACTERISTICS
10
T
J
=150ºC
10
T
J
=100ºC
1.0
INSTANTANEOUS FORWARD CURRENT, (A)
T
J
=25ºC
1.0
.1
SF2
6
SF2
5~
0.1
T
J
=25ºC
.01
SF2
1~S
F24
.01
20
40
60
80
100
120
Pulse Width=300µs
1% Duty Cycle
.001
.2
.4
.6
.8
1.0
1.2
1.4
PERCENT OF RATED PEAK REVERSE VOLTAGE, (%)
INSTANTANEOUS FORWARD VOLTAGE,(V)
FIG. 5 - MAXINUM NON-REPETITIVE
FOWARD SURGE CURRENT
90
PEAK FORWARD SURGE CURRENT,(A)
FIG. 6 - TYPICAL JUNCTION CAPACITANCE
75
60
50
45
30
15
8.3msSingleHalfSine-Wave
(JEDECMethod)
JUNCTION CAPACITANCE,(pF)
200
100
60
40
20
10
6
4
2
1
.1
.2
.4
1.0
2
4
10 20
40
100
T
J
=25¡æ
SF25¡«S
F26
SF21¡«S
F24
1
2
5
10
20
50
100
NUMBER OF CYCLES AT 60Hz
REVERSE VOLTAGE,(V)
8A–2/2
LRC [ LESHAN RADIO COMPANY ]
