LESHAN RADIO COMPANY, LTD.
1N4933 – 1N4937
RATING & CHARACTERISTIC CURVES OF FAST RECOVERY DIODES
FIG.1 - TEST CIRCUIT DIAGRAM AND REVERSE RECOVERY TIME CHARACTERISTIC
38µH/1.4Ω¸
8
115Va 10K
60Hz 2W
7
3
6
C.P.CLARE
HPG1002
5
4
1 AMP
SLO BLO
FUSE
C
1
I.0µF
300V
R
2
1Ω¸
10W
NON
INSUCTIVE
1
2
UNIT
UNDER TEST
1.0Adc FROM
CONSTANT
VOLTAGE SUPPLY
RIPPLE=3mVrms MAX
0
30Ω¸50W
NON
INDUCTIVE
IFM 1.0
Trr
i(t) di/dt=50A/µs
IRM(REC)
1cm
30Vdc
C O N S TA N T
VOLTAGE
SUPPLY
SET TIME BASE
FOR 50/100ns/cm
MINIMIZE ALL LEAS LENGTHS
Zout 1.5Ω¸ MAX
DC to 2KHz
A TEKTRONIX 545A.K PLUG IN PRE AMP
P6000 PROBE OR EQUIVALENT
R
1
ADJUSTED FOR 1.4
Ω¸
BETWEEN
POINT 2 OF RELAY AND RECTIFIER
INDUCTIVE =38µH
R
2
TEN 1W 10Ω¸% CARBON CORE
IN PARALLEL
T
A
25
+10
ºC FOR RECTIFIER
O
FIG. 2 – TYPICAL FORWARD
CURRENT DERATING CURVE
AVERAGE FORWARD CURRENT,(A)
1.0
.8
.6
.4
.2
0
0
50
100
150
175
AMBIENT TEMPER ATURE, (ºC)
Single Phase
Half Wave 60Hz
Resistive or
Inductive Load
FIG. 3 - TYPICAL INSTANTANEOUS FORWARD CHARACTERISTICS
20
10
INSTANTANEOUS FORWARD CURRENT,(A)
T
J
=25ºC
1.0
0.1
Pulse Width=300µs
1% Duty Cycle
.01
.6
.8
1.0
1.2
INSTANTANEOUS FORWARD VOLTAGE,(V)
1.4
FIG. 4 - MAXINUM NON-REPETITIVE
FOWARD SURGE CURRENT
50
PEAK FORWARD SURGE CURRENT,(A)
FIG. 5 - TYPICAL JUNCTION CAPACITANCE
200
JUNCTION CAPACITANCE,(pF)
40
8.3ms Single Half Sine-Wave
(JEDEC Method)
100
60
40
20
10
6
4
2
1
T
J
=25ºC
30
20
10
0
1
2
4
6
8 10
20
40
60 80 100
NUMBER OF CYCLES AT 60Hz
.1
.2
.4
1.0
2
4
10
20
40
100
REVERSE VOLTAGE,(V)
13A–2/2
LRC [ LESHAN RADIO COMPANY ]
