LESHAN RADIO COMPANY, LTD.
1N4933 – 1N4937
1A 1A FAST RECOVERY DIODES
Maximum Average Maximum Rectified Current Forward Peak @ Half-Wave Surge Current @ Resistive Load 60Hz 8.3ms Superimposed I O@ T L A AV ºC I FM (Surge) A PK Maximum Reverse Current @ PRV @ TA=25ºC I
R
TYPE
Maximum Peak Reverse Voltage PRV V PK
Maximum Forward Voltage @ TA=25ºC I FM A PK V FM V PK
Maximum Reverse Recovery Time Trr ns
Package Dimensions
µAdc
1N4933 1N4934 1N4935 1N4936 1N4937
50 100 200 400 600
1.0
75
30
5.0
1.0
1.2
150
DO – 41
Trr I F = 0.5A, I R = 1.0A, I RR = 0.25A Trr Test Conditions: I F = 0.5A, I R = 1.0A, I RR = 0.25A
1.0(25.4) MIN
.205(5.2) .166(4.2)
1.0(25.4) MIN
.034(0.9) .028(0.7)
DIA .107(2.7) DIA .080(2.0)
DO – 41
13A–1/2
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 C1 I.0µF 300V R2 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
AVERAGE FORWARD CURRENT,(A)
A TEKTRONIX 545A.K PLUG IN PRE AMP P6000 PROBE OR EQUIVALENT R1 ADJUSTED FOR 1.4 Ω¸ BETWEEN POINT 2 OF RELAY AND RECTIFIER INDUCTIVE =38µH
R2 TEN 1W 10Ω¸% CARBON CORE IN PARALLEL TA 25 +10 ºC FOR RECTIFIER O
FIG. 2 – TYPICAL FORWARD CURRENT DERATING CURVE
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)
TJ =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 TJ =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
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