LUGUANG USF33

USF31-USF34
Super Fast Rectifiers
VOLTAGE RANGE: 50 --- 200 V
CURRENT: 3.0 A
DO - 27
Features
Low cost
Low leakage
Low forward voltage drop
High current capability
Easily cleaned with alcohol,Isopropanol
and similar solvents
The plastic material carries U/L recognition 94V-0
Mechanical Data
Case:JEDEC DO--27,molded plastic
Terminals: Axial lead ,solderable per
MIL- STD-202,Method 208
Dimensions in millimeters
Polarity: Color band denotes cathode
Weight: 0.041 ounces,1.15 grams
Mounting position: Any
MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS
Ratings at 25
ambient temperature unless otherwise specified.
Single phase,half wave,60Hz,resistive or inductive load. For capacitive load,derate by 20%.
USF31
USF32
USF33
USF34
UNITS
Maximum recurrent peak reverse voltage
VRRM
50
100
150
200
V
Maximum RMS voltage
VRMS
35
70
105
140
V
Maximum DC blocking voltage
VDC
50
100
150
200
V
Maximum average forw ard rectified current
9.5mm lead length,
@TA=75
IF(AV)
3.0
A
IFSM
125.0
A
VF
0.92
V
Peak forw ard surge current
8.3ms single half-sine-w ave
superimposed on rated load
@TJ =125
Maximum instantaneous forw ard voltage
@ 3.0A
Maximum reverse current
at rated DC blocking voltage
@TA=25
@TA=100
IR
10.0
500.0
A
Maximum reverse recovery time (Note1)
trr
20
ns
Typical junction capacitance
(Note2)
CJ
20
pF
Typical thermal resistance
(Note3)
RθJA
20
TJ
- 55 ----- + 150
TSTG
- 55 ----- + 150
Operating junction temperature range
Storage temperature range
NOTE: 1. Measured with I F=0.5A, I R=1A, I rr=0.25A.
2. Measured at 1.0MHz and applied rev erse v oltage of 4.0V DC.
3. Thermal resistance f rom junction to ambient.
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USF31-USF34
Super Fast Rectifiers
Ratings AND Charactieristic Curves
FIG.1 -- TEST CIRCUIT DIAGRAM AND REVERSE RECOVERY TIME CHARACTERISTIC
trr
50
N 1.
+0.5A
10
N 1.
0
D.U.T.
PULSE
GENERATOR
(NOTE2)
(+)
25VDC
(approx)
(-)
-0 .2 5A
OSCILLOSCOPE
(NOTE 1)
1
NONINDUCTIVE
-1 .0 A
1 cm
NOTES:1.RISE TIME = 7ns MAX.INPUT IMPEDANCE = 1M .22pF.
JJJJJ2.RISE TIME =10ns MAX.SOURCE IMPEDANCE=50 .
SET TIME BASE FOR 10/20 ns/cm
TJ=25
P u ls e W id th = 3 0 0 µ s
4
2
1
0 .4
0 .2
0 .1
0 .0 4
0 .0 2
0 .0 1
0 0 .2
0 .4 0 .6
0 .8
1 .0 1 .2
1 .4
INSTANTANEOUS FORWARD VOLTAGE, VOLTS
FIG.3 -- FORWARD DERATING CURVE
AVERAGE FORWARD CURRENT
AMPERES
100
40
20
10
CURRENT, AMPERES
INSTANTANEOUS FORWARD
FIG.2 -- TYPICAL FORWARD CHARACTERISTIC
100
60
40
20
10
6
4
TJ=25
f=1.0MHZ
2
1 0.2
0.1
0.4
1
2
4
10
20
40
100
REVERSE VOLTAGE,VOLTS
Single Phase
Half Wave 60HZ
Resistive or
Inductive Load
0.375"(9.5mm)Lead Length
5
4
3
2
1
0
0
25
50
75
100
8.3ms Single Half
Sine-Wave
125
100
75
50
25
0
1
5
10
CURRENT, MICROAMPERES
INSTANTANEOUS REVERSE
T J= 1 5 0
T J= 1 0 0
.1
T J= 2 5
40
60
80
100 120 140
PERCENT OF RATED PEAK REVERSE VOLTAGE,
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50
100
NUMBER OF CYCLES AT 60Hz
10
20
175
150
100
.0 1
0
150
AMBIENT TEMPERATURE,
FIG.6 -- TYPICAL REVERSE CHARACTERISTICS
1
125
FIG.5 -- PEAK FORWARD SURGE CURRENT
PEAK FORWARD SURGE
CURRENT, AMPERES
JUNCTION CAPACITANCE,pF
FIG.4 -- TYPICAL JUNCTION CAPACITANCE
z
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