SM4933-SM4937
Surface Mount Rectifiers
VOLTAGE RANGE: 50 --- 600 V
CURRENT: 1.0 A
Features
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Glass passivated device
Ideal for surface mounted applications
Low leakage
Low forward voltage drop
High current capability
Easily cleaned with Alcohol,Isopropnol
and similar solvents
The plastic material carries U/L
recognition 94V-0
DO-213AB
SOLDERABLE ENDS
D2=D1
＋
0
－
0.20
D1
2.6± 0.15
D2
0.5± 0.1
4.9± 0.2
0.5± 0.1
Mechanical Data
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Case: JEDEC DO-213AB,molded plastic
Polarity: Color band denotes cathode
Weight: 0.0046 ounces, 0.116 grams
Mounting position: Any
Dimensions in millimeters
MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS
Ratings at 25℃ ambient temperature unless otherwise specified.
Single phase,half wave,60 Hz,resistive or inductive load. For capacitive load,derate current by 20%.
SM4933 SM4934 SM4935 SM4936 SM4937
Maximum recurrent peak reverse voltage
Maximum RMS voltage
Maximum DC blocking voltage
Maximum average forward rectified current
@T
A
=55℃
Peak forward surge current
8.3ms single half-sine-wave
superimposed on rated load
Maximum instantaneous forward voltage
@1.0A
Maximum reverse current
@T
A
=25℃
at rated DC blocking voltage @T
A
=125℃
Maximum reverse recovery time (Note1)
Typical junction capacitance (Note2)
Maximum thermal resistance (Note3)
Maximum thermal resistance (Note4)
Operating junction temperature range
Storage temperature range
NOTE: 1. Test conditions:I
F
=1.0A,V
R
=30V.
2. Measured at 1.0MHz and applied reverse voltage of 4.0V DC.
3. Thermal resistance junction to terminal 6.0mm
2
copper pads to each terminal.
4. Thermal resistance junction to ambient 6.0mm
2
copper pads to each terminal.
UNITS
V
V
V
A
V
RRM
V
RMS
V
DC
I
(AV)
50
35
50
100
70
100
200
140
200
1.0
400
280
400
600
420
600
I
FSM
30
A
V
F
I
R
t
rr
C
j
R
θJL
R
θJA
T
j
T
STG
1.2
5.0
100
200
15
30
75
-55 --- + 150
-55 --- + 150
V
µA
ns
pF
℃/W
℃/W
℃
℃
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mail:lge@luguang.cn
SM4933-SM4937
Surface Mount Rectifiers
Ratings AND Charactieristic Curves
FIG.1 -- TEST CIRCUIT DIAGRAM AND REVERSE RECOVERY TIME CHARACTERISTIC
50
N 1.
10
N 1.
t
rr
+0.5A
D.U.T.
0
(+)
25VDC
(approx)
(-)
1
NONIN-
DUCTIVE
PULSE
GENERATOR
(NOTE2)
OSCILLOSCOPE
(NOTE 1)
-0.25A
-1.0A
1cm
NOTES:1.RISE TIME = 7ns MAX.INPUT IMPEDANCE = 1M .22pF.
JJJJJ2.RISE
TIME =10ns MAX.SOURCE IMPEDANCE=50 .
SET TIME BASE FOR 80ns/cm
FIG.2 -- TYPICAL FORWARD CHARACTERISTIC
INSTANTANEOUS FORWARD CURRENT
20
10
TJ = 25
Pulse Width = 300us
1% Duty Cycle
FIG.3 -- FORWARD DERATING CURVE
z
AVERAGE FORWARD CURRENT
AMPERES
1.0
.8
.6
.4
.2
0
0
25
50
75
100 125
150 175
Single Phase
Half Wave 60Hz
Resistive or
Inductive Load
1.0
AMPERES
.1
.01
.6
.8
1.0
1.2
1.4
INSTANTANEOUS FORWARD VOLTAGE, VOLTS
LEAD TEMPERATURE,
FIG.4 -- TYPICAL JUNCTION CAPACITANCE
PEAK FORWARD SURGE CURRENT
FIG.5 -- PEAK FORWARD SURGE CURRENT
JUNCTION CAPACITANCE,pF
200
100
60
40
20
10
6
4
2
1
.1
.2 .4
1.0 2
4
10 20 40
100
TJ = 25
50
40
30
8.3ms Single Half
Sine-Wave
AMPERES
20
10
0
1
5
10
50
100
REVERSE VOLTAGE,VOLTS
NUMBER OF CYCLES AT 60Hz
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