RECTRON
SEMICONDUCTOR
TECHNICAL SPECIFICATION
* Fast switching
* Glass passivated device
* Ideal for surface mounted applications
* Low leakage current
* Metallurgically bonded construction
* Mounting position: Any
* Weight: 0.015 gram
MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS
Ratings at 25
o
C ambient temperature unless otherwise specified.
Single phase, half wave, 60 Hz, resistive or inductive load.
For capacitive load, derate current by 20%.
SM4933
THRU
SM4937
MELF
MAXIMUM RATINGS (At T
A
= 25
o
C unless otherwise noted)
SURFACE MOUNT GLASS PASSIVATED
VOLTAGE RANGE 50 to 600 Volts CURRENT 1.0 Ampere
FAST RECOVERY SILICON RECTIFIER
ELECTRICAL CHARACTERISTICS (At T
A
= 25
o
C unless otherwise noted)
NOTES : 1. Measured at 1.0 MHz and applied average voltage of 4.0VDC
2. Thermal resistance junction to terminal 6.0mm
2
copper pads to each terminal.
3. Thermal resistance junction to ambient, 6.0mm
2
copper pads to each terminal.
4. Test Conditions: I
F
= 1.0A, V
R
= 30V.
Dimensions in inches and (millimeters)
2002-10
RATINGS
Maximum Recurrent Peak Reverse Voltage
Maximum RMS Voltage
Maximum DC Blocking Voltage
Maximum Average Forward Rectified Current T
A
= 55
o
C
Peak Forward Surge Current I
FM
(surge): 8.3 ms single half sine-wave
superimposed on rated load (JEDEC method)
Typical Junction Capacitance (Note 1)
Operating and Storage Temperature Range
SYMBOL
V
RRM
V
DC
I
O
I
FSM
C
J
T
J
, T
STG
V
RMS
Amps
30
75
-55 to + 150
0
C / W
pF
0
C
UNITS
Volts
Volts
Maximum Thermal Resistance
(Note 2) R
JL
100
200
400
600
50
100
200
400
600
35
70
140
280
420
30
Volts
Amps
15
0
C / W
(Note 3) R
JA
SM4933
SM4935
SM4936
SM4937
SM4934
50
1.0
CHARACTERISTICS
Maximum Reverse Recovery Time (Note 4)
V
F
SYMBOL
I
R
trr
1.2
50
100
uAmps
uAmps
nSec
Maximum Full Load Reverse Current,Full cycle Average at T
A
= 55
o
C
Maximum Forward Voltage at 1.0A DC
Maximum Average Reverse Current at
Rated DC Blocking Voltage
@T
A
= 25
o
C
@T
A
= 125
o
C
5.0
200
uAmps
UNITS
Volts
SM4933
SM4935
SM4936
SM4937
SM4934
MECHANICAL DATA
FEATURES
* Epoxy : Device has UL flammability classification 94V-0
.095 (2.4)
.106 (2.7)
.028 (.60)
.018 (.46)
.190 (4.8)
.205 (5.2)
SOLDERABLE
ENDS
RECTRON
RATING AND CHARACTERISTIC CURVES ( SM4933 THRU SM4937 )
JUNCTION CAPACITANCE,
(pF
)
FIG. 6 - TYPICAL JUNCTION CAPACITANCE
REVERSE VOLTAGE, ( V )
200
100
60
40
20
10
6
4
2
1
.1
.2 .4
1.0 2
4
10
20 40
100
TJ = 25
FIG. 2 - MAXIMUM NON-REPETITIVE FORWARD
FORWARD SURGE CURRENT, (A)
NUMBER OF CYCLES AT 60Hz
SURGE CURRENT
1
2
4
6 8 10
20
40 60 80100
50
40
30
20
10
0
8.3ms Single Half Sine-Wave
(JEDED Method)
FIG. 5 - TEST CIRCUIT DIAGRAM AND REVERSE RECOVERY
TIME CHARACTERISTIC
FIG. 1 - TYPICAL FORWARD CURRENT
AVERAGE FORWARD CURRENT, (A)
AMBIENT TEMPERATURE, ( )
DERATING CURVE
1.0
.8
.6
.4
.2
0
0
25
50
75
100 125
150
175
Single Phase
Half Wave 60Hz
Resistive or
Inductive Load
TJ = 100
TJ = 25
FIG. 3 - TYPICAL REVERSE CHARACTERISTICS
INSTANTANEOUS REVERSE CURRENT, (uA)
PERCENT OF RATED PEAK REVERSE VOLTAGE, (%)
0
20
40
60
80
100
120 140
.01
.04
.1
.4
10
1.0
4
FIG. 4 - TYPICAL INSTANTANEOUS FORWARD
CHARACTERISTICS
INSTANTANEOUS FORWARD CURRENT, (A)
INSTANTANEOUS FORWARD VOLTAGE, (V)
TJ = 25
Pulse Width = 300us
1% Duty Cycle
.6
.8
1.0
1.2
1.4
20
10
1.0
.1
.01
8
7
6
5
4
3
2
1
115Va 10K
60Hz 2W
C.P.CLARE
HPG 1002
30 Vdc
CONSTANT VOLTAGE
SUPPLY
3.8uH
/1.4
1 AMP
SLO-BLO
FUSE
C1
1.0uF
300V
30
50W
NON-INDUCTIVE
UNIT
UNDER TEST
R2
1
10W
NON-
INDUCTIVE
C1
1.0uF
300V
1.0 Adc FROM
CONSTANT
VOLTAGE SUPPLY
RIPPLE = 3mVrms MAX
MINIMIZE ALL LEAD LENGTHS
A-TEKTRONIX 545A. K PLUG IN
PRE AMP P6000 PROBE OR EQUIVALENT
R1-ADJUSTED FOR 1.4 BETWEEN
POINT 2 OF RELAY AND RECTIFIER
INDUCTIVE = 3.8uH
Zout 11/2 MAX
DC to 2kHz
R2-TEN-1W 10 % CARBON CORE
IN PARALLEL
TA = 25 FOR RECTIFIER
10
0
SET TIME BASE FOR
50/100 ns/cm
trr
di/dt = 50A/uS
IFM 1.0
0
IRM (REC)
i(t)
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