RECTRON
SEMICONDUCTOR
TECHNICAL SPECIFICA TION
* 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 oC ambient temperature unless otherwis e 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 TA = 25oC unless otherwise noted)
SURFACE MOUNT GLASS PASSIVATED
VOLTAGE RANGE 50 to 600 Volts CURRENT 1.0 Ampere
FAST RECOVERY SILICON RECTIFIER
ELECTRICAL CHARACTERISTICS
(At TA = 25oC unless otherwise noted)
NOTES : 1. Measured at 1.0 MHz and applied average voltage of 4.0VDC
2. Thermal resistance junction to terminal 6.0mm2 copper pads to each terminal.
3. Thermal resistance junction to ambient, 6.0mm2 copper pads to each terminal.
4. Test Conditions: IF = 1.0A, VR = 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 θ
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 θ
JA
SM4933 SM4935 SM4936 SM4937SM4934
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
C5.0
200
uAmps
UNITS
Volts
SM4933 SM4935 SM4936 SM4937SM4934
MECHANICAL DA TA
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
124
68 10 20 40 6080100
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
00 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
54
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)
RECTRON
Mounting Pad Layout
.100 (2.54)
.200 (5.08)
.300 (7.62)
.100 (2.54)
.100 (2.54) F-SLOT WIDTH
OPTIMUM PAD SIZE
Dimensions in inches and (millimeters)