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SM4933A
THRU
SM4937A
1.0 AMP SURFACE MOUNT FAST RECOVERY RECTIFIERS
VOLTAGE RANGE
50 to 600 Volts
CURRENT
1.0 Ampere
FEATURES
* Ideal for surface mount applications
* Easy pick and place
* Built-in strain relief
* Fast switching speed
DO-214AC(SMA)
.110(2.79)
.100(2.54)
.058(1.47)
.052(1.32)
MECHANICAL DATA
.177(4.50)
.157(3.99)
* Case: Molded plastic
* Epoxy: UL 94V-0 rate flame retardant
* Metallurgically bonded construction
* Polarity: Color band denotes cathode end
* Mounting position: Any
* Weight: 0.063 grams
.012(0.31)
.006(0.15)
.087(2.20)
.071(1.80)
.005
MAX.
(.127)
.205(5.20)
.189(4.80)
.060(1.52)
.030(0.76)
Dimensions in inches and (millimeters)
MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS
Rating 25 C ambient temperature uniess otherwies specified.
Single phase half wave, 60Hz, resistive or inductive load.
For capacitive load, derate current by 20%.
TYPE NUMBER
Maximum Recurrent Peak Reverse Voltage
Maximum RMS Voltage
Maximum DC Blocking Voltage
Maximum Average Forward Rectified Current
SM4933A SM4934A
50
100
35
70
50
100
SM4935A
200
140
200
SM4936A SM4937A UNITS
V
400
600
V
280
420
V
400
600
.375"(9.5mm) Lead Length at Ta=55 C
Peak Forward Surge Current, 8.3 ms single half sine-wave
1.0
A
superimposed on rated load (JEDEC method)
Maximum Instantaneous Forward Voltage at 1.0A
Maximum DC Reverse Current
Ta=25 C
30
1.3
5.0
A
V
mA
100
200
15
-65 +175
mA
nS
at Rated DC Blocking Voltage
Ta=100 C
Maximum Reverse Recovery Time (Note 1)
Typical Junction Capacitance (Note 2)
Operating and Storage Temperature Range TJ, TSTG
NOTES:
1. Reverse Recovery Time test condition:IF=1.0A, VR=30V.
2. Measured at 1MHz and applied reverse voltage of 4.0V D.C.
244
pF
C
RATING AND CHARACTERISTIC CURVES (SM4933A THRU SM4937A)
FIG.1-TYPICAL FORWARD
FIG.2-TYPICAL FORWARD CURRENT DERATING CURVE
AVERAGE FORWARD CURRENT,(A)
CHARACTERISTICS
10
3.0
1.0
1.2
1.0
0.8
Single Phase
0.6
Half Wave 60Hz
Resistive Or Inductive Load
0.4
0.2
0
0
20
40
60
Tj=25 C
80
100
120
140
160
180
200
AMBIENT TEMPERATURE,( C)
Pulse Width 300us
1% Duty Cycle
0.1
.01
.6
.8
1.0
1.2
1.4
1.6
1.8
2.0
FORWARD VOLTAGE,(V)
FIG.3- TEST CIRCUIT DIAGRAM AND REVERSE
RECOVERY TIME CHARACTERISTICS
10K
2W
1
8
115Va
60Hz
2
7
3
30 W/50W
NON-INDUCTIVE
R1
3W
25W
UNIT
UNDER TEST
6
C P CLARE
HPG1002
4
5
1 AMP
SLO-BLO
FUSE
30Vdc
CONSTANT VOLTAGE
SUPPLY
C1
1.0mF
300V
A
R2
1W /10W
NONINDUCTIVE
+10
0
30
8.3ms Single Half
Tj=25 C
Sine Wave
20
JEDEC method
10
5
50
10
100
NUMBER OF CYCLES AT 60Hz
C1
1.0mF
300V
Zout 11/2WMAX.
DC To 2KHz
FIG.5-TYPICAL JUNCTION CAPACITANCE
35
C FOR RECTIFIER
IFM 1.0
i(t)
40
1
R2- TEN 1W 10W 1% CARBON CORE
IN PARALLEL
TA= 25
50
0
1.0Adc 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 14 BETWEEN
POINT 2 OF RELAY AND RECTIFIER
INDUCTIVE=3.8mH
PEAK FORWARD SURGE CURRENT,(A)
FIG.4-MAXIMUM NON-REPETITIVE FORWARD
SURGE CURRENT
di/dt=50A/mS
trr
0
JUNCTION CAPACITANCE,(pF)
INSTANTANEOUS FORWARD CURRENT,(A)
50
30
25
20
15
10
5
IRM(REC) 2.0
0
1cm
.01
.05
.1
.5
1
SET TIME BASE FOR
REVERSE VOLTAGE,(V)
50 / 100ns / cm
245
5
10
50
100