BYTES SM4933A, SM4934A, SM4936A, SM4937A Datasheet
SM4933A SM4937ATHRU
1.0 AMP SURFACE MOUNT FAST RECOVERY RECTIFIERS
VOLTAGE RANGE
FEATURES
* Ideal for surface mount applications
* Easy pick and place
* Built-in strain relief
* Fast switching speed
.058(1.47)
.052(1.32)
50 to 600 Volts
CURRENT
1.0 Ampere
DO-214AC(SMA)
.110(2.79)
.100(2.54)
MECHANICAL DATA
* 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
.090(2.29)
.078(1.98)
.060(1.52)
.030(0.76)
Dimensions in inches and (millimeters)
.177(4.50)
.157(3.99)
.005
(.127)
.208(5.28)
.194(4.93)
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
See Fig. 2
Peak Forward Surge Current, 8.3 ms single half sine-wave
superimposed on rated load (JEDEC method)
Maximum Instantaneous Forward Voltage at 1.0A
Maximum DC Reverse Current Ta=25 C
at Rated DC Blocking Voltage Ta=100 C
Maximum Reverse Recovery Time (Note 1)
Typical Junction Capacitance (Note 2)
Operating and Storage Temperature Range T , TJ STG
SM4933A SM4934A SM4935A SM4936A SM4937A
50 100 200 400 600
35 70 140 280 420
50 100 200 400 600
1.0
30
1.3
5.0
100
200
15
-65 +175
MAX.
.012(0.31)
.006(0.15)
UNITS
V
V
V
A
A
V
µA
µA
nS
pF
C
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.
236
RATING AND CHARACTERISTIC CURVES (SM4933A THRU SM4937A)
FIG.1-TYPICAL FORWARD
CHARACTERISTICS
50
10
3.0
1.0
Tj=25 C
Pulse Width 300us
1% Duty Cycle
0.1
INSTANTANEOUS FORWARD CURRENT,(A)
.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
115Va
60Hz
C P CLARE
HPG1002
30Vdc
CONSTANT VOLTAGE
SUPPLY
A-TEKTRONIX 545A. K PLUG IN R2- TEN 1W 10 1% CARBON CORE
PRE AMP P6000 PROBE OR EQUIVALENT IN PARALLEL
R1- ADJUSTED FOR 14 BETWEEN
POINT 2 OF RELAY AND RECTIFIER TA= 25 C FOR RECTIFIER
INDUCTIVE=3.8 Hµ
1
8
7
2
6
3
4
5
1 AMP
SLO-BLO
FUSE
C1
1.0 F
300V
MINIMIZE ALL LEAD LENGTHS
µ
R1
3
25W
Ω
30 /50W
Ω
NON-INDUCTIVE
UNIT
UNDER TEST
R2
Ω
1 /10W
NONINDUCTIVE
+10
0
A
Ω
C1
1.0 F
300V
µ
1.0Adc FROM
CONSTANT
VOLTAGE SUPPLY
RIPPLE=3mVrms MAX.
1
Ω
Zout 1 / MAX.
2
DC To 2KHz
FIG.2-TYPICAL FORWARD CURRENT DERATING CURVE
1.2
1.0
0.8
0.6
0.4
Single Phase
Half Wave 60Hz
Resistive Or Inductive Load
0.2
AVERAGE FORWARD CURRENT,(A)
0
0 20 40 60 80 100 120 140 160 180 200
AMBIENT TEMPERATURE,( C)
FIG.4-MAXIMUM NON-REPETITIVE FORWARD
SURGE CURRENT
50
40
30
Tj=25 C
20
8.3ms Single Half
Sine Wave
JEDEC method
10
PEAK FORWARD SURGE CURRENT,(A)PEAK FORWARD SURGE CURRENT,(A)
0
1 10 5
NUMBER OF CYCLES AT 60Hz
FIG.5-TYPICAL JUNCTION CAPACITANCE
35
30
50
100
IFM 1.0
IRM(REC) 2.0
25
i(t)
di/dt=50A/ Sµ
trr
0
1cm
SET TIME BASE FOR
50 / 100ns / cm
20
15
10
JUNCTION CAPACITANCE,(pF)
5
0
.01 .05 .1 .5 1 5 10 50 100
REVERSE VOLTAGE,(V)
237
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