SM4933A
THRU
SM4937A
1.0 AMP SURFACE MOUNT FAST RECOVERY RECTIFIERS
VOLTAGE RANGE
50 to 600 Volts
CURRENT
FEATURES
* Ideal for surface mount applications
* Easy pick and place
* Built-in strain relief
* Fast switching speed
.058(1.47)
.052(1.32)
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)
.177(4.50)
.157(3.99)
.012(0.31)
.006(0.15)
.005
MAX.
(.127)
.208(5.28)
.194(4.93)
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
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
J
, T
STG
NOTES:
SM4933A SM4934A
50
100
35
70
50
100
SM4935A
200
140
200
1.0
30
1.3
5.0
100
200
15
-65 +175
SM4936A SM4937A UNITS
V
400
600
V
280
420
V
400
600
A
A
V
µA
µA
nS
pF
C
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
AVERAGE FORWARD CURRENT,(A)
FIG.2-TYPICAL FORWARD CURRENT DERATING CURVE
50
INSTANTANEOUS FORWARD CURRENT,(A)
1.2
1.0
0.8
0.6
0.4
0.2
0
Single Phase
Half Wave 60Hz
Resistive Or Inductive Load
10
3.0
1.0
Tj=25 C
Pulse Width 300us
1% Duty Cycle
0
20
40
60
80
100
120
140
160
180
200
AMBIENT TEMPERATURE,( C)
0.1
FIG.4-MAXIMUM NON-REPETITIVE FORWARD
SURGE CURRENT
PEAK FORWARD SURGE CURRENT,(A)
50
.01
.6
.8
1.0
1.2
1.4
1.6
1.8
2.0
FORWARD VOLTAGE,(V)
40
FIG.3- TEST CIRCUIT DIAGRAM AND REVERSE
RECOVERY TIME CHARACTERISTICS
10K
2W
115Va
60Hz
C P CLARE
HPG1002
7
6
8
1
2
3
5
4
1 AMP
SLO-BLO
FUSE
30Vdc
CONSTANT VOLTAGE
SUPPLY
C1
1.0
µ
F
300V
R1
3
Ω
25W
30
Tj=25 C
8.3ms Single Half
Sine Wave
JEDEC method
20
30
Ω
/50W
NON-INDUCTIVE
UNIT
UNDER TEST
A
R2
1
Ω
/10W
NON-
INDUCTIVE
1.0Adc FROM
CONSTANT
VOLTAGE SUPPLY
RIPPLE=3mVrms MAX.
10
0
1
5
10
50
100
NUMBER OF CYCLES AT 60Hz
C1
1.0
µ
F
300V
Zout 1
1
/
2
Ω
MAX.
DC To 2KHz
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=3.8
µ
H
FIG.5-TYPICAL JUNCTION CAPACITANCE
35
30
25
20
15
10
5
0
R2- TEN 1W 10
Ω
1% CARBON CORE
IN PARALLEL
TA= 25
+10
C
0
FOR RECTIFIER
IFM 1.0
i(t)
di/dt=50A/
µ
S
trr
0
IRM(REC) 2.0
1cm
SET TIME BASE FOR
50 / 100ns / cm
JUNCTION CAPACITANCE,(pF)
.01
.05
.1
.5
1
5
10
50
100
REVERSE VOLTAGE,(V)
237
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