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)
1.0
30
5.0
100
200
15
-65 +175
A
V
µA
µA
nS
pF
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.
SM4933A SM4937ATHRU
1.3
V
V
UNITS
V
SM4933A SM4934A SM4935A SM4936A SM4937A
50 100 200 400 600
50 100 200 400 600
35 70 140 280 420
VOLTAGE RANGE
50 to 600 Volts
CURRENT
1.0 Ampere
A
1.0 AMP SURFACE MOUNT FAST RECOVERY RECTIFIERS
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
FEATURES
* Ideal for surface mount applications
* Easy pick and place
* Built-in strain relief
* Fast switching speed
Operating and Storage Temperature Range T , TJ STG C
Dimensions in inches and (millimeters)
.208(5.28)
.194(4.93)
.177(4.50)
.157(3.99)
.012(0.31)
.006(0.15)
.058(1.47)
.052(1.32)
.090(2.29)
.078(1.98)
.060(1.52)
.030(0.76)
.110(2.79)
.100(2.54)
.005
(.127)MAX.
DO-214AC(SMA)
236
0.1
1.0
.01
10
50
RATING AND CHARACTERISTIC CURVES (SM4933A THRU SM4937A)
CHARACTERISTICS
FIG.2-TYPICAL FORWARD CURRENT DERATING CURVE
AVERAGE FORWARD CURRENT,(A)
FIG.5-TYPICAL JUNCTION CAPACITANCE
REVERSE VOLTAGE,(V)
JUNCTION CAPACITANCE,(pF)
INSTANTANEOUS FORWARD CURRENT,(A)
FORWARD VOLTAGE,(V)
Pulse Width 300us
1% Duty Cycle
0.2
0
0.4
0.6
0.8
1.0
1.2
35
30
25
20
15
10
5
0
IFM 1.0
0
IRM(REC) 2.0
1cm
SET TIME BASE FOR
50 / 100ns / cm
.01 .05 .1 .5 1 5 10 50 100
.6 .8 1.0 1.2 1.4 1.6 1.8 2.0
3.0
FIG.3- TEST CIRCUIT DIAGRAM AND REVERSE
RECOVERY TIME CHARACTERISTICS
Ω
Ω
Ω
Ω
Tj=25 C
FIG.4-MAXIMUM NON-REPETITIVE FORWARD
SURGE CURRENT
10
0
20
30
40
50
NUMBER OF CYCLES AT 60Hz
1 10 5 50 100
Tj=25 C 8.3ms Single Half
Sine Wave
JEDEC method
0 20 40 60 80 100 120 140 160 180 200
Single Phase
Half Wave 60Hz
Resistive Or Inductive Load
10K
2W
115Va
60Hz
1
2
3
4
8
7
6
5
C P CLARE
HPG1002
30Vdc
CONSTANT VOLTAGE
SUPPLY
C1
1.0 F
300V
µ
C1
1.0 F
300V
µ
1.0Adc FROM
CONSTANT
VOLTAGE SUPPLY
RIPPLE=3mVrms MAX.
1 AMP
SLO-BLO
FUSE
R1
3
25W
R2
1 /10W
NON-
INDUCTIVE
UNIT
UNDER TEST
30 /50W
NON-INDUCTIVE
Zout 1 / MAX.
DC To 2KHz
12
MINIMIZE ALL LEAD LENGTHS
A
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
trr
i(t) di/dt=50A/ Sµ
AMBIENT TEMPERATURE,( C)
FIG.1-TYPICAL FORWARD
PEAK FORWARD SURGE CURRENT,(A)PEAK FORWARD SURGE CURRENT,(A)
Ω
+10
0
237
