SM4933 THRU SM4937
Features
Mechanical Data
· The plastic package carries Underwrites Laboratory
Flammability Classification 94V-0
· For surface mounted applications
· Glass passivated junction
· High temperature soldering guaranteed : 250℃/10
seconds, at terminals
Maximum Ratings And Electrical Characteristics
· Case : JEDEC MELF(DO-41) molded plastic body
· Terminals : Lead solderable per MIL-STD-750,
method 2026
· Polarity : Color band denotes cathode end
· Mounting Position : Any
· Weight : 0.0041 ounce, 0.116 gram
(Ratings at 25℃ ambient temperature unless otherwise specified, Single phase, half wave 60Hz, resistive or inductive
load. For capacitive load, derate by 20%)
Notes:
(1) Measured at 1MHz and applied reverse voltage of 4.0V DC.
(2) Thermal resistance from junction to ambient.
(3) Reverse recovery test conditions : IF=0.5A, IR=1.0A, IRR=0.25A
CURRENT 1.0 Ampere
VOLTAGE 50 to 600 Volts
Maximum recurrent peak reverse voltage
Maximum RMS voltage
Maximum DC blocking voltage
Volts
Peak forward surge current 8.3ms half sine
wave superimposed on rated load
(JEDEC method)
V
DC
Maximum average forward rectified current
T
A
=75℃
Maximum instantaneous forward voltage at 1.0A
V
RRM
50 Volts
Symbols SM4933 Units
V
F
V
RMS
1.0
AmpsI
FSM
T
J
T
STG
100
150
-55 to +150
-55 to +150 ℃
Volts
Amp
Maximum DC reverse current
at rated DC blocking voltage
Typical thermal resistance (Note 2)
Maximum reverse recovery time (Note 3)
Typical junction capacitance (Note 1)
Operating and storage temperature range
35
50
Volts
μA
℃/W
pF
ns
I
(AV)
I
R
C
J
Rθ
JA
trr
T
A
=25℃
T
A
=100℃
15.0
5.0
30
60
1.2
100
SM4934
70
100
200
SM4935
140
200
400
SM4936
280
400
600
SM4937
420
600
Dimensions in inches and (millimeters)
MELF (DO-41)
0.205(5.20)
0.190(4.80)
0.024(0.60)
0.018(0.46)
SOLDERABLE ENDS
0.105(2.70)
0.095(2.40)
RATINGS AND CHARACTERISTIC CURVES SM4933 THRU SM4937
0 25 50 75 100 125 150 175
FIG.2- MAXIMUM FORWARD CURRENT DERATING
CURVE
AVERAGE FORWARD RECTIFIED
CURRENT AMPERES
O
AMBIENT TEMPERATURE. ( C)
FORWARD VOLTAGE. (V)
0 20 40 60 80 100 120 140
FIG.3- MAXIMUM NON-REPETITIVE FORWARD
SURGE CURRENT
PEAK FORWARD SURGE CURRENT.AMPERES
NUMBER OF CYCLES AT 60Hz
FIG.6- TYPICAL REVERSE CHARACTERISTICS
INSTANTANEOUS REVERSE CURRENT. (mA)
PERCENT OF RATED PEAK REVERSE VOLTAGE. (%)
FIG.4- TYPICAL JUNCTION CAPACITANCE
JUNCTION CAPACITANCE.(pF)
REVERSE VOLTAGE. (V)
O
Tj=25 C
O
Tj=100 C
O
Tj=25 C
1 2 4 6 8 10 20 40 6 0 80 10 0
O
TA=75 C
8.3ms Single Half Sine Wave
JEDEC Method 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0
INSTANTANEOUS FORWARD CURRENT. (A)
O
Tj=25 C
Pulse Width=300us
1% Duty Cycie
100
10
1.0
.10
FIG.1- REVERSE RECOVERY TIME CHARACTERISTIC AND TEST CIRCUIT DIAGRAM
trr
1cm
50
NONINDUCTIVE
10
NONINDUCTIVE
DUT
OSCILLOSCOPE
(NOTE 1)
(+ )
50Vdc
(approx)
(-)
+0.5A
-1.0A
NON
INDUCTIVE
PULSE
GENERATOR
( NOTE 2 ) -0.25A
0
NOTES: 1. Rise Time=7ns max. Input Impedanec=
1 megohm 22pf
2. Rise Time=10ns max. Sourse Impedance=
50 ohms
(+)
(-)
1.0
.8
.6
.4
.2
0
P.C.B. MONTED ON 0.2X0.2"
(5.0X5.0mm)COPPER AREAS PADS
30
20
10
0
1.0 CYCLE
20
10
1
1 10 100
f=1 Mhz
Vsig=50mVp-p
20
10
3.0
1.0
0.3
0.1
.03
.01
SET TIME BASE FOR
5/ 10ns/ cm
FIG.5- TYPICAL FORWARD CHARACTERISTICS
