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
A
A
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.
SM4933
SM4937
THRU
1.3
V
V
UNITS
V
SM4933 SM4934 SM4935 SM4936 SM4937
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
FEATURES
MECHANICAL DATA
* Low forward voltage drop
* Low leakage current
* High reliability
* Case: Molded plastic
* Epoxy: UL 94V-0 rate flame retardant
* Metallurgically bonded construction
* Polarity: Color band denotes cathode end
* Mounting position: Any
* Weight: 0.015 grams
Operating and Storage Temperature Range T , T
J
STG
C
Dimensions in inches and (millimeters)
SM-1
.105(2.7)
.095(2.4)
.205(5.2)
.190(4.8)
.024(.60)
.018(.46)
SOLDERABLE
ENDS
0.1
1.0
.01
10
50
RATING AND CHARACTERISTIC CURVES (SM4933 THRU SM4937)
FIG.1-TYPICAL FORWARD
CHARACTERISTICS
FIG.2-TYPICAL FORWARD CURRENT DERATING CURVE
A
V
E
R
A
G
E
F
O
R
W
A
R
D
C
U
R
R
E
N
T
,
(
A
)
FIG.5-TYPICAL JUNCTION CAPACITANCE
REVERSE VOLTAGE,(V)
J
U
N
C
T
I
O
N
C
A
P
A
C
I
T
A
N
C
E
,
(
p
F
)
I
N
S
T
A
N
T
A
N
E
O
U
S
F
O
R
W
A
R
D
C
U
R
R
E
N
T
,
(
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
AMBIENT TEMPERATURE ( C)
FIG.3- TEST CIRCUIT DIAGRAM AND REVERSE
RECOVERY TIME CHARACTERISTICS
Tj=25 C
FIG.4-MAXIMUM NON-REPETITIVE FORWARD
SURGE CURRENT
P
E
A
K
F
O
R
W
A
A
R
D
S
U
R
G
E
C
U
R
R
E
N
T
,
(
A
)
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
C1
1.0 F
300V
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
1
2
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 H
+10
0
trr
i(t)
di/dt=50A/ S
0 20 40
60 80 100 120 140 160 180 200
PDF 
ZIP