VOLTAGE RANGE 50 to 600 Volts CURRENT 1.0 Ampere
FEATURES
*
*
*
*
*
*
Glass passivated device
Ideal for surface mounted applications
Low leakage current
Metallurgically bonded construction
Mounting position: Any
Weight: 0.015 gram
SURFACE MOUNT GLASS PASSIVATED
FAST RECOVERY SILICON RECTIFIER
SM4933
THRU
SM4937
MECHANICAL DATA
DISCONTINUED-
* Epoxy : Device has UL flammability classification 94V-0
D
co
is
ed
nu
ti
n
.205 ( 5.2 )
.190 ( 4.8 )
SOLDERABLE
ENDS
MELF
"This series is replaced by the FM493X series that meets to the same
fit and function parameters and share the same solder pad layout.
The FM493X series is preferred for error-free vacuum pick-up and
PCB assembly.＂
.024 ( 0.6 )
.016 ( 0.4 )
.106 ( 2.7 )
.095 ( 2.4 )
MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS
Ratings at 25
o
C ambient temperature unless otherwise specified.
Single phase, half wave, 60 Hz, resistive or inductive load.
For capacitive load, derate current by 20%.
Dimensions in inches and (millimeters)
MAXIMUM RATINGS
(@ T
A
=25
O
C unless otherwise noted)
RATINGS
Maximum Recurrent Peak Reverse Voltage
Maximum RMS Voltage
Maximum DC Blocking Voltage
Maximum Average Forward Rectified Current
at T
A
= 55
O
C
Peak Forward Surge Current 8.3 ms single half sine-wave
superimposed on rated load (JEDEC method)
Typical Junction Capacitance (Note 2)
Operating Temperature Range
Storage Temperature Range
SYMBOL
V
RRM
V
RMS
V
DC
I
O
I
FSM
C
J
T
J
T
STG
SM4933
50
35
50
SM4934
100
70
100
SM4935
200
140
200
1.0
30
15
150
-55 to + 150
SM4936
400
280
400
SM4937
600
420
600
UNITS
Volts
Volts
Volts
Amps
Amps
pF
0
0
C
C
ELECTRICAL CHARACTERISTICS
(@T
A
=25
O
C unless otherwise noted)
CHARACTERISTICS
Maximum Instantaneous Forward Voltage at 1.0A DC
Maximum Full Load Reverse Current, Full
cycle Average T
A
=55
O
C
Maximum Average Reverse Current
at Rated DC Blocking Voltage
@T
A
= 25
o
C
@T
A
= 100 C
trr
o
SYMBOL
V
F
I
R
SM4933
SM4934
SM4935
1.2
50
2
100
200
SM4936
SM4937
UNITS
Volts
mA
uA
uA
nSec
2007-5
Maximum Reverse Recovery Time (Note 4)
NOTES : 1. Measured at 1 MHz and applied reverse voltage of 4.0 volts.
2. “Fully ROHS compliant”, “100% Sn plating (Pb-free)”.
3. Test Conditions: I
F
= 0.5A, I
R
= -1.0A, I
RR
= -0.25A.
RATING AND CHARACTERISTICS CURVES ( SM4933 THRU SM4937 )
IFM 1.0
8
115Va 10K
60Hz 2W 7
6
C.P.CLARE
HPG 1002
5
4
1 AMP
SLO-BLO
FUSE
C1
1.0uF
300V
1
2 3.8uH
3 /1.4
30
50W
NON-INDUCTIVE
UNIT
UNDER TEST
1.0 Adc FROM
CONSTANT
R2
VOLTAGE SUPPLY
C1
1
RIPPLE = 3mVrms MAX
1.0uF
10W
300V
NON-
INDUCTIVE
Zout 11/2 MAX
DC to 2kHz
% CARBON CORE
FOR RECTIFIER
trr
i(t)
di/dt = 50A/mS
0
30 Vdc
CONSTANT VOLTAGE
SUPPLY
MINIMIZE ALL LEAD LENGTHS
A-TEKTRONIX 545A. K PLUG IN
PRE AMP P6000 PROBE OR EQUIVALENT R2-TEN-1W 10
IN PARALLEL
R1-ADJUSTED FOR 1.4£[ BETWEEN
POINT 2 OF RELAY AND RECTIFIER
10
TA = 25
INDUCTIVE = 3.8uH
0
IRM (REC)
1cm
SET TIME BASE FOR 50/100 ns/cm
FIG.1 TEST CIRCUIT DIAGRAM AND REVERSE RECOVERY TIME CHARACTERISTIC
1.0
AVERAGE FORWARD CURRENT, (A)
INSTANTANEOUS REVERSE CURRENT, (uA)
1000
0.8
0.6
0.4
0.2
0
Single Phase
Half Wave 60Hz
Resistive or
Inductive Load
100
T
A
= 100
O
C
T
A
= 75
O
C
10
1.0
T
A
= 25
O
C
0
25
50
75
100
125
150
175
0.1
0
20
40
60
80
100
120
140
AMBIENT TEMPERATURE, (
O
C)
PERCENT OF RATED PEAK REVERSE VOLTAGE, (%)
FIG.2 TYPICAL FORWARD CURRENT
DERATING CURVE
FIG.3 TYPICAL REVERSE
CHARACTERISTICS
RATING AND CHARACTERISTICS CURVES ( SM4933 THRU SM4937 )
INSTANTANEOUS FORWARD CURRENT, (A)
PEAK FORWARD SURGE CURRENT, (A)
20
10
3.0
1.0
0.3
0.1
0.03
0.01
0
200
150
125
100
T
J
= 25 C
O
8.3ms Single Half Sine-Wave
(JEDED Method)
50
30
20
10
Pulse Width=300uS
1% Duty Cycle
0.5
1.0
1.5
2.0
2.5
3.0
3.5
1
5
10
50
100
INSTANTANEOUS FORWARD VOLTAGE, (V)
NUMBER OF CYCLES AT 60Hz
FIG.4 TYPICAL INSTANTANEOUS FORWARD
CHARACTERISTICS
200
JUNCTION CAPACITANCE, (pF)
FIG.5 MAXIMUM NON-REPETITIVE FORWARD
SURGE CURRENT
100
60
40
20
10
6
4
2
1
0.1 0.2
0.4
1.0
2
4
10
T
J
= 25
O
C
20
40
100
REVERSE VOLTAGE, (V)
FIG.6 TYPICAL JUNCTION CAPACITANCE
Mounting Pad Layout
.100 (2.54)
F-SLOT WIDTH
OPTIMUM PAD SIZE
.100 (2.54)
.100 (2.54)
.200 (5.08)
.300 (7.62)
Dimensions in inches and (millimeters)
DISCLAIMER NOTICE
Rectron Inc reserves the right to make changes without notice to any product
specification herein, to make corrections, modifications, enhancements or other
changes. Rectron Inc or anyone on its behalf assumes no responsibility or liabi-
lity for any errors or inaccuracies. Data sheet specifications and its information
contained are intended to provide a product description only. "Typical" paramet-
ers which may be included on RECTRON data sheets and/ or specifications ca-
n and do vary in different applications and actual performance may vary over ti-
me. Rectron Inc does not assume any liability arising out of the application or
use of any product or circuit.
Rectron products are not designed, intended or authorized for use in medical,
life-saving implant or other applications intended for life-sustaining or other rela-
ted applications where a failure or malfunction of component or circuitry may di-
rectly or indirectly cause injury or threaten a life without expressed written appr-
oval of Rectron Inc. Customers using or selling Rectron components for use in
such applications do so at their own risk and shall agree to fully indemnify Rect-
ron Inc and its subsidiaries harmless against all claims, damages and expendit-
ures.
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