RECTRON
SEMICONDUCTOR
TECHNICAL SPECIFICATION
FM4933W
THRU
FM4937W
SURFACE MOUNT
FAST RECOVERY SILICON RECTIFIER
VOLTAGE RANGE 50 to 600 Volts CURRENT 1.0 Ampere
FEATURES
*
*
*
*
*
Ideal for surface mounted applications
Low leakage current
Metallurgically bonded construction
Mounting position: Any
Weight: 0.057 gram
SMX
MECHANICAL DATA
* Epoxy : Device has UL flammability classification 94V-0
.209 (5.31)
.185 (4.70)
.110 (2.79)
.086 (2.18)
.091 (2.31)
.067 (1.70)
.071 (1.80)
.051 (1.30)
.010 (0.25)
.008 (0.20)
.011 (0.28)
.007 (0.18)
.180 (4.57)
.160 (4.06)
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)
.059 (1.50)
.035 (0.89)
MAXIMUM RATINGS
(At 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 I
FM
(surge): 8.3 ms single half sine-wave
superimposed on rated load (JEDEC method)
Maximum Thermal Resistance
Typical Junction Capacitance (Note 1)
Operating and Storage Temperature Range
ELECTRICAL CHARACTERISTICS
(At T
A
= 25
o
C unless otherwise noted)
CHARACTERISTICS
Maximum Forward Voltage at 1.0A DC
o
Maximum Full Load Reverse Current,Full cycle Average at T
A
= 55 C
Maximum Average Reverse Current at
Rated DC Blocking Voltage
Maximum Reverse Recovery Time (Note 4)
@T
A
= 25
o
C
o
@T
A
= 125 C
SYMBOL
V
F
I
R
trr
FM4933W
FM4934W
FM4935W
1.2
50
5.0
100
200
FM4936W
FM4937W
UNITS
Volts
uAmps
uAmps
uAmps
nSec
2005-11
REV:O
SYMBOL
V
RRM
V
RMS
V
DC
I
O
I
FSM
(Note 3) Rθ
JA
(Note 2) Rθ
JC
C
J
T
J
, T
STG
FM4933W
50
35
50
FM4934W
100
70
100
FM4935W
200
140
200
1.0
30
30
70
15
-55 to + 150
FM4936W
400
280
400
FM4937W
600
420
600
UNITS
Volts
Volts
Volts
Amps
Amps
0
0
C/ W
C/ W
pF
0
C
NOTES : 1. Measured at 1.0 MHz and applied average voltage of 4.0VDC
2. Thermal resistance junction to case.
3. Thermal resistance junction to ambient, 6.0mm
2
copper pads to each terminal.
4. Test Conditions: I
F
= 1.0A, V
R
= 30V.
5.“Fully ROHS compliant”, “100% Sn plating (Pb-free)”.
RATING AND CHARACTERISTIC CURVES ( FM4933W THRU FM4937W )
INSTANTANEOUS REVERSE CURRENT, (uA)AVERAGE FORWARD CURRENT, (A)
FORWARD SURGE CURRENT, (A)
FIG. 1 - TYPICAL FORWARD CURRENT
DERATING CURVE
1.0
.8
.6
.4
.2
0
0
25
50
75 100 125 150 175
AMBIENT TEMPERATURE, ( )
Single Phase
Half Wave 60Hz
Resistive or
Inductive Load
50
40
30
20
10
FIG. 2 - MAXIMUM NON-REPETITIVE FORWARD
SURGE CURRENT
8.3ms Single Half Sine-Wave
(JEDED Method)
0
1
2
4 6 8 10 20
40 6080 100
NUMBER OF CYCLES AT 60Hz
10
4
1.0
.4
.1
.04
INSTANTANEOUS FORWARD CURRENT, (A)
FIG. 3 - TYPICAL REVERSE CHARACTERISTICS
20
10
FIG. 4 - TYPICAL INSTANTANEOUS FORWARD
CHARACTERISTICS
TJ = 25
Pulse Width = 300us
1% Duty Cycle
TJ = 100
1.0
TJ = 25
.01
0
20 40
60
80 100 120 140
PERCENT OF RATED PEAK REVERSE VOLTAGE, (%)
.1
FIG. 5 - TEST CIRCUIT DIAGRAM AND REVERSE RECOVERY
TIME CHARACTERISTIC
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
.01
.6
.8
1.0
1.2
1.4
INSTANTANEOUS FORWARD VOLTAGE, (V)
FIG. 6 - TYPICAL JUNCTION CAPACITANCE
JUNCTION CAPACITANCE, (pF)
30 Vdc
CONSTANT VOLTAGE
SUPPLY
200
100
60
40
20
10
6
4
2
1
.1
.2 .4
1.0 2 4
10 20 40
REVERSE VOLTAGE, ( V )
100
TJ = 25
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
trr
IFM 1.0
i(t)
di/dt = 50A/uS
0
IRM (REC)
SET TIME BASE FOR
50/100 ns/cm
RECTRON
Mounting Pad Layout
0.094 MAX.
(2.38 MAX.)
0.071 MIN.
(1.80 MIN.)
0.052 MIN.
(1.32 MIN.)
0.220
(5.58) REF
Dimensions in inches and (millimeters)
RECTRON
Mouser Electronics
Authorized Distributor
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FM4937W-W FM4934W-W FM4935W-W FM4933W-W FM4936W-W
