Chip Silicon Rectifier
FM4933 THRU FM4937
Fast recovery type
Features
Plastic package has Underwriters Laboratory
Flammability Classification 94V-O Utilizing Flame
Retardant Epoxy Molding Compound.
For surface mounted applications.
Exceeds environmental standards of MIL-S-19500 /
228
Low leakage current.
Mechanical data
Case : Molded plastic, JEDEC DO-214AC
Terminals : Solder plated, s olderable per MIL-STD-750,
Method 2026
Polarity : Indicated by cathode band
Mounting Position : Any
Weight : 0.0015 ounce, 0.05 gr am
(V)
(V)
(V)
(V)
(nS)
(
o
C)
FM4933
F93
50
35
50
FM4934
F94
100
70
100
FM4935
F95
200
140
200
FM4936
F96
400
280
400
FM4937
F97
600
420
600
SYMBOLS
MARKING
CODE
1.2
200
-55 to +150
Operating
temperature
V
RRM
*1
V
RMS
*2
V
R
*3
V
F
*4
T
RR
*5
MAXIMUM RATINGS
(AT T
A
=25
o
C unless otherwise noted)
PARAMETER
CONDITIONS
Symbol
MIN.
TYP.
MAX.
UNIT
Forward rectified current
Ambient temperature = 55
o
C
I
O
1.0
A
Forward surge current
8.3ms single half sine-wave superimposed on
rate load (JEDEC methode)
I
FSM
30
A
V
R
= V
RRM
T
A
= 25
o
C
5.0
uA
V
R
= V
RRM
T
A
= 100
o
C
100
uA
Thermal resistance
Junction to ambient
R
q
JA
75
o
C / w
Diode junction capacitance
f=1MHz and applied 4vDC reverse voltage
C
J
15
pF
Storage temperature
T
J
-55
+150
o
C
Reverse current
I
R
*1 Repetitive peak reverse voltage
*2 RMS voltage
*3 Continuous reverse voltage
*4 Maximum forward voltage
*5 Reverse recovery time
Test condition : I
F
=1.0A, V
R
=30V
PATENT PUBLICATION NO. 37116
0.185(4.8)
0.177(4.4)
0.012(0.3) Typ.
0.110(2.8)
0.094(2.4)
0.165(4.2)
0.150(3.8)
0.067(1.7)
0.060(1.5)
0.040 (1.0) Typ.
0.040(1.0) Typ.
Dimensions in inches and (millimeters)
SMA
0.1
1.0
.01
10
50
RATING AND CHARACTERISTIC CURVES (FM4933 THRU FM4937)
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
FIG.3- TEST CIRCUIT DIAGRAM AND REVERSE
RECOVERY TIME CHARACTERISTICS
W
W
W
W
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
m
F
300V
C1
1.0
m
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
m
H
trr
i(t)
di/dt=50A/
m
S
AMBIENT TEMPERATURE,( C)
FIG.1-TYPICAL FORWARD
P
E
A
K
F
O
R
W
A
R
D
S
U
R
G
E
C
U
R
R
E
N
T
,
(
A
)
P
E
A
K
F
O
R
W
A
R
D
S
U
R
G
E
C
U
R
R
E
N
T
,
(
A
)
W
+10
0
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