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FEATURES
GALAXY ELECTRICAL
SF31 - - - SF38
VOLTAGE RANGE: 50 ---
600
V
CURRENT: 3.0 A
SUPER FAST RECTIFIER
Low cost
Low leakage
Low forward voltage drop
High current capability
Easily cleaned with alcohol,Isopropanol
and similar solvents
The plastic material carries U/L recognition 94V-0
DO - 27
MECHANICAL DATA
Case:JEDEC DO--27,molded plastic
Terminals: Axial lead ,solderable per
MIL- STD-202,Method 208
Polarity: Color band denotes cathode
Weight: 0.041 ounces,1.15 grams
Mounting position: Any
MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS
Ratings at 25
ambient temperature unless otherwise specified.
Single phase,half wave,60 Hz,resistive or inductive load. For capacitive load,derate by 20%.
SF31
Maximum recurrent peak reverse voltage
Maximum RMS voltage
Maximum DC blocking voltage
Maximum average forw ard rectified current
9.5mm lead length,
@T
A
=75
SF32
100
70
100
SF33 SF34
150
105
150
200
140
200
3.0
SF35 SF36
SF37 SF38
UNITS
300
210
300
400
280
400
500
350
500
600
420
600
V
V
V
A
V
RRM
V
RMS
V
DC
I
F(AV)
50
35
50
Peak forw ard surge current
8.3ms single half-sine-w ave
superimposed on rated load
@T
J
=125
I
FSM
125.0
A
Maximum instantaneous forw ard voltage
@ 3.0A
Maximum reverse current
@T
A
=25
V
F
I
R
t
rr
C
J
R
θ
JA
T
J
T
STG
0.95
5.0
50.0
35
100
20
- 55 ----- + 150
- 55 ----- + 150
1.3
1.7
V
A
ns
at rated DC blocking voltage @T
A
=100
Maximum reverse recovery time
Typical junction capacitance
Typical thermal resistance
(Note1)
(Note2)
(Note3)
50
pF
/W
Operating junction temperature range
Storage temperature range
NOTE: 1. Measured with I
F
=0.5A, I
R
=1A, I
rr
=0.25A.
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2. Measured at 1.0MH
Z
and applied rev erse v oltage of 4.0V DC.
3. Thermal resistance f rom junction to ambient.
Document Number 0264003S
BL
GALAXY ELECTRICAL
1.
RATINGS AND CHARACTERISTIC CURVES
FIG.1 -- TEST CIRCUIT DIAGRAM AND REV ERSE RECOVERY TIM E CHARACTERISTIC
t
rr
50
N 1.
10
N 1.
SF31 - - - SF38
+ 0 .5 A
D.U.T.
(+)
25VDC
(approx)
(-)
1
NONIN-
DUCTIVE
PULSE
GENERATOR
(NOTE2)
OSCILLOSCOPE
(NOTE 1)
0
-0 .2 5 A
-1 .0 A
1 c m
N OTES:1 .R ISE TIME = 7n s MAX.IN PU T IMPED AN C E = 1M .2 2p F.
JJJJJ2.R
ISE TIME =10 ns MAX.SOU R C E IMPED AN C E=5 0 .
SE T TIM E BA SE FOR 10 ns/cm
FIG.2 -- TYPICAL FORW ARD CHARACTERISTIC
INSTANTANEOUS FORWARD CURRENT
FIG.3 -- FORW ARD DERATING CURVE
z
SF35-SF36
AVERAGE FORWARD CURRENT
4.0
6.0
5.0
Single Phase
Half Wave 60H
Z
Resistive or
Inductive Load
0.375"(9.5mm)Lead Length
SF31-SF34
AMPERES
3.0
AMPERES
4.0
3.0
2.0
1.0
0
0
SF37-SF38
2.0
1.0
0.5 0.7 0.9 1.1 1.3
1.5 1.7 1.9
25
50
75
100
125
150
175
INSTA NTANE OUS FORW ARD VOLTAGE , VOLTS
A M BIENT TE M P ERA TURE,
FIG.4 -- TYPICAL JUNCTION CAPACITANCE
FIG.5 -- PEAK FORW ARD SURGE CURRENT
PEAK FORWARD SURGE CURRENT
JUNCTION CAPACITANCE,pF
200
100
60
40
20
10
6
4
T
J
=25
SF35 - SF38
SF31 - SF34
175
150
125
AMPERES
8.3m Single Half
s
Sine-W
ave
100
75
50
25
0
1
5
10
50
100
2
1
0.1 0.2
0.4
1
2
4
10
20
40
100
REV ERS E V OLTA GE ,VOLTS
NUM B ER OF CYCLES AT 60Hz
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Document Number 0264003S
BL
GALAXY ELECTRICAL
2.
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