31DF1-31DF2
Super Fast Rectifiers
VOLTAGE RANGE: 100 --- 200 V
CURRENT: 1.6 A
Features
Low cost
Diffused junction
Low leakage
Low forward voltage drop
High current capability
Easily cleaned with alcohol,Isopropanol and
similar solvents
DO - 27
Mechanical Data
Case:JEDEC DO--27,molded plastic
Polarity: Color band denotes cathode
Weight: 0.041ounces,1.15 grams
Mounting position: Any
Dimensions in millimeters
MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS
Ratings at 25
ambient temperature unless otherwise specified.
Single phase,half wave,50Hz,resistive or inductive load. For capacitive load,derate by 20%.
31DF1
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
31DF2
200
140
200
1.6
UNITS
V
V
V
A
V
RRM
V
RMS
V
DC
I
F(AV)
100
70
100
Peak forw ard surge current
10ms single half-sine-w ave
superimposed on rated load
@T
J
=125
I
FSM
125.0
A
Maximum instantaneous forw ard voltage
@ I
F
=1.6A
Maximum reverse current
at rated DC blocking voltage
Maximum reverse recovery time
Typical junction capacitance
Typical thermal resistance
@T =25
A
@T
A
=100
(Note1)
(Note2)
(Note3)
V
F
I
R
t
rr
C
J
R
θ
JA
T
J
T
STG
0.98
5.0
50.0
30
90
34
- 55 ----- + 150
- 55 ----- + 150
V
A
ns
pF
/W
Operating junction temperature range
Storage temperature range
NOTE: 1. Measured with I
F
=0.5A, I
R
=1A, I
rr
=0.25A.
2. Measured at 1.0MH
Z
and applied rev erse v oltage of 4.0V DC.
3. Thermal resistance f rom junction to ambient.
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31DF1-31DF2
Super Fast Rectifiers
Ratings AND Charactieristic Curves
FIG.1 -- TE CIRCUIT DIAGRAM AND REVERSE RE
ST
COVE TIME CHARACTERISTIC
RY
50
N 1.
10
N 1.
t
rr
+0.5A
D.U.T.
0
(+)
25VDC
(approx)
(-)
1
NONIN-
DUCTIVE
PULSE
GENERATOR
(NOTE2)
OSCILLOSCOPE
(NOTE 1)
-0.25A
-1.0A
1cm
NO
TES:1.RISE TIM = 7ns M X
E
A .INPUT IM
PEDA
NCE =1M . 22pF.
JJJJ
2.RISE TIM =10ns M X
E
A .SOURCE IM
PEDA
NCE=50 .
SE TIM BASEFO 10 ns/cm
T E
R
FIG.2 -- TYPICAL FORWARD CHARACTE
RISTIC
INSTANTANEOUS FORWARD CURRENT
AMPERES
100
40
20
10
4.0
2.0
1.0
0.4
0.2
0.1
0.2
0.4
0.6
0.8
FIG.3 -- FORWARD DE
RATING CURVE
AVERAGE FORWARD CURRENT
AMPERES
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
0
25
50
75
100
125
150
Single Phase
Half W 60H
Z
ave
Resistive or
Inductive Load
0.375"(9.5m )Lead Length
m
T
J
=25
Pulse Width=300
µ
s
1.0
1.2
1.4
INST
ANTANEOUS FORWARD VOLTAGE, VOLTS
AMBIENT TEMPERATURE,
FIG.4-- TY
PICAL JUNCTION CAPACITANCE
1000
FIG.5-- PEAK FORWORD SURGE CURRENT
PEAK FORWORD SURGE CURRENT
AMPERES
150
8.3m Single H
s
alf
Sine-W
ave
JUNCTION CAPACITACE, pF
600
400
200
100
60
40
20
125
100
75
T
J
=25
f=1.0M z
H
50
25
0
1
5
10
50
100
10
0.1 0.2
0.4
1
2
4
10
20 40
100
REVERSE VOLT
AGE, VOLTS
NUMBER OF CYCLES AT 60H
Z
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mail:lge@luguang.cn
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