1N4942 THRU 1N4948
FAST RECOVERY RECTIFIER
Reverse Voltage - 200 to 1000 Volts Forward Current - 1.0 Ampere
FEATURES
MECHANICAL DATA
* High switching capability
* Low leakage
* Low forward voltage drop
* High current capability
* High surge current capability
Case : JEDEC DO-204AL molded plastic
Epoxy : UL 94V-O rate flame retardant
Lead : MIL-STD-202F method 208C guaranteed
Mounting Position : Any
Weight : 0.33 gram
MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS
Ratings at 25
o
C ambient temperature
unless otherwise specified.
Maximum repetitive peak reverse voltage
Maximum RMS voltage
Maximum average forward rectified current at T
A
=75
o
C
Peak forward surge current 8.3ms single half sine-wave
superimposed on rated load (JEDEC Method)
Maximum instantaneous forward voltage at 1.0 A
Maximum DC reverse current
at rated DC blocking voltage
T
A
=25
o
C
Typical junction capacitance ( NOTE 1 )
Operating junction and storage temperature range
SYMBOLS
V
RRM
V
RMS
V
DC
I
(AV)
I
FSM
V
F
I
R
C
J
T
J
,T
STG
1.0
30
1.3
5.0
15
-65 to +150
UNITS
Volts
Volts
Maximum DC blocking voltage
1N4942
200
140
200
1N4944
400
280
400
1N4946
600
420
600
1N4947
800
560
800
1N4948
1000
700
1000
Volts
Volts
Maximum full load reverse current, full cycle
average 0.375" (9.5mm) lead length at T
L
=55
o
C
I
R(AV)
100
uA
Amps
Amps
uA
pF
Maximum reverse recovery time ( NOTE 2 )
trr
250
150
500
nS
o
C
Zowie Technology Corporation
REV. : 0
DO-204AL
*Dimensions in inches and (millimeters)
1
.
0
(
2
5
.
4
)
M
I
N
.
1
.
0
(
2
5
.
4
)
M
I
N
.
0.107(2.7)
0.034(0.86)
0.028(0.71)
0
.
2
0
5
(
5
.
2
)
0
.
1
6
0
(
4
.
1
)
0.080(2.0)
DIA.
DIA.
NOTES : (1) Measured at 1.0 MHz and applied reverse voltage of 4.0 Volts
(2) Test conditions : I
F
0.5A, I
R
=1.0A, I
RR
=0.25A
RATINGS AND CHARACTERISTIC CURVES 1N4942 THRU 1N4948
Zowie Technology Corporation
REV. : 0
FIG.1 - FORWARD CURRENT DERATING CURVE
FIG.3 - TYPICAL INSTANTANEOUS
FORWARD CHARACTERISTICS
A
V
E
R
A
G
E
F
O
R
W
A
R
D
R
E
C
T
I
F
I
E
D
C
U
R
R
E
N
T
,
A
M
P
E
R
E
S
1.2
1.0
0.8
0.6
0.4
0.2
I
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
M
P
E
R
E
S
0.10
1.00
10.00
0.01
0.4
0.6
0.8
1.0
1.2
1.4
1.6
0
0
25
50
75
100
125
150
175
Single Phase
Half Wave 60Hz
Resistive or
Inductive Load
PULSE WIDTH=300uS
1% DUTY CYCLE
AMBIENT TEMPERATURE,
o
C
INSTANTANEOUS FORWARD VOLTAGE,
VOLTS
FIG.2 - MAXIMUM NON-REPETITIVE
PEAK FORWARD SURGE CURRENT
P
E
A
K
F
O
R
W
A
R
D
S
U
R
G
E
C
U
R
R
E
N
T
,
A
M
P
E
R
E
S
NUMBER OF CYCLES AT 60Hz
8.3ms SINGLE HALF SINE-WAVE
(JEDEC Method)
0
10
20
30
40
50
1
10
100
FIG.4 - TYPICAL REVERSE CHARACTERISTICS
PERCENT OF RATED PEAK REVERSE VOLTAGE,%
I
N
S
T
A
N
T
A
N
E
O
U
S
R
E
V
E
R
S
E
L
E
A
K
A
G
E
C
U
R
R
E
N
T
,
M
I
C
R
O
A
M
P
E
R
E
S
0.01
0
20
0.1
1.0
10
20
T
J
=25
o
C
T
J
=75
o
C
T
J
=125
o
C
40
60
80
100
120
140
FIG.5 - TYPICAL JUNCTION CAPACITANCE
FIG.6 - TEST CIRCUIT DIAGRAM AND REVERSE
RECOVERY TIME CHARACTERISTICS
T
J
= 25
o
C
REVERSE VOLTAGE, VOLTS
.1
1
J
U
N
C
T
I
O
N
C
A
P
A
C
I
T
A
N
C
E
,
p
F
40
200
.2
.4
1.0
2
4
10
20 40
100
2
4
10
6
20
60
100
50
NONINDUCTIVE
1
NON-
INDUCTIVE
10
NONINDUCTIVE
( + )
25 Vdc
( approx )
( - )
OSCILLOSCOPE
( NOTE 1 )
PULSE
GENERATOR
( NOTE 2 )
D.U.T.
( - )
( + )
NOTES : 1. Rise Time = 7ns max. Input Impedance=
1 megohm. 22pF.
2. Rise Time = 10ns max. Source Impedance=
50 ohms.
trr
+0.5A
-0.25A
0
-1.0A
SET TIME BASE
FOR 50/100 ns/cm
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