1N4942
THRU
1N4948
1 Amp Fast Recovery
Rectifier
200 to 1000 Volts
DO-41
Features
Low Leakage Current
Metalurgically Bonded Construction
Low Cost
Fast Switching For High Efficiency
DIMENSIONS
INCHES
MM
DIM
MIN
MAX
MIN
MAX
NOTE
A
.166
.205
4.10
5.20
B
.080
.107
2.00
2.70
C
.028
.034
.70
.90
D
1.000
---
25.40
---
Maximum Ratings
Operating Temperature: -55
C to +150
C
Storage Temperature: -55
C to +150
C
Maximum Thermal Resistance; 50
C/W Junction To Ambient
Microsemi
Catalog
Number
Device
Marking
Maximum
Recurrent
Peak
Reverse
Voltage
Maximum
RMS
Voltage
Maximum
DC
Blocking
Voltage
1N4942
---
200V
140V
200V
1N4944
---
400V
280V
400V
1N4946
---
600V
420V
600V
1N4947
---
800V
560V
800V
1N4948
---
1000V
700V
1000V
Electrical Characteristics @ 25
C Unless Otherwise Specified
Average Forward
Current
I
F(AV)
1.0A
T
A
=55
C
Peak Forward Surge
Current
I
FSM
25A
8.3ms, half sine
Maximum
Instantaneous
Forward Voltage
V
F
1.3V
I
FM
= 1.0A;
T
A
= 25
C*
Maximum DC
Reverse Current At
Rated DC Blocking
Voltage
I
R
5.0
A
500
A
T
J
= 25
C
T
J
= 175
C
Maximum Reverse
Recovery Time
1N4942-4944
1N4946-4947
1N4948
T
rr
150ns
250ns
500ns
I
F
=0.5A,
I
R
=1.0A,
I
rr
=0.25A
Typical Junction
Capacitance
C
J
15pF
Measured at
1.0MHz,
V
R
=4.0V
*Pulse test: Pulse width 300
sec, Duty cycle 2%
A
B
C
D
D
Cathode
Mark
www.
mccsemi
.com
omponents
21201 Itasca Street Chatsworth
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M C C
1N4942 thru 1N4948
Average Forward Rectified Current - Amperes
versus
Ambient Temperature -
C
Figure 2
Forward Derating Curve
0
175
50
75
100
125
0
.2
.4
.6
Single Phase, Half Wave
60Hz Resistive or Inductive Load
Amps
C
150
.8
1.0
1.2
Junction Capacitance - pF
versus
Reverse Voltage - Volts
Instantaneous Forward Current - Amperes
versus
Instantaneous Forward Voltage - Volts
Figure 1
Typical Forward Characteristics
4
6
20
10
Amps
.4
.6
.8
1.0
1.2
1.4
.01
.02
.04
.06
.1
.2
.4
.6
1
2
25
C
Volts
Figure 3
Junction Capacitance
.1
.2
1
.4
2
10
20
40
4
100 200
1
2
6
10
20
100
pF
Volts
60
40
4
400
1000
T
J
=25
C
www.
mccsemi
.com
1N4942 thru 1N4948
t
rr
+0.5A
0
-0.25
-1.0
1cm
Set Time Base for 20/100ns/cm
25Vdc
1
50
10
Oscilloscope
Note 1
Pulse
Generator
Note 2
Notes:
1. Rise Time = 7ns max.
Input impedance = 1 megohm, 22pF
2. Rise Time = 10ns max.
Source impedance = 50 ohms
3. Resistors are non-inductive
Figure 6
Reverse Recovery Time Characteristic And Test Circuit Diagram
Figure 4
Typical Reverse Characteristics
Instantaneous Reverse Leakage Current - MicroAmperes
versus
Percent Of Rated Peak Reverse Voltage - Volts
Volts
4
6
20
10
Amps
20
120
40
60
80
100
.01
.02
.04
.06
.1
.2
.4
.6
1
2
T
A
=25
C
40
60
100
140
T
A
=75
C
1
100
4
0
5
10
15
8
Figure 5
Non-Repetitive Peak Forward Surge Current
Peak Forward Surge Current - Amperes
versus
Number Of Cycles At 60Hz - Cycles
Amps
Cycles
2
6
10 20
60 80
40
20
25
30
T
A
=125
C
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.com
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