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