1N4942 THRU 1N4948
FAST RECOVERY RECTIFIER
REVERSE VOLTAGE:
200 to 1000 VOLTS
FORWARD CURRENT:
1.0 AMPERE
FEATURES
· High surge current capability
· 1.0 ampere operation at TA=55℃ with no
thermal runaway.
· Void-free Plastic in a DO-41 package.
· Fast switching for high efficiency
· Exceeds environmental standards of MIL-S-19500/228
· Low leakage.
MECHANICAL DATA
Case: Molded plastic, DO-41
Epoxy: UL 94V-O rate flame retardant
Lead: Axial leads, solderable per MIL-STD-202,
method 208 guaranteed
Polarity: Color band denotes cathode end
Mounting position: Any
Weight: 0.012ounce, 0.33gram
DO-41
(25.4) 1.0
MIN
.034 (.86)
.028 (.71)
(7.6) .300
(5.8) .230
(25.4) 1.0
MIN
.107 (2.7)
.080 (2.0)
Dimensions in inches and (millimeters)
Maximum Ratings and Electrical Characteristics
Ratings at 25℃ ambient temperature unless otherwise specified.
Single phase, half wave, 60HZ, resistive or inductive load.
For capacitive load, derate current by 20%.
Maximum Recurrent Peak Reverse Voltage
Maximum RMS Voltage
Maximum DC Blocking Voltage
Maximum Average Forward Rectified Current
.375"(9.5mm) Lead Length at TA=55℃
Peak Forward Surge Current,
8.3ms single half-sine-wave
superimposed on rated load (JEDEC method)
Maximum Forward Voltage
at 1.0A DC and 25℃
Maximum Reverse Current
at Rated DC Blocking Voltage
at TA=25℃
TA=100℃
Typical Junction Capacitance (Note 1)
Typical Thermal Resistance (Note 2)
Maximum Reverse Recovery Time (Note 3)
Operating and Storage Temperature Range
Symbols
VRRM
VRMS
VDC
I(AV)
1N4942
200
140
200
1N4944
400
280
400
IFSM
VF
IR
CJ
RθJA
TRR
TJ，Tstg
150
NOTES:
1- Measured at 1 MHZ and applied reverse voltage of 4.0 VDC.
2- Thermal Resistance From Junction to Ambient 0.375"(9.5mm) lead length P.C.B. Mounted.
3- Reverse Recovery Test Conditions：IF=.5A，IR=1A，IRR=.25A.
1N4946
600
420
600
1.0
1N4947
800
560
800
1N4948
1000
700
1000
30
1.3
5.0
50
12
50
250
-55 to +150
500
Units
Volts
Volts
Volts
Amp
Amp
Volts
uAmp
pF
℃/W
nS
℃
