1N4942 THRU 1N4948
GLASS PASSIVATED JUNCTION FAST SWITCHING RECTIFIER
Reverse Voltage - 200 to 1000 Volts Forward Current - 1. 0 Ampere
FEATURES
High temperature metallurgically bonded construction
Hermetically sealed package
Glass passivated cavity-free junction
1.0 Ampere operation
at TA=55
C with no
thermal runaway
Typical I
R
less than 0.1
A
Capable of meeting environmental standards of
MIL-S-19500
Fast switching for high efficiency
High temperature soldering guaranteed:
350
C/10 seconds, 0.375" (9.5mm) lead length,
5 lbs. (2.3kg) tension
MECHANICAL DATA
Case: JEDEC DO-204AP solid glass body
Terminals: Solder plated axial leads, solderable per
MIL-STD-750, Method 2026
Polarity: Color band denotes cathode end
Weight: 0.02 ounce, 0.56 gram
MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS
Ratings at 25
C ambient temperature unless otherwise specified.
SYMBOLS
1N4942
1N4944
1N4946
1N4947
1N4948
UNITS
* Maximum recurrent peak reverse voltage
V
RRM
200
400
600
800
1000
Volts
Maximum RMS voltage
V
RMS
140
280
420
560
700
Volts
* Maximum DC blocking voltage
V
DC
200
400
600
800
1000
Volts
* Minimum reverse breakdown voltage at 50
A
V
(BR)
220
440
660
880
1100
Volts
* Maximum average forward rectified current
0.375" (9.5mm) lead length at T
A
=55
C
l
(AV)
1.0
Amp
* Peak forward surge current
8.3ms single halt sine-wave superimposed
I
FSM
25.0
Amps
on rated load (JEDEC Method)
* Maximum instantaneous forward voltage at: 1.0A
1.3
at 2.0A, T
A
=-40
C
V
F
2.5
Volts
* Maximum DC reverse current
T
A
=25
C
1.0
at Rated DC blocking voltage
T
A
=175
C
I
R
500.0
A
* Maximum reverse recovery time
(NOTE 1)
t
rr
150
250
500
ns
Typical junction capacitance
(NOTE 2)
C
J
15.0
pF
Typical thermal resistance
(NOTE 3)
R
JA
55.0
C/W
* Operating junction and storage temperature range
T
J
, T
STG
-65 to +175
C
NOTES:
(1) Reverse recovery test conditions: I
F
=0.5A, I
R
=1.0A, Irr=25A
(2) Measured at 1.0 MHz and applied reverse voltage of 4.0 Volts
(3) Thermal resistance from junction to ambient at 0.375" (9.5mm) lead length, P.C.B. mounted
*JEDEC registered values
4/98
DO-204AP
0.034 (0.86)
0.028 (0.71)
DIA.
0.150 (3.8)
0.100 (2.5)
DIA.
1.0 (25.4)
MIN.
0.240 (6.1)
MAX.
1.0 (25.4)
MIN.
Dimensions in inches and (millimeters)
*
Brazed-lead assembly is covered by Patent No. 3,930,306
P
A
TENTED*
25
50
75
100
125
150
0
0.5
0.4
0.6
0.8
1.0
1.2
1.4
1.6
10
1
1
10
100
10
30
1
100
10
30
175
0.25
0.75
1.0
20
0
10
1
0.1
0.01
0
20
40
60
80
100
0.01
0.1
1
10
20
RATINGS AND CHARACTERISTIC CURVES 1N4942 THRU 1N4948
FIG. 1 - FORWARD CURRENT DERATING CURVE
AMBIENT TEMPERATURE, C
AVERAGE FORWARD RECTIFIED
CURRENT, AMPERES
FIG. 2 - MAXIMUM NON-REPETITIVE PEAK
FORWARD SURGE CURRENT
NUMBER OF CYCLES AT 60 Hz
PEAK FORWARD SURGE CURRENT,
AMPERES
FIG. 3 - TYPICAL INSTANTANEOUS FORWARD
CHARACTERISTICS
FIG. 4 - TYPICAL REVERSE CHARACTERISTICS
INSTANTANEOUS FORWARD CURRENT,
AMPERES
INSTANTANEOUS REVERSE CURRENT,
MICROAMPERES
INSTANTANEOUS FORWARD VOLTAGE,
VOLTS
FIG. 5 - TYPICAL JUNCTION CAPACITANCE
JUNCTION
CAPACITANCE, pF
REVERSE VOLTAGE, VOLTS
8.3ms SINGLE HALF SINE-WAVE
(JEDEC Method)
T
J
=T
J
max.
T
J
=25C
T
J
=25C
PULSE WIDTH=300
s
1% DUTY CYCLE
T
J
=25C
f=1.0 MHz
Vsig=50mVp-p
RESISTIVE OR
INDUCTIVE LOAD
0.375" (9.5mm)
LEAD LENGTH
T
J
=25C
PERCENT OF RATED PEAK REVERSE
VOLTAGE, %
T
J
=75C
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