1N4942 THRU 1N4948

GLASS PASSIVATED JUNCTION FAST SWITCHING RECTIFIER

Reverse Voltage - 200 to 1000 Volts Forward Current - 1. 0 Ampere

FEATURES
* DO-204AP
♦ High temperature metallurgically bonded construction
T ED ♦ Hermetically sealed package
T EN 0.034 (0.86) ♦ Glass passivated cavity-free junction
♦ 1.0 Ampere operation
PA
0.028 (0.71)
DIA. 1.0 (25.4)
MIN.
at TA=55°C with no
thermal runaway
♦ Typical IR less than 0.1µA
♦ Capable of meeting environmental standards of
0.240 (6.1)
MAX. MIL-S-19500
♦ Fast switching for high efficiency
♦ High temperature soldering guaranteed:
0.150 (3.8)
0.100 (2.5)
350°C/10 seconds, 0.375” (9.5mm) lead length,
DIA.
1.0 (25.4) 5 lbs. (2.3kg) tension
MIN.

MECHANICAL DATA
Dimensions in inches and (millimeters)
Case: JEDEC DO-204AP solid glass body
Terminals: Solder plated axial leads, solderable per
*Brazed-lead assembly is covered by Patent No. 3,930,306 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 VRRM 200 400 600 800 1000 Volts
Maximum RMS voltage VRMS 140 280 420 560 700 Volts
* Maximum DC blocking voltage VDC 200 400 600 800 1000 Volts
* Minimum reverse breakdown voltage at 50µA V(BR) 220 440 660 880 1100 Volts
* Maximum average forward rectified current
l(AV) 1.0 Amp
0.375” (9.5mm) lead length at TA=55°C
* Peak forward surge current
8.3ms single halt sine-wave superimposed IFSM 25.0 Amps
on rated load (JEDEC Method)
* Maximum instantaneous forward voltage at: 1.0A 1.3
VF Volts
at 2.0A, TA=-40°C 2.5
* Maximum DC reverse current TA=25°C 1.0
IR µA
at Rated DC blocking voltage TA=175°C 500.0
* Maximum reverse recovery time (NOTE 1) trr 150 250 500 ns
Typical junction capacitance (NOTE 2) CJ 15.0 pF
Typical thermal resistance (NOTE 3) RΘJA 55.0 °C/W
* Operating junction and storage temperature range TJ, TSTG -65 to +175 °C

NOTES:
(1) Reverse recovery test conditions: IF=0.5A, IR=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
 RATINGS AND CHARACTERISTIC CURVES 1N4942 THRU 1N4948

FIG. 2 - MAXIMUM NON-REPETITIVE PEAK

FIG. 1 - FORWARD CURRENT DERATING CURVE FORWARD SURGE CURRENT
1.0 30
RESISTIVE OR TJ=TJ max.
8.3ms SINGLE HALF SINE-WAVE

PEAK FORWARD SURGE CURRENT,

INDUCTIVE LOAD
AVERAGE FORWARD RECTIFIED

0.375" (9.5mm) (JEDEC Method)

LEAD LENGTH
0.75
CURRENT, AMPERES

20

AMPERES
0.5

10
0.25

0
25 50 75 100 125 150 175 0
1 10 100
AMBIENT TEMPERATURE, °C
NUMBER OF CYCLES AT 60 Hz

FIG. 3 - TYPICAL INSTANTANEOUS FORWARD

CHARACTERISTICS FIG. 4 - TYPICAL REVERSE CHARACTERISTICS

10 20

10
INSTANTANEOUS FORWARD CURRENT,

TJ=25°C
INSTANTANEOUS REVERSE CURRENT,

1
AMPERES

MICROAMPERES

TJ=25°C 1
PULSE WIDTH=300µs
1% DUTY CYCLE

TJ=75°C
0.1

0.1

0.01
0.4 0.6 0.8 1.0 1.2 1.4 1.6 TJ=25°C

INSTANTANEOUS FORWARD VOLTAGE, 0.01

VOLTS 0 20 40 60 80 100
PERCENT OF RATED PEAK REVERSE
VOLTAGE, %
FIG. 5 - TYPICAL JUNCTION CAPACITANCE
30
TJ =25°C
f=1.0 MHz
Vsig=50mVp-p
JUNCTION CAPACITANCE, pF

10

1
1 10 100
REVERSE VOLTAGE, VOLTS