1N4944

1N4942 THRU 1N4948 GLASS PASSIVATED JUNCTION FAST SWITCHING RECTIFIER Reverse Voltage - 200 to 1000 Volts ED * DO-204AP Forward Current - 1. 0 Ampere FEATURES T PA EN T 0.034 (0.86) 0.028 (0.71) DIA. 1.0 (25.4) MIN. 0.240 (6.1) MAX. 0.150 (3.8) 0.100 (2.5) DIA. 1.0 (25.4) MIN. ♦ 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 IR less than 0.1µA ♦ 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 Dimensions in inches and (millimeters) *Brazed-lead assembly is covered by Patent No. 3,930,306 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 Maximum RMS voltage * Maximum DC blocking voltage * Minimum reverse breakdown voltage at 50µA * Maximum average forward rectified current 0.375” (9.5mm) lead length at TA=55°C * Peak forward surge current 8.3ms single halt sine-wave superimposed on rated load (JEDEC Method) * Maximum instantaneous forward voltage at: 1.0A at 2.0A, TA=-40°C * Maximum DC reverse current at Rated DC blocking voltage Typical junction capacitance (NOTE 2) Typical thermal resistance (NOTE 3) * Operating junction and storage temperature range TA=25°C TA=175°C VRRM VRMS VDC V(BR) l(AV) 200 140 200 220 400 280 400 440 600 420 600 660 1.0 800 560 800 880 1000 700 1000 1100 Volts Volts Volts Volts Amp IFSM 25.0 1.3 2.5 1.0 500.0 150 15.0 55.0 -65 to +175 250 500 Amps VF IR trr CJ RΘJA TJ, TSTG Volts µA ns pF °C/W °C * Maximum reverse recovery time (NOTE 1) 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. 1 - FORWARD CURRENT DERATING CURVE FIG. 2 - MAXIMUM NON-REPETITIVE PEAK FORWARD SURGE CURRENT 1.0 PEAK FORWARD SURGE CURRENT, AMPERES AVERAGE FORWARD RECTIFIED CURRENT, AMPERES RESISTIVE OR INDUCTIVE LOAD 0.375" (9.5mm) LEAD LENGTH 30 TJ=TJ max. 8.3ms SINGLE HALF SINE-WAVE (JEDEC Method) 0.75 20 0.5 10 0.25 0 25 50 75 100 125 150 175 0 1 10 NUMBER OF CYCLES AT 60 Hz 100 AMBIENT TEMPERATURE, °C FIG. 3 - TYPICAL INSTANTANEOUS FORWARD CHARACTERISTICS FIG. 4 - TYPICAL REVERSE CHARACTERISTICS 10 20 10 INSTANTANEOUS FORWARD CURRENT, AMPERES 1 TJ=25°C PULSE WIDTH=300µs 1% DUTY CYCLE INSTANTANEOUS REVERSE CURRENT, MICROAMPERES TJ=25°C 1 TJ=75°C 0.1 0.1 0.01 0.4 0.6 0.8 1.0 1.2 1.4 1.6 0.01 0 20 TJ=25°C INSTANTANEOUS FORWARD VOLTAGE, VOLTS 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 REVERSE VOLTAGE, VOLTS 100