BA157 thru BA159 CHENG- YI FAST SWITCHING PLASTIC RECTIFIER ELECTRONIC VOLTAGE-400 TO 1000 Volts CURRENT -1.0 Ampere FEATURES DO-41 High surge current capability. Plastic package has underwriters laboratory Flammability classification 94V-O utilizing Flame retardant epoxy molding compound Void-free plastic in a DO-41 package. 1.0 ampere operation at TA=55OC with no thermal runway. Fast switching for high efficiency Exceeds environmental standard of MILSTD-19500/228. MECHANICAL DATA Case:Molded plastic,DO-41 Terminals:Plated axial leads, solderable per MIL-STD-202, Method 208 Polarity:Band denotes cathpde Mounting position:Any Weight:0.012 ounce, 0.3 gram MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS Rating at 250C ambient temperature unless otherwise specified. Single phase, half wave, 60Hz, reistive or inductive load. For capacitive load, derate current by 20%. BA157 BA158 BA159 UNITS 400 600 1000 V Maximum RMS Voltage 280 420 700 V Maximum DC Blocking Voltage 400 600 1000 V Maximum Recurrent Peak Reverse Voltage Maximum Average Forward Rectified Current .375" , (9.5mm) Lead Length at TA=55 C 1.0 A Peak Forward Surge Current, 8.3 ms single half sine-wave superimposed on rated load (JEDEC method) 30 A Maximum Forward Voltage at 1.0A 1.3 V Maximum Reverse Current TJ =25 C at rated DC Blocking Voltage T J =100 C 5.0 500 Typical Junction Capacitance (Note 1) 12 pF Maximum Reverse Recovery Time (Note 2) 150 nS Storage and Opeating Temperature Range -55 to +150 0 0 0 Notes : 1. Measured at 1 MHz and applied reverse voltage of 4.0 VDC. 2. Revese Recovery Test Conditions : IF=.5A, I R=1A, Irr=.25A. A 0 C BA157 thru BA159 CHENG- YI FAST SWITCHING PLASTIC RECTIFIER ELECTRONIC RATING AND CHARACTERISTICS CURVES BA157 THRU BA159 Fig. 1 - REVERSE RECOVERY TIME CHARACTERISTIC AND TEST CIRCUIT DIAGRAM 50 NONINDUCTIVE trr 10 NONINDUCTIVE +0.5A ( 0 PULSE GENERATOR (NOTE 2) 25 Vdc (approx.) ( ) D.U.T. (+) ) 1 NONINDUCTIVE -0.25 OSCILLOSCOPE (NOTE 1) (+) -1.0A NOTES : 1. Rise Time=7ns max., Input Impedance= 1 megohm, 22pF. 2. Rise Time=10ns max., Source Impedance= 50 ohms. T J = 25 0 C 1.0 Fig. 3 - FORWARD CURRENT DERATING CURVE AVERAGE FORWARD RECTIFIED CURRENT AMPERES INSTANTANEOUS FORWARD CURRENT AMPERES Fig. 2 - FORWARD CURRENT DERATING CURVE 10 Pulse Width=200 S SET TIME BASE FOR 50 / 100ns/cm 1cm 1.6 1.4 1.2 1.0 MAXIMUNM AVERAGE CURRENT RATING SINGLE PHASE, HALF-WAVE, 60Hz RESISTIVE OR INDUCTIVE LOAD .375"(9mm) LEAD LENGTH .8 .6 .4 .2 0 0 20 40 60 80 100 120 140 160 0 AMBIENT TEMPERATURE, C 0.1 0.01 0.6 0.8 1.1 1.3 1.4 INSTANTANEOUS FORWARD VOLTAGE, VOLTS Fig. 5 - PEAK FORWARD SURGE CURRENT CAPACITANCE-pF 100 0 TJ=25C 10 1 1 10 REVERSE VOLTAGE. VOLTS 100 FORWARD SURGE CURRENT, AMPERES pk (HALF-SINE WAVE) Fig. 4 - TYPICAL JUNCTION CAPACITANCE 30 24 18 12 6 1 2 4 6 8 10 20 40 60 80 100 NUMBER OF CYCLES AT 60Hz 180