1 AMP FAST RECOVERY SILICON RECTIFIERS BA157 THRU BA159 TECHNICAL SPECIFICATION FEATURES VOLTAGE 400 to 1000 Volts Fast recovery times for high efficiency Low cost construction utilizing void - free moulded plastic technique Plastic package has Underwriters Laboratories Flammability Classification 94V-0 High surge current capability Low leakage High temperature soldering capability 250C/10 seconds/9.5mm (.375in.) lead length at 2.3kg (5lb) tension Easily cleaned with Freon, Alcohol, Chlorothene and other similar solvents CURRENT 1.0 Amp DIMENSIONS - millimeters (inches) DO-41 25.4 (1.0) min. 2.7 (.107) 2.0 (.080) MECHANICAL DATA 5.2 (.205) 4.1 (.160) Case Terminals Polarity Mounting Position Weight : JEDEC DO-41, moulded plastic. : Plated axial leads, solderable per MIL-STD-202, Method 208. : Colour band denotes cathode end. : Any : 0.3 grams (0.012 ounce) Cathode Band 25.4 (1.0) min. .86 (.034) .71 (.028) MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS Ratings at 25C ambient temperature unless otherwise specified. Single phase, half wave, 60 Hz, resistive or inductive load. For capacitive load, derate current by 20%. Symbols BA157 BA158 BA159 Maximum Recurrent Peak Reverse Voltage VRRM 400 600 1000 V Maximum RMS Voltage VRMS 280 420 700 V Maximum DC Blocking Voltage VDC 400 600 1000 V Maximum Average Forward Rectified Current 9.5mm (.375in.) Lead Length at TA = 75C Peak Forward Surge Current, 8.3 ms single half sine - wave superimposed on rated load Maximum Instantaneous Forward Voltage at 1.0A Maximum Reverse Current at Rated DC Blocking Voltage TA = 25C TA = 100C Units IF(AV) 1.0 A IFSM 30 A VF 1.2 V IR 5.0 100 A A 150 250 500 Maximum Reverse Recovery Time (see Note 3) trr Typical Junction Capacitance (see Note 1) CJ 15 pF Typical Thermal Resistance (see Note 2) RTHja 50 C/W Operating Temperature Range TJ - 50 to + 175 C Storage Temperature Range TSTG - 50 to + 175 C Notes : 1. 2. 3. nS Measured at 1.0 MHz and applied reverse voltage of 4.0 Volts Thermal Resistance from Junction to Ambient Test Conditions : IF = 0.5A, IR = 1.0A recovery to 0.25A Reformatted by Anglia 9851 BA157 THRU BA159 RATING AND CHARACTERISTIC CURVES FIG. 1 - FORWARD CURRENT DERATING CURVE FIG. 2 - MAXIMUM NON-REPETITIVE PEAK FORWARD SURGE CURRENT 30 0.8 PEAK FORWARD SURGE CURRENT, AMPERES AVERAGE FORWARD RECTIFIED CURRENT, AMPERES 1.0 L 0.6 0.4 5mm x 5mm Cu Leafs 9.5mm Lead Length 0.2 0 25 20 15 TA = 75C 8.3ms single half sine-wave (JEDEC) method 10 5 0 25 50 75 100 125 150 175 200 1 2 10 5 20 50 100 NUMBER OF CYCLES AT 60Hz AMBIENT TEMPERATURE, C FIG. 4 - TYPICAL JUNCTION CAPACITANCE FIG. 3 - TYPICAL INSTANTANEOUS FORWARD CHARACTERISTICS CAPACITANCE, pF 100 INSTANTANEOUS FORWARD CURRENT, AMPERES 30 10 3.0 1.0 15 10 5 TJ = 25C f = 1MHz VSIG = 50mVp-p 2 1 .1 0.3 .2 TJ = 25C Pulse width = 300s 2% duty cycle .5 1 2 5 10 20 50 100 REVERSE VOLTAGE, VOLTS 0.1 .03 .01 0.4 0.6 0.8 1.0 1.2 1.4 1.6 INSTANTANEOUS FORWARD VOLTAGE, VOLTS FIG. 5 - TEST CIRCUIT DIAGRAM AND REVERSE RECOVERY TIME CHARACTERISTICS trr 50y NONINDUCTIVE 10y NONINDUCTIVE +0.5A (-) DUT 0 PULSE GENERATO R (Note 2) 25Vdc (approx) 1y NON INDUCTIVE OSCILLOSCOPE (Note 1) -0.25A (+) -1.0A 1cm NOTES 1 2 SET TIME BASE FOR 50/100ns/cm Rise Time = 7ns max, Input Impedance = 1 megaohm 22pF Rise Time = 10ns max, Source Impedance = 50 ohms Reformatted by Anglia 9851