BA157 THRU BA159 1.0AMP . FAST RECOVERY RECTIFIERS DO-41 FEATURE .Fast switching .High current capability .Low forward voltage drop .Low power loss, high efficiency .High surge capability .High temperature soldering guaranteed 260°C /10sec/ 0.375" lead length at 5 lbs tension .787(20.0) M IN. .107(2.7) DIA. .080(2.0) + .205(5.2) .166(4.2) MECHANICAL DATA .Terminal: Plated axial leads solderable per MIL-STD 202E, method 208C .Case: Molded with UL-94 Class V-0 recognized Flame Retardant Epoxy .Polarity: color band denotes cathode .Mounting position: any - .787(20.0) M IN. .032(0.8) DIA. .025(0.65) Dimensions in inches and (millimeters) MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS Ratings at 25℃ ambient temperature unless otherwise specified. Single phase, half wave, 60Hz,resistive or inductive load. For capacitive load, derate current by 20% Type Number SYMBOL BA157 BA158 BA159 units 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 .375"(9.5mm) lead length at TA =55°C IF(AV) 1.0 A IFSM 30.0 A VF 1.3 V Peak Forward Surge Current 8.3ms single half sine-wave superimposed on rated load (JEDEC method) Maximum Instantaneous forward Voltage at 1.0A DC Maximum DC Reverse Current at rated DC blocking voltage @TA =25°C @TA =100°C 5.0 IR µA 100.0 Maximum Reverse Recovery Time (Note 1) trr Typical Junction Capacitance (Note 2) CJ 15 pF Typical Thermal Resistance (Note 3) R(JA) 75 °C/W Storage Temperature TSTG -55 to +150 °C TJ -55 to +150 °C Operation Junction Temperature 150 250 Note: 1. Test Conditions: IF=0.5A, IR=1.0A, IRR=0.25A 2. Measured at 1.0 MHz and applied reverse voltage of 4.0Vdc 3. Thermal Resistance from Junction to Ambient at 0.375"（9.5mm）lead length, vertical P.C. Board Mounted. - 123 - ns