BY550G-400 GLASS PASSIVATED JUNCTION RECTIFIER VOLTAGE: 400V CURRENT: 5.0A FEATURE DO - 201AD Molded case feature for auto insertion High current capability Low leakage current High surge capability High temperature soldering guaranteed 250°C /10sec/0.375" lead length at 5 lbs tension Glass Passivated chip 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 Dimensions in inches and (millimeters) MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS (single-phase, half-wave, 60HZ, resistive or inductive load rating at 25°C, unless otherwise stated, for capacitive load, derate current by 20%) SYMBOL BY550G-20S units Maximum Recurrent Peak Reverse Voltage Maximum RMS Voltage Maximum DC blocking Voltage Vrrm Vrms Vdc 400 280 400 V V V Maximum Average Forward Rectified Current 3/8" lead length at Ta =60°C Peak Forward Surge Current 8.3ms single half sine-wave superimposed on rated load Maximum Instantaneous Forward Voltage at rated forward current Maximum DC Reverse Current Ta =25°C at rated DC blocking voltage Ta =125°C Typical Junction Capacitance (Note 1) Operating Temperature (Note 2) Storage and Operating Junction Temperature If(av) 5.0 A Ifsm 300.0 A Vf 1.15 V Ir Cj Rth(ja) Tstg, Tj 20.0 200.0 50 18 -55 to +150 µA pF °C/W °C Note: 1. Measured at 1.0 MHz and applied voltage of 4.0Vdc 2. Thermal Resistance from Junction to Ambient at 0.375" lead length, P.C. Board Mounted Rev.A1 www.gulfsemi.com RATINGS AND CHARACTERISTIC CURVES BY550G-400 Rev.A1 www.gulfsemi.com