ST buf420-- free download

File name buf420--.pdf

BUF420 BUF420M HIGH VOLTAGE FAST-SWITCHING NPN POWER TRANSISTOR s SGS-THOMSON PREFERRED SALESTYPES s NPN TRANSISTOR s HIGH VOLTAGE CAPABILITY s VERY HIGH SWITCHING SPEED s MINIMUM LOT-TO-LOT SPREAD FOR RELIABLE OPERATION s LOW BASE-DRIVE REQUIREMENTS APPLICATIONS: 3 1 s SWITCH MODE POWER SUPPLIES 1 2 2 s MOTOR CONTROL DESCRIPTION TO-218 TO-3 The BUF420 and BUF420M are manufactured (version "R") using High Voltage Multi Epitaxial Planar technology for high switching speeds and high voltage capacity. They use a Cellular Emitter structure with planar edge termination to enhance switching speeds while maintaining a wide INTERNAL SCHEMATIC DIAGRAM RBSOA. The BUF series is designed for use in high-frequency power supplies and motor control applications. For TO-3 : C = Tab E = Pin2. ABSOLUTE MAXIMUM RATINGS Symb ol Parameter Valu e Un it V CEV Collector-Emitter Voltage (VBE = -1.5 V) 850 V V CEO Collector-Emitter Voltage (IB = 0) 450 V VEBO Emitter-Base Voltage (IC = 0) 7 V IC Collector Current 30 A I CM Collector Peak Current (tp < 5 ms) 60 A IB Base Current 6 A I BM Base Peak Current (tp < 5 ms) 9 A T O-218 TO -3 o P tot T otal Dissipation at Tc = 25 C 200 200 W o T s tg Storage Temperature -65 to 150 C o T