Document
® BUF420M
HIGH VOLTAGE FAST-SWITCHING NPN POWER TRANSISTOR
s STMicroelectronics PREFERRED
SALESTYPE
s HIGH VOLTAGE CAPABILITY
s VERY HIGH SWITCHING SPEED s MINIMUM LOT-TO-LOT SPREAD FOR
)RELIABLE OPERATION t(ss LOW BASE-DRIVE REQUIREMENTS ucAPPLICATIONS: ds SWITCH MODE POWER SUPPLIES ros MOTOR CONTROL te PDESCRIPTION
The BUF420M is manufactured using High
leVoltage Multi Epitaxial Planar technology for high soswitching speeds and high voltage capacity. It buses a Cellular Emitter structure with planar edge Otermination to enhance switching speeds while -maintaining a wide RBSOA. )The BUF series is designed for use in t(shigh-frequency power supplies and motor control capplications.
1 2
TO-3 (version "R")
INTERNAL SCHEMATIC DIAGRAM
Obsolete ProduABSOLUTE MAXIMUM RATINGS
Symbol
Parameter
Value
Unit
VCEV Collector-Emitter Voltage (VBE = -1.5V)
850 V
VCEO Collector-Emitter Voltage (IB = 0)
450 V
VEBO Emitter-Base Voltage (IC = 0)
7V
IC Collector Current
30 A
ICM Collect.