BUF420M| Datasheet

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BUF420M
HIGH VOLTAGE FAST-SWITCHING NPN POWER TRANSISTOR

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STMicroelectronics PREFERRED SALESTYPE HIGH VOLTAGE CAPABILITY VERY HIGH SWITCHING SPEED MINIMUM LOT-TO-LOT SPREAD FOR RELIABLE OPERATION LOW BASE-DRIVE REQUIREMENTS

APPLICATIONS: s SWITCH MODE POWER SUPPLIES s MOTOR CONTROL DESCRIPTION The BUF420M is manufactured using High Voltage Multi Epitaxial Planar technology for high switching speeds and high voltage capacity. It uses a Cellular Emitter structure with planar edge termination to enhance switching speeds while maintaining a wide RBSOA. The BUF series is designed for use in high-frequency power supplies and motor control applications.

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TO-3 (version "R")

INTERNAL SCHEMATIC DIAGRAM

ABSOLUTE MAXIMUM RATINGS
Symbol V CEV V CEO V EBO IC I CM IB I BM P tot T stg Tj Parameter Collector-Emitter Voltage (V BE = -1.5V) Collector-Emitter Voltage (I B = 0) Emitter-Base Voltage (I C = 0) Collector Current Collector Peak Current (t p < 5 ms) Base Current Base Peak Current (t p < 5 ms) Total Dissipation at T c = 25 o C Storage Temperature Max. Operating Junction Temperature Value 850 450 7 30 60 6 9 275 -65 to 200 200 Unit V V V A A A A W
o o

C C

March 2002

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