DESCRIPTION
The BUF420 and BUF420M are manufactured 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 RBSOA.
The BUF series is designed for use in high-frequency power supplies and motor control applications.

■ SGS-THOMSON PREFERRED SALESTYPES
■ NPN TRANSISTOR
■ HIGH VOLTAGE CAPABILITY
■ VERY HIGH SWITCHING SPEED
■ MINIMUM LOT-TO-LOT SPREAD FOR RELIABLE OPERATION
■ LOW BASE-DRIVE REQUIREMENTS

APPLICATIONS:
■ SWITCH MODE POWER SUPPLIES
■ MOTOR CONTROL