DESCRIPTION
The BUL381 and BUL382 manufactured using high voltage Multiepitaxial Mesa technology for
cost-effective high performance. They use a Hollow Emitter structure to enhance switching
speeds. The BUL series is designed for use in lighting applications and low cost switch-mode power supplies.

■ STM PREFERRED SALESTYPES
■ HIGH VOLTAGE CAPABILITY
■ MINIMUM LOT-TO-LOT SPREAD FOR RELIABLE OPERATION
■ VERY HIGH SWITCHING SPEED
■ FULLY CHARACTERISED AT 125^oC

APPLICATIONS
■ ELECTRONIC BALLASTS FOR FLUORESCENT LIGHTING
■ SWITCH MODE POWER SUPPLIES