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BUL381 BUL382
HIGH
VOLTAGE FAST-SWITCHING NPN POWER TRANSISTOR
s s s
s s
STM PREFERRED SALESTYPES HIGH
VOLTAGE CAPABILITY MINIMUM LOT-TO-LOT SPREAD FOR RELIABLE OPERATION VERY HIGH SWITCHING SPEED FULLY CHARACTERISED AT 125oC
APPLICATIONS ELECTRONIC BALLASTS FOR FLUORESCENT LIGHTING s SWITCH MODE POWER SUPPLIES
s
1
2
3
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.
TO-220
INTERNAL SCHEMATIC DIAGRAM
ABSOLUTE MAXIMUM RATINGS
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