®
BUL57 BUL57FP
HIGH
VOLTAGE FAST-SWITCHING NPN POWER TRANSISTORS
s
s s s s
s s s s
STMicroelectronics PREFERRED SALESTYPES NPN TRANSISTORS HIGH
VOLTAGE CAPABILITY LOW SPREAD OF DYNAMIC PARAMETERS MINIMUM LOT-TO-LOT SPREAD FOR RELIABLE OPERATION VERY HIGH SWITCHING SPEED FULLY CHARACTERIZED AT 125oC LARGE RBSOA TO-220FP FULLY ISOLATED PACKAGE (U.
L.
COMPLIANT)
1
2
3
1 2
3
TO-220
TO-220FP
APPLICATIONS: s ELECTRONIC BALLASTS FOR FLUORESCENT LIGHTING s SWITCH MODE POWER SUPPLIES DESCRIPTION The devices are manufactured using high
voltage Multi Epitaxial Planar technology for high switching speeds and medium
voltage capability.
They use a Cellular Emitter structure with planar edge te...