The following content is an automatically extracted verbatim text
from the original manufacturer datasheet and is provided for reference purposes only.
View original datasheet text
MOTOROLA
SEMICONDUCTOR TECHNICAL DATA
Order this document by BUL45/D
Designer's
NPN Silicon Power Transistor
High Voltage SWITCHMODE
™ Data Sheet
BUL45 * BUL45F*
*Motorola Preferred Device
t Series
Designed for use in electronic ballast (light ballast) and in Switchmode Power supplies up to 50 Watts. Main features include: • Improved Efficiency Due to: — Low Base Drive Requirements (High and Flat DC Current Gain hFE) — Low Power Losses (On–State and Switching Operations) — Fast Switching: tfi = 100 ns (typ) and tsi = 3.2 µs (typ) — Fast Switching: @ IC = 2.0 A, IB1 = IB2 = 0.