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.
4 A • Full Characterization at 125°C • Tight Parametric Distributions Consistent Lot–to–Lot • BUL45F, Case 221...