SWITCHMODE™
NPN Bipolar Power Transistor For Switching Power Supply Applications

The BUL146G / BUL146FG have an applications specific state−of−the−art die designed for use in fluorescent electric lamp ballasts to 130 W and in Switchmode Power supplies for all types of electronic equipment.

FEATUREs
• Improved Efficiency Due to Low Base Drive Requirements:
   ♦ High and Flat DC Current Gain
   ♦ Fast Switching
   ♦ No Coil Required in Base Circuit for Turn−Off (No Current Tail)
• Full Characterization at 125°C
• Two Packages Choices: Standard TO−220 or Isolated TO−220
• Parametric Distributions are Tight and Consistent Lot−to−Lot
• BUL146F, Case 221D, is UL Recognized to 3500 VRMS: File # E69369
• These Devices are Pb−Free and are RoHS Compliant*