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High voltage fast-switching NPN power transistors
High voltage capability
High current capability
Fast switching speed
Switching mode power supplies
Flyback and forward single transistor low power
Figure 1. Internal schematic diagram
The BUX48 and BUX48A are multi epitaxial mesa
NPN transistors mounted in TO-3 metal can.
They are intended for switching and industrial
applications for single and three-phase mains.
Table 1. Device summary
Order code Marking Package Packaging
BUX48 BUX48 TO-3
BUX48A BUX48A TO-3
November 2007 Rev 1 1/9
Absolute maximum ratings BUX48 BUX48A
1 Absolute maximum ratings
Table 2. Absolute maximum ratings
BUX48 BUX48A Unit
VCER Collector-emitter voltage (RBE = 10) 850 1000 V
VCES Collector-emitter voltage (VBE = 0) 850 1000 V
VCEO Collector-emitter voltage (IB = 0) 400 450 V
VEBO Emitter-base voltage (IC = 0) 7 V
IC Collector current 15 A
ICM Collector peak current 30 A
ICP Collector peak current non repetitive (tp < 20
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