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BUX48
BUX48A
High voltage fast-switching NPN power transistors
Features
NPN transistors
High voltage capability
High current capability
Fast switching speed
Applications 1
2
Switching mode power supplies
TO-3
Flyback and forward single transistor low power
converters
Figure 1. Internal schematic diagram
Description
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
tray
BUX48A BUX48A TO-3
November 2007 Rev 1 1/9
www.st.com 9
Absolute maximum ratings BUX48 BUX48A
1 Absolute maximum ratings
Table 2. Absolute maximum ratings
Value Unit
Symbol Parameter
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 ◦ Jabse Service Manual Search 2024 ◦ Jabse Pravopis ◦ onTap.bg ◦ Other service manual resources online : Fixya ◦ eServiceinfo