BU508AF
High voltage NPN power transistor for standard
definition CRT display
Features
■
■
■
■
■
■
State-of-the-art technology:
– Diffused collector “Enhanced generation”
Stable performances versus operating
temperature variation
Low base-drive requirement
Tight h
FE
range at operating collector current
High ruggedness
Fully insulated power package U.L. compliant
1
2
3
ISOWATT218FX
Applications
■
■
Horizontal deflection output for CRT TV
Switch mode power supplies for CRT TV
Figure 1.
Internal schematic diagram
Description
The BU508AF is manufactured using diffused
collector in planar technology adopting new and
enhanced high voltage structure for updated
performance to the horizontal deflection stage.
Table 1.
Device summary
Marking
BU508AF
Package
ISOWATT218FX
Packaging
Tube
Order code
BU508AF
August 2007
Rev 2
1/11
11
STMICROELECTRONICS [ STMICROELECTRONICS ]
