BUL743 Datasheet, PDF (1/10 Pages) STMicroelectronics – High voltage fast-switching NPN power transistor

BUL743
High voltage fast-switching
NPN power transistor
Features
■ Low spread of dynamic parameters
■ High voltage capability
■ Minimum lot-to-lot spread for reliable operation
■ Very high switching speed
Applications
■ Electronic ballast for fluorescent lighting up to
256 W (8 x 32 W)
■ Switch mode power supplies
Description
The device is manufactured using the diffused
collector in planar technology adopting new and
enhanced high voltage structure. It has an
intrinsic ruggedness which enables the transistor
to withstand an high collector current level during
breakdown condition, without using the transil
protection usually necessary in typical converters
for lamp ballast.
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TO-220
Figure 1. Internal schematic diagram
Table 1. Device summary
Order code
Marking
BUL743
BUL743
May 2009
Package
TO-220
Doc ID 15263 Rev 3
Packaging
Tube
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www.st.com
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