Document
BUL49D BULB49D
High voltage fast-switching NPN power transistors
Features
■ High voltage capability ■ Low spread of dynamic parameters ■ Minimum lot-to-lot spread for reliable operation ■ Very high switching speed ■ High ruggedness
Applications
■ Electronic transformers for halogen lamps ■ Flyback and forward single transistor low
power converters
Description
The devices are manufactured using high voltage multi-epitaxial planar technology for high switching speeds and high voltage capability. The devices are designed for use in electronic transformer for halogen lamps.
3 2 1
TO-220
3 2 1
TO-220FP
3 1
D2PAK
123
I2PAK
Figure 1. Internal schematic diagram
Table 1. Device summary
Order code
Marking
BUL49D BUL49DFP
BUL49D BUL49DFP
BULB49D-1
BULB49D
BULB49DT4
BULB49D
June 2008
Package TO-220 TO-220FP I2PAK D2PAK
Rev 3
Packaging Tube Tube Tube
Tape and reel
1/15
www.st.com
15
Contents
Contents
BUL49D - BULB49D
1 Electrical ratings . . . . . . . . . . . . .