July 2008 Rev 3 1/8
8
2ST5949
High power NPN epitaxial planar bipolar transistor
Features
■ High breakdown voltage V
CEO
= 250 V
■ Complementary to 2ST2121
■ Fast-switching speed
■ Typical f
t
= 25 MHz
■ Fully characterized at 125
o
C
Applications
■ Audio power amplifier
Description
The device is a NPN transistor manufactured
using new BiT-LA (Bipolar transistor for linear
amplifier) technology. The resulting transistor
shows good gain linearity behaviour.
Table 1. Device summary
Figure 1. Internal schematic diagram
TO-3
1
2
Order code Marking Package Packaging
2ST5949 2ST5949 TO-3 tray
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