February 2012 Doc ID 7929 Rev 5 1/13
13
BUL1102E
High voltage fast-switching
NPN power transistor
Features
■ High voltage capability
■ Very high switching speed
Applications
Four lamp electronic ballast for:
■ 120 V mains in push-pull configuration
■ 277 V mains in half bridge current feed
configuration
Description
This is a high voltage fast switching NPN power
transistor manufactured in multi epitaxial planar
technology. It uses a cellular emitter structure with
planar edge termination to enhance switching
speeds while maintaining a wide RBSOA.
Thanks to an increased intermediate layer, it has
an intrinsic ruggedness which enables the
transistor to withstand a high collector current
level during breakdown condition, without using
the Transil™ protection usually necessary in
typical converters for lamp ballast.
Figure 1. Internal schematic diagram
TO-220FP
1
2
3
1
2
3
TA B
TO-220
C
(2, TAB)
(1)
B
E
(3)
Table 1. Device summary
Order codes Marking Package Packaging
BUL1102E BUL1102E TO-220 Tube
BUL1102EFP BUL1102EFP TO-220FP Tube
www.st.com