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ST4460FX
High voltage fast-switching
NPN Power transistor
General features
High voltage and high current capability
Low spread of dynamic parameters
Low base-drive requirements
Very high switching speed
High ruggedness 3
2
Fully insulated power package U.L. compliant 1
ISOWATT218FX
Applications
Switch mode power supplies for CRT TV
Description
Internal schematic diagram
The device is manufactured using high voltage
Multi Epitaxial Mesa technology adopting Hollow
Emitter structure to enhance switching
performances.
Order codes
Part Number Marking Package Packing
ST4460FX 4460FX ISOWATT218FX Tube
December 2006 Rev 1 1/11
www.st.com 11
Contents ST4460FX
Contents
1 Electrical ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.1 Electrical characteristics (curve) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.2 Test circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
4 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2/11
ST4460FX Electrical ratings
1 Electrical ratings
Table 1. Absolute maximum rating
Symbol Parameter Value Unit
VCES Collector-emitter voltage (VBE = 0) 1000 V
VCEO Collector-emitter voltage (IB = 0) 500 V
VEBO Collector-base voltage (IC = 0) 9 V
IC Collector current 15 A
ICM Collector peak current (tP < 5ms) 30 A
IB Base current 7 A
PTOT Total dissipation at Tc = 25