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Low voltage fast-switching PNP power transistor
Features
Very low collector-emitter saturation voltage
High current gain characteristic 4
Fast switching speed
Surface mounting device in medium power 3
SOT-223 package 2
1
Applications SOT-223
Emergency lighting
Voltage regulators
Relay drivers
High efficiency low voltage switching
Figure 1. Internal schematic diagram
applications
Description
The device is manufactured in PNP planar
technology by using a "Base Island" layout. The
resulting transistor shows exceptional high gain
performances coupled with very low saturation
voltage.
Table 1. Device summary
Order codes Marking Package Packaging
STN951 N951 SOT-223 Tape and reel
October 2008 Rev 3 1/8
www.st.com 8
STN951
Contents
1 Electrical ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
4 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2/8
STN951 Electrical ratings
1 Electrical ratings
Table 2. Absolute maximum rating
Symbol Parameter Value Unit
VCBO Collector-base voltage (IE = 0) -60 V
VCEO Collector-emitter voltage (IB = 0) -60 V
VEBO Emitter-base voltage (IC = 0) -6 V
IC Collector current -5 A
ICM Collector peak current (tP < 5 ms) -10 A
IB Base current -1 A
IBM Base peak current (tP < 5 ms) -2 A
Ptot Total dissipation at Tamb = 25
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