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Low voltage fast-switching PNP power bipolar transistor
Features
The device is qualified for automotive
application
Very low collector-emitter saturation voltage
4
High current gain characteristic
Fast switching speed 3
Surface mounting device in medium power
2
1
SOT-223 package
SOT-223
Applications
Emergency lighting
LED
Figure 1. Internal schematic diagram
CCFL drivers (back lighting)
Voltage regulation
Relay driver
Description
The device in a PNP transistor manufactured
using new "PB-HCD" (Power Bipolar High Current
Density) technology. The resulting transistor
shows exceptional high gain performances
coupled with very low saturation voltage.
Table 1. Device summary
Order code Marking Package Packaging
2STN2540-A N2540 SOT-223 Tape & reel
January 2008 Rev 2 1/9
www.st.com 9
Electrical ratings 2STN2540-A
1 Electrical ratings
Table 2. Absolute maximum rating
Symbol Parameter Value Unit
VCBO Collector-base voltage (IE = 0) -40 V
VCEO Collector-emitter voltage (IB = 0) -40 V
VEBO Emitter-base voltage (IC = 0) -6 V
IC Collector current -5 A
ICM Collector peak current (tP < 5ms) -10 A
IBM Base peak current (tP < 5ms) -2 A
Ptot Total dissipation at Tamb = 25
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