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2STF2340
2STN2340

Low voltage fast-switching PNP power transistors

Features
Very low collector-emitter saturation voltage
High current gain characteristic 4
4
Fast switching speed
3 3
2 2
Applications 1 1

LED
Motherboard & hard disk drive SOT-89 SOT-223

Mobile equipment
DC-DC converter

Figure 1. Internal schematic diagram
Description
The devices are PNP transistors manufactured
using new "PB-HDC" (power bipolar high density
current) technology. The resulting transistor
shows exceptional high gain performances
coupled with very low saturation voltage.
The 2STF2340 complementary PNP is the
2STF1340.

Table 1. Device summary
Order codes Marking Packages Packaging

2STF2340 2340 SOT-89 Tape and reel
2STN2340 N2340 SOT-223 Tape and reel

October 2009 Doc ID 14222 Rev 2 1/10
www.st.com 10
Electrical ratings 2STF2340, 2STN2340

1 Electrical ratings

Table 2. Absolute maximum rating
Value

Symbol Parameter 2STF2340 2STN2340 Unit

SOT-89 SOT-223

VCES Collector-emitter voltage (VBE = 0) -40 V
VCEO Collector-emitter voltage (IB = 0) -40 V
VEBO Emitter-base voltage (IC = 0) -5 V
IC Collector current -3 A
ICM Collector peak current (tP < 5 ms) -6 A
PTOT Total dissipation at Tamb = 25