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Low voltage fast-switching PNP power transistors
Features
■ Very low collector-emitter saturation voltage
■ High current gain characteristic
■ Fast switching speed
Applications
■ LED
■ Motherboard & hard disk drive
■ Mobile equipment
■ DC-DC converter
2STF2340
2STN2340
4
2
1
SOT-89
4
3
SOT-223
3
2
1
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
Figure 1. Internal schematic diagram
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
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Electrical ratings 2STF2340, 2STN2340
1 Electrical ratings
Table 2. Absolute maximum rating
Val u e
Symbol Parameter
SOT-89 SOT-223
V
V
V
I
P
T
Collector-emitter voltage (VBE = 0) -40 V
CES
Collector-emitter voltage (IB = 0) -40 V
CEO
Emitter-base voltage (IC = 0) -5 V
EBO
I
Collector current -3 A
C
Collector peak current (tP < 5 ms) -6 A
CM
Total dissipation at T
TOT
Storage temperature -65 to 150 °C
STG
Max. operating junction temperature 150 °C
T
J
= 25 °C 1.4 1.6 W
amb
Table 3. Thermal data
Symbol Parameter SOT-89 SOT-223 Unit
(1)
R
thJA
1. Device mounted on PCB area of 1 cm
Thermal resistance junction-ambient max 89 78 °C/W
2
Unit2STF2340 2STN2340
2/10 Doc ID 14222 Rev 2
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2STF2340, 2STN2340 Electrical characteristics
2 Electrical characteristics
T
= 25 °C unless otherwise specified
case
Table 4. Electrical characteristics
Symbol Parameter Test conditions Min. Typ. Max. Unit
I
CBO
I
EBO
V
(BR)CBO
V
(BR)CEO
V
(BR)EBO
V
CE(sat)
V
BE(sat)
Collector cut-off current
(IE = 0)
Emitter cut-off current
= 0)
(I
C
Collector-base
(1)
breakdown voltage
= 0)
(I
E
Collector-emitter
(1)
breakdown voltage
= 0)
(I
B
Emitter-base breakdown
voltage (I
Collector-emitter
(1)
C
= 0)
saturation voltage
Base-emitter saturation
(1)
voltage
= - 40 V -0.1 µA
V
CB
= - 5 V -0.1 µA
V
EB
I
= - 100 µA -40 V
C
I
= - 10 mA -40 V
C
= - 100 µA -5 V
I
E
= - 2 A IB = - 100 mA
I
C
= - 3 A IB = - 150 mA
I
C
I
= - 2 A IB = - 100 mA -1.2 V
C
IC = - 0.1 A V
(1)
h
FE
f
t
C
CBO
t
on
t
off
1. Pulse test: pulse duration ≤ 300 µs, duty cycle ≤ 2 %
DC current gain
Transition frequency
Collector-base
capacitance (I
E
= 0)
Resistive load
Turn-on time
Turn-off time
IC = - 1 A V
= - 3 A V
I
C
I
= - 0.1 A V
C
f = 100 MHz
= - 10 V f = 1 MHz 50 pF
V
CB
IC = - 1.5 A V
= - I
I
B(on)
V
BB(off)
B(off)
= 5 V
= - 2 V
CE
= - 2 V
CE
= - 2 V
CE
= - 5 V
CE
= - 10 V
CC
= - 150 mA
-250
-350mVmV
100
180
450
220
100 MHz
80
450
ns
ns
Doc ID 14222 Rev 2 3/10
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Electrical characteristics 2STF2340, 2STN2340
2.1 Electrical characteristics (curves)
Figure 2. Output characteristics Figure 3. Derating curve
Figure 4. DC current gain (VCE = - 2 V) Figure 5. DC current gain (VCE = - 5 V)
Figure 6. Collector-emitter saturation
voltage
Figure 7. Base-emitter saturation
4/10 Doc ID 14222 Rev 2
voltage
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2STF2340, 2STN2340 Electrical characteristics
Figure 8. Resistive load switching on Figure 9. Resistive load switching off
Figure 10. Capacitance curves
2.2 Test circuits
Figure 11. Resistive load switching test circuit
1. Fast electronic switch
2. Non-inductive resistor
Doc ID 14222 Rev 2 5/10
Page 6
Package mechanical data 2STF2340, 2STN2340
3 Package mechanical data
In order to meet environmental requirements, ST offers these devices in different grades of
ECOPACK
specifications, grade definitions and product status are available at: www.st.com.
ECOPACK
®
packages, depending on their level of environmental compliance. ECOPACK®
®
is an ST trademark.
6/10 Doc ID 14222 Rev 2
Page 7
2STF2340, 2STN2340 Package mechanical data
SOT-89 mechanical data
Dim.
Min. Typ. Max.
A 1.40 1.60
B 0.44 0.56
B1 0.36 0.48
C0.35 0.44
C1 0.35 0.44
D 4.40 4.60
D1 1.62 1.83
E2.29 2.60
e 1.42 1.57
e1 2.92 3.07
H 3.94 4.25
K1° 8°
L0.89 1.20
R0.25
mm
7098166_C
Doc ID 14222 Rev 2 7/10
Page 8
Package mechanical data 2STF2340, 2STN2340
SOT-223 mechanical data
DIM.
mm.
min. typ max.
A 1.80
A1 0.02 0.1
B 0.60 0.70 0.85
B1 2.90 3.00 3.15
c 0.24 0.26 0.35
D6.30 6.50 6.70
e2.30
e1 4.60
E 3.30 3.50 3.70
H 6.70 7.00 7.30
V 10
o
8/10 Doc ID 14222 Rev 2
0046067_L
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2STF2340, 2STN2340 Revision history
4 Revision history
Table 5. Document revision history
Date Revision Changes
04-Dec-2007 1 Initial release.
19-Oct-2009 2 Inserted 2STN2340 in SOT-223 package.
Doc ID 14222 Rev 2 9/10
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2STF2340, 2STN2340
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