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2STR1215
Low voltage fast-switching NPN power transistor
Features

Very low collector-emitter saturation voltage High current gain characteristic Fast switching speed Miniature SOT-23 plastic package for surface mounting circuits
Applications
SOT-23

LED Battery charger Voltage and relay driver Voltage regulation Figure 1. Internal schematic diagram
Description
The 2STR1215 is a NPN 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. The complementary PNP is the 2STR2215.
Table 1.
Device summary
Marking 115 Package SOT-23 Packaging Tape and reel
Order code 2STR1215
September 2008
Rev 2
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www.st.com 10
2STR1215
Contents
1 2 Electrical ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.1 2.2 Electrical characteristics (curves) ............................ 5 Test circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3 4
Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
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2STR1215
Electrical ratings
1
Electrical ratings
Table 2.
Symbol VCBO VCEO VEBO IC ICM Ptot Tstg TJ
Absolute maximum rating
Parameter Collector-base voltage (IE = 0) Collector-emitter voltage (IB = 0) Emitter-base voltage (IC = 0) Collector current Collector peak current (tP < 5 ms) Total dissipation at Tamb = 25 C Storage temperature Max. operating junction temperature Value 15 15 5 1.5 3 0.5 -65 to 150 150 Unit V V V A A W C C
Table 3.
Symbol
Thermal data
Parameter __max Value 250 Unit C/W
Rthj-amb(1) Thermal resistance junction-amb (1) Device mounted on PCB area of 1cm2
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Electrical characteristics
2STR1215
2
Electrical characteristics
(Tcase = 25C unless otherwise specified) Table 4.
Symbol ICBO IEBO
Electrical characteristics
Parameter Collector cut-off current (IE =0) Emitter cut-off current (IC =0) Collector-base breakdown voltage (IE = 0) Test conditions VCB = 15 V VEB = 4 V Min. Typ. Max. 0.1 Unit A
0.1
A
V(BR)CBO
IC = 100 A
15
V
Collector-emitter V(BR)CEO (1) breakdown voltage (IB = 0) V(BR)EBO VCE(sat) (1) Emitter-base breakdown voltage (IC = 0) Collector-emitter saturation voltage Base-emitter saturation voltage
IC = 10 mA
15
V
IE = 100 A IC = 0.1 A IC = 1 A IC = 2 A IC = 1 A IC = 50 mA IB = 1mA IB = 100 mA IB = 200 mA IB = 100 mA VCE = 2 V VCE = 2 V VCE = 2 V VCE = 2 V f = 1 MHz
5 0.15 0.25 0.4 0.9 200 200 130 80 16 280 560 0.5 0.85 1.25
V V V V V
VBE(sat) (1)
hFE (1)
DC current gain
IC = 0.5 A IC = 1 A IC = 2 A
CCBO
Collector-base capacitance (IE = 0 ) Resistive load Turn-on time Turn-off time
VCB = 10 V IC = 1.5 A
pF
ton toff
V CC = 10 V
IB1 = -IB2 = 150 mA
60 310
ns ns
1. Pulsed duration = 300 s, duty cycle 1.5%
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2STR1215
Electrical characteristics
2.1
Electrical characteristics (curves)
Figure 2. DC current gain Figure 3. Collector-emitter saturation voltage
Figure 4.
Base-emitter saturation voltage
Figure 5.
Resistive load switching time
Figure 6.
Resistive load switching time
Figure 7.
Capacitance
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Electrical characteristics
2STR1215
2.2
Test circuits
Figure 8. Resistive load switching test circuit
1) Fast electronic switch 2) Non-inductive resistor
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2STR1215
Package mechanical data
3
Package mechanical data
In order to meet environmental requirements, ST offers these devices in ECOPACK(R) packages. These packages have a Lead-free second level interconnect. The category of second level interconnect is marked on the package and on the inner box label, in compliance with JEDEC Standard JESD97. The maximum ratings related to soldering conditions are also marked on the inner box label. ECOPACK is an ST trademark. ECOPACK specifications are available at: www.st.com
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Package mechanical data
2STR1215
SOT-23 mechanical data
mm. DIM. min. A A1 B C D e e1 E H L S 0.35 0.89 0 0.3 0.085 2.75 0.85 1.7 1.2 2.1 0.6 0.65 typ max. 1.4 0.1 0.51 0.18 3.04 1.05 2.1 1.6 2.75
0053390_G
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2STR1215
Revision history
4
Revision history
Table 5.
Date 09-Feb-2006 18-Jul-2006 08-Sep-2008
Document revision history
Revision 1 2 3 Initial release New template Updated the SOT-23 mechanical data. Changes
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2STR1215
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