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Low voltage high performance NPN power transistor
Features
■ Very low collector-emitter saturation voltage
■ High current gain characteristic
■ Fast switching speed
Applications
2STL1525
Preliminary data
■ Emergency lighting
■ LED
■ Motherboard and hard disk drive
■ Mobile equipment
■ Battery charger
■ Voltage regulation
Description
The device 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.
TO-92L
Figure 1. Internal schematic diagram
Table 1. Device summary
Order codes Marking Package Packaging
2STL1525 2STL1525 TO-92L Bulk
2STL1525-AP 2STL1525 TO-92L-AP Ammopack
July 2009 Doc ID 16054 Rev 1 1/6
This is preliminary information on a new product now in development or undergoing evaluation. Details are subject to
change without notice.
www.st.com
6
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Electrical ratings 2STL1525
1 Electrical ratings
Table 2. Absolute maximum ratings
Symbol Parameter Value Unit
V
CEX
V
CEO
V
EBO
I
I
CM
I
P
TOT
T
stg
T
Table 3. Thermal data
Collector-emitter voltage (VBE = -1.5 V) 95 V
Collector-emitter voltage (IB = 0) 25 V
Emitter-base voltage (IC = 0) 5 V
Collector current 5 A
C
Collector peak current (tP < 5 ms) 10 A
Base current 1 A
B
Total dissipation at T
= 25 °C 1 W
amb
Storage temperature -65 to 150 °C
Max. operating junction temperature 150 °C
J
Symbol Parameter Value Unit
R
thJA
Thermal resistance junction-ambient __max 125 °C/W
2/6 Doc ID 16054 Rev 1
Page 3
2STL1525 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)CEX
V
(BR)CEO
V
(BR)EBO
h
FE
V
CE(sat)
V
BE(sat)
C
CBO
Collector cut-off current
= 0)
(I
E
Emitter cut-off current
= 0)
(I
C
Collector-emitter
breakdown voltage
= -1.5 V)
(V
BE
Collector-emitter
(1)
breakdown voltage
= 0)
(I
B
Emitter-base breakdown
voltage (IC = 0)
(1)
DC current gain
Collector-emitter
(1)
saturation voltage
Base-emitter saturation
(1)
voltage
Collector-base
capacitance (IE = 0)
V
= 50 V 0.1 µA
CB
V
= 4 V 0.1 µA
EB
= 1 mA 95 V
I
C
= 10 mA 25 V
I
C
I
= 100 µA 5 V
E
IC = 0.5 A V
IC = 3 A V
= 5 A V
I
C
= 3 A IB = 300 mA
I
C
= 3.5 A IB = 40 mA
I
C
= 3 A IB = 300 mA 1.2 V
I
C
V
= 10 V, f = 1 MHz 20 pF
CB
CE
CE
CE
= 2 V
= 2 V
= 5 V
100
300
150
220
500mVmV
f
T
Transition frequency VCE = 10 V IC = 50 mA 120 MHz
Resistive load
t
on
t
off
1. Pulse test: pulse duration ≤ 300 µs, duty cycle ≤ 2%
Turn-on time
Turn-off time
= 1.5 A V
I
C
I
= -I
B1
= 150 mA
B2
CC
= 10 V
90
700
ns
ns
Doc ID 16054 Rev 1 3/6
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Package mechanical data 2STL1525
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.
Table 5. TO-92L mechanical data
mm
Dim
Min. Typ. Max.
A 7.80 8.20
b 0.35 0.45
D 4.70 5.10
D1 4
E 3.70 4.10
e 2.44 2.64
e1 1.27
L 13.30 14.30
S1 1.28 1.58
W 0.35 0.55
Figure 2. TO-92L drawing mechanical data
7854933_Rev_A
4/6 Doc ID 16054 Rev 1
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2STL1525 Revision history
4 Revision history
Table 6. Document revision history
Date Revision Changes
31-Jul-2009 1 Initial release.
Doc ID 16054 Rev 1 5/6
Page 6
2STL1525
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