2STF2550
2STN2550
Low voltage high performance PNP power transistors
Preliminary Data
Features
■
■
■
■
Very low collector-emitter saturation voltage
High current gain characteristic
Fast switching speed
Surface mounting devices in medium power
SOT-89 and SOT-223 packages
4
SOT-89
1
2
3
4
1
2
3
SOT-223
Applications
■
■
■
■
■
■
Emergency lighting
LED
Motherboard and hard disk drive
Mobile equipment
Battery charger
Voltage regulation
Description
The 2STF2550 and 2STN2550 are PNP transistors 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.
Figure 1.
Internal schematic diagram
Table 1.
Device summary
Order codes
2STF2550
2STN2550
Marking
2550
N2550
Package
SOT-89
SOT-223
Packaging
Tape and reel
November 2008 Rev 1
This is preliminary information on a new product now in development or undergoing evaluation. Details are subject to change without notice.
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8
Electrical ratings
1
Electrical ratings
2STF2550 - 2STN2550
Table 2.
Absolute maximum rating
Symbol Parameter
V
CES
V
CEO
V
EBO
I
C
I
CM
I
B
P
TOT
T stg
T
J
Collector-emitter voltage (V
CE
= 0)
Collector-emitter voltage (I
B
= 0)
Emitter-base voltage (I
C
= 0)
Collector current
Collector peak current (t
P
< 5 ms)
Base current
Total dissipation at T amb
= 25 °C
Storage temperature
Max. operating junction temperature
Value
2STF2550 2STN2550
SOT-89 SOT-223
-50
-50
-5
-5
-10
-1
1.4
-65 to 150
150
1.6
Unit
W
°C
°C
A
A
V
A
V
V
Table 3.
Symbol
Thermal data
Parameter
R thj-amb
(1)
Thermal resistance junction-amb __ max
1.
Device mounted on PCB area of 1 cm
2
SOT-89
89
SOT-223
78
Unit
°C/W
2/8
2STF2550 - 2STN2550
2 Electrical characteristics
Electrical characteristics
(T case
= 25 °C unless otherwise specified)
Table 4.
Electrical characteristics
Symbol Parameter Test conditions Min.
Typ.
Max.
Unit
V
V
(BR)CEO
(1)
V
I
I
CBO
EBO
(BR)CBO
(BR)EBO
Collector cut-off current
(I
E
= 0)
Emitter cut-off current
(I
C
= 0)
Collector-base breakdown voltage
(I
E
= 0)
Collector-emitter breakdown voltage
(I
B
= 0)
Emitter-base breakdown voltage (I
C
= 0)
V
CB
= -50 V
V
EB
= -4 V
I
C
= -100
μ
A
I
C
= -10 mA
I
E
= -100
μ
A h
FE
(1)
DC current gain
I
C
= -0.5 A V
CE
= -2 V
I
C
= -2 A V
CE
= -2 V
I
C
= -3 A V
CE
= -2 V
I
C
= -5 A V
CE
= -5 V
V
CE(sat)
(1)
Collector-emitter saturation voltage
I
C
= -3 A I
B
= -300 mA
V
BE(sat)
(1)
Base-emitter saturation voltage
I
C
= -3 A I
B
= -300 mA
1.
C
CBO
Collector-base capacitance (I
E
= 0)
V
CB
= -10 V, f = 1 MHz
Resistive load t on t off
Turn-on time
Turn-off time
I
C
= -1.5 A V
CC
= -10 V
I
B1
= -I
B2
= -150 mA
Pulsed duration = 300
μ s, duty cycle
≤
1.5%
-50
-50
-5
110
80
350
70
-0.1
-0.1
350
-0.39
-0.55
-1
30
80
3 00
-1.2
μ
A
μ
A
V
V
V
V
V pF ns ns
3/8
Package mechanical data
3 Package mechanical data
2STF2550 - 2STN2550
In order to meet environmental requirements, ST offers these devices in ECOPACK® 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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2STF2550 - 2STN2550
DIM.
E
H
V
D e e1
A
A1
B
B1 c
Package mechanical data min.
S
OT-22
3
mechanical data
mm.
typ
0.02
0.60
2.90
0.24
6.
3 0
3 .
3 0
6.70
0.70
3 .00
0.26
6.50
2.
3 0
4.60
3 .50
7.00
max.
1.
8 0
0.1
0.
8 5
3 .15
0.
3 5
6.70
3 .70
7.
3 0
10 o
0046067_L
5/8
Package mechanical data 2STF2550 - 2STN2550
DIM.
e1
H
L
D
D1
E e
B1
C
C1
A
B
4.4
1.62
2.29
1.42
2.92
3 .94
0.
8 9
MIN.
1.4
0.44
0.
3 6
0.
3 5
0.
3 5
S
OT-
8
9 MECHANICAL DATA
mm
TYP.
4.6
1.
83
2.6
1.57
3 .07
4.25
1.2
MAX.
1.6
0.56
0.4
8
0.44
0.44
17 3 .2
6 3 .
8
90.2
55.9
115.0
155.1
3 5.0
MIN.
55.1
17.
3
14.2
1 3 .
8
1 3 .
8 mil s
TYP.
1 8 1.1
72.0
102.4
61.
8
120.9
167.
3
47.2
MAX.
6 3 .0
22.0
1 8 .9
17.
3
17.
3
P025H
6/8
2STF2550 - 2STN2550
Table 5.
Date
Document revision history
Revision
12-Nov-2008 1 Initial release
Changes
Revision history
7/8
2STF2550 - 2STN2550
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