Page 1
Features
■ Surface mounting devices in medium power
SOT-223 and SOT-89 packages
■ Available in tape and reel packaging
STF724
STN724
NPN medium power transistors
2
Applications
■ Voltage regulation
■ Relay driver
■ Generic switch
Description
The STF724 and STN724 are NPN transistors
manufactured using Planar technology resulting in
rugged high performance devices.
3
2
1
SOT-223
Figure 1. Internal schematic diagram
SOT-89
Table 1. Device summary
Order code Marking Package Packaging
STF724 724 SOT-89
Tape & reel
STN724 N724 SOT-223
April 2008 Rev 4 1/11
www.st.com
11
Page 2
STF724 - STN724
Contents
1 Electrical ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.1 Electrical characteristics (curves) . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
3 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
4 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2/11
Page 3
STF724 - STN724
1 Electrical ratings
Table 2. Absolute maximum rating
Symbol Parameter Value Unit
STF724 STN724
V
V
V
I
I
P
T
Collector-base voltage (IE = 0) 60 V
CBO
Collector-emitter voltage (IB = 0)
CEO
Emitter-base voltage (IC = 0) 5 V
EBO
I
Collector current 3 A
C
Collector peak current (tP < 5ms) 6 A
CM
I
Base current 1 A
B
Base peak current (tP < 5ms) 2 A
BM
Total dissipation at T
tot
Storage temperature -65 to 150 °C
stg
T
Max. operating junction temperature 150 °C
J
= 25°C 1.4 1.6 W
amb
30 V
Table 3. Thermal data
Symbol Parameter Value Unit
SOT-89 SOT-223
R
thj-amb
1. Device mounted on PCB area of 1 cm2.
Thermal resistance junction-ambient
(1)
_max
89 78 °C/W
3/11
Page 4
Electrical characteristics STF724 - STN724
2 Electrical characteristics
(T
= 25°C unless otherwise specified)
case
Table 4. Electrical characteristics
Symbol Parameter Test conditions Min. Typ. Max. Unit
I
CES
I
CEO
I
EBO
V
(BR)CBO
V
(BR)CEO
V
(BR)EBO
V
CE(sat)
V
BE(sat)
h
FE
f
T
1. Pulsed duration = 300 µs, duty cycle ≤ 1.5 %
Collector cut-off current
= 0)
(V
BE
Collector cut-off current
= 0)
(I
B
Emitter cut-off current
= 0)
(I
C
Collector-base breakdown
voltage (I
(1)
Collector-emitter
= 0)
E
breakdown voltage (I
Emitter-base breakdown
voltage (I
Collector-emitter saturation
(1)
= 0)
C
voltage
Base-emitter saturation
(1)
voltage
DC current gain
Transition frequency
= 0)
B
V
CE
V
CE
V
EB
= 100 µA
I
C
= 10 mA
I
C
= 100 µA
I
E
I
= 1 A IB = 50 mA
C
= 2 A IB = 100 mA
I
C
I
= 3 A IB = 15 0mA
C
I
= 2 A IB = 100 mA
C
I
= 100 mA V
C
I
= 1 A V
C
I
= 3 A V
C
V
CE
= 60 V
= 30 V
= 5 V
= 2 V
CE
= 2 V
CE
= 2 V
CE
= 10 V IC = 0.1 A
10 µA
100 µA
10 µA
60 V
30 V
5V
0.4
0.7
1.1
V
V
V
1.2 V
100
300
80
30
100 MHz
4/11
Page 5
STF724 - STN724
2.1 Electrical characteristics (curves)
Figure 2. DC Current Gain Figure 3. DC Current Gain
Figure 4. Collector-emitter saturation
voltage
Figure 6. Switching times on resistive
load
Figure 5. Base-emitter saturation
voltage
Figure 7. Switching times on resistive
load
5/11
Page 6
Electrical characteristics STF724 - STN724
Figure 8. Reverse biased safe
operating area
6/11
Page 7
STF724 - STN724
3 Package mechanical data
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
7/11
Page 8
Package mechanical data STF724 - STN724
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
8/11
0046067_L
Page 9
STF724 - STN724
P025H
SOT-89 MECHANICAL DATA
DIM.
MIN. TYP. MAX. MIN. TYP. MAX.
A 1.4 1.6 55.1 63.0
B 0.44 0.56 17.3 22.0
B1 0.36 0.48 14.2 18.9
C 0.35 0.44 13.8 17.3
C1 0.35 0.44 13.8 17.3
D 4.4 4.6 173.2 181.1
D1 1.62 1.83 63.8 72.0
E 2.29 2.6 90.2 102.4
e 1.42 1.57 55.9 61.8
e1 2.92 3.07 115.0 120.9
H 3.94 4.25 155.1 167.3
L 0.89 1.2 35.0 47.2
mm mils
9/11
Page 10
Revision history STF724 - STN724
4 Revision history
Table 5. Document revision history
Date Revision Changes
29-Mar-2005 1 Initial release.
12-Oct-2005 2 Added new graphics
17-Jul-2006 3 New template
04-Apr-2008 4 SOT-223 mechanical data updated.
10/11
Page 11
STF724 - STN724
y
y
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