MMBTA42
SMALL SIGNAL NPN TRANSISTOR
PRELIMINARY DATA
s
SILICON EPITAXIAL PLANAR NPN HIGH
VOLTAGE TRANSISTOR
s
MINIATURE SOT-23 PLASTIC PACKAGE
FOR SURFACE MOUNTING CIRCUITS
s
TAPE AND REEL PACKING
s
THE PNP COMPLEMENTARY TYPE IS
MMBTA92
APPLICATIONS
s
VIDEO AMPLIFIER CIRCUITS (RGB
CATHODE CURRENT CONTROL)
s
TELEPHONE WIRELINE INTERFACE (HOOK
SWITCHES, DIALER CIRCUITS)
INTERNAL SCHEMATIC DIAGRAM
January 2003
ABSOLUTE MAXIMUM RATINGS
Symbol
Parameter
Value
Unit
V
CBO
Collector-Base Voltage (I
E
= 0)
300
V
V
CEO
Collector-Emitter Voltage (I
B
= 0)
300
V
V
EBO
Emitter-Base Voltage (I
C
= 0)
6
V
I
C
Collector Current
0.5
A
I
CM
Collector Peak Current
0.6
A
P
tot
Total Dissipation at T
C
= 25
o
C
350
mW
T
stg
Storage Temperature
-65 to 150
o
C
T
j
Max. Operating Junction Temperature
150
o
C
Type
Marking
MMBTA42
A42
SOT-23
1/4
THERMAL DATA
R
t hj-a mb
Thermal Resistance Junction-Ambient Max
357.1
o
C/W
Device mounted on a PCB area of 1 cm
2
ELECTRICAL CHARACTERISTICS (T
case
= 25
o
C unless otherwise specified)
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
I
CBO
Collector Cut-off
Current (I
E
= 0)
V
CB
= 200 V
100
nA
V
(BR)CBO
Collector-Base
Breakdown Voltage
(I
E
= 0)
I
C
= 100
A
300
V
V
(BR)CEO
Collector-Emitter
Breakdown Voltage
(I
B
= 0)
I
C
= 1 mA
300
V
V
(BR)EBO
Emitter-Base
Breakdown Voltage
(I
C
= 0)
I
E
= 100
A
6
V
V
CE(sat)
Collector-Emitter
Saturation Voltage
I
C
= 20 mA I
B
= 2 mA
0.5
V
V
BE(sat)
Base-Emitter
Saturation Voltage
I
C
= 20 mA I
B
= 2 mA
0.9
V
h
FE
DC Current Gain
I
C
= 1 mA V
CE
= 10 V
I
C
= 10 mA V
CE
= 10 V
I
C
= 30 mA V
CE
= 10 V
25
40
40
f
T
Transition Frequency
I
C
= 10 mA V
CE
= 20 V f = 20 MHz
50
MHz
C
CBO
Collector-Base
Capacitance
I
E
= 0 V
CB
= 10 V f = 1 MHz
6
pF
C
EBO
Emitter-Base
Capacitance
I
C
= 0 V
EB
= 2 V f = 1 MHz
22
pF
Pulsed: Pulse duration = 300
s, duty cycle
1.5 %
MMBTA42
2/4
DIM.
mm
mils
MIN.
TYP.
MAX.
MIN.
TYP.
MAX.
A
0.85
1.1
33.4
43.3
B
0.65
0.95
25.6
37.4
C
1.20
1.4
47.2
55.1
D
2.80
3
110.2
118
E
0.95
1.05
37.4
41.3
F
1.9
2.05
74.8
80.7
G
2.1
2.5
82.6
98.4
H
0.38
0.48
14.9
18.8
L
0.3
0.6
11.8
23.6
M
0
0.1
0
3.9
N
0.3
0.65
11.8
25.6
O
0.09
0.17
3.5
6.7
0044616/B
SOT-23 MECHANICAL DATA
MMBTA42
3/4
Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences
of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is
granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specification mentioned in this publication are
subject to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products
are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics.
The ST logo is a trademark of STMicroelectronics
2002 STMicroelectronics Printed in Italy All Rights Reserved
STMicroelectronics GROUP OF COMPANIES
Australia - Brazil - Canada - China - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan - Malaysia - Malta - Morocco -
Singapore - Spain - Sweden - Switzerland - United Kingdom - United States.
http://www.st.com
MMBTA42
4/4
PDF 
ZIP