Continental Device India Limited
An ISO/TS 16949, ISO 9001 and ISO 14001 Certified Company
SOT-23 Formed SMD Package
CMBT3903
CMBT3904
SILICON EPITAXIAL TRANSISTORS
N–P–N transistors
Marking
CMBT3903 = 1Y
CMBT3904 = 1A
PACKAGE OUTLINE DETAILS
ALL DIMENSIONS IN m
m
Pin configuration
1 = BASE
2 = EMITTER
3 = COLLECTOR
3
1
2
ABSOLUTE MAXIMUM RATINGS
Collector–base voltage (open emitter)
Collector–emitter voltage (open base)
Emitter–base voltage (open collector)
Collector current (DC)
Total power dissipation up to T
amb
= 25 °C
DC current gain
CMBT3903
I
C
= 10 mA; V
CE
= 1 V
CMBT3904
I
C
= 10 mA; V
CE
= 1 V
Transition frequency at f = 35 MHz
I
C
= 10 mA; V
CE
= 20 V
V
CB0
V
CE0
V
EB0
I
C
P
tot
h
FE
h
FE
f
T
max.
max.
max.
max.
max.
>
<
>
<
>
60
40
6
200
250
50
150
100
300
V
V
V
mA
mW
300
MHz
Continental Device India Limited
Data Sheet
Page 1 of 3
CMBT3903
CMBT3904
RATINGS
(at T
A
= 25°C unless otherwise specified)
Limiting values
Collector–base voltage (open emitter)
Collector–emitter voltage (open base)
Emitter–base voltage (open collector)
Collector current (d.c.)
Total power dissipation
up to T
amb
= 25 °C
Storage temperature
°C
Junction temperature
THERMAL RESISTANCE
T
j =
P (R
th j–t +
R
th t–s +
R
th s–a
)
+
T
amb
Thermal resistance
from junction to ambient
CHARACTERISTICS
T
amb =
25 °C unless otherwise specified
Collector–emitter breakdown voltage
I
C
= 1 mA; l
B
= 0
Collector–base breakdown voltage
I
C
= 10µA; I
E
= 0
Emitter–base breakdown voltage
I
E
= 10µA; I
C
= 0
Collector cut–off current
V
CE
= 30 V; V
EB
= 3 V
Output capacitance at f = 1 MHz
I
E
= 0; V
CB
= 5 V
Input capacitance at f = 1 MHz
I
C
= 0; V
BE
= 0,5 V
Base current
with reverse biased emitter junction
V
EB
= 3 V; V
CE
= 30 V
Saturation voltages
I
C
= 10 mA; l
B
= 1 mA
I
C
= 50 mA; 1
B
= 5 mA
I
C
= 10 mA; l
B
= 1 mA
I
C
= 50 mA; l
B
= 5 mA
V
CB0
V
CE0
V
EB0
I
C
P
tot
T
stg
T
j
max.
max.
max.
max.
60
40
6
200
V
V
V
mA
max. 250
mW
–55 to +150
max.
150 ° C
R
th j–a
=
500
K/W
V
(BR)CEO
V
(BR)CBO
V
(BR)EBO
I
CEX
C
c
C
e
min.
min.
min.
max.
max.
max.
40 V
60 V
6 V
50 nA
4 pF
8 pF
I
BEX
max.
50 nA
V
CEsat
V
CEsat
V
BEsat
V
BEsat
max.
max.
0.2 V
0.3 V
min. 0.65 V
max. 0.85 V
max. 0.95 V
Continental Device India Limited
Data Sheet
Page 2 of 3
CMBT3903
CMBT3904
CMBT3903
CMBT3904
D.C. current gain *
I
C
= 0,1 mA; V
CE
= 1 V
I
C
= 1 mA; V
CE
= 1 V
I
C
= 10 mA; V
CE
= 1 V
I
C
= 50 mA; V
CE
= 1 V
I
C
= 100 mA; V
CE
= 1 V
Transition frequency at f = 100 MHz
I
C
= 10 mA; V
CE
= 20 V
Noise figure at R
S
= 1 kΩ
I
C
= 100
µA;
V
CE
= 5 V
f = 10 Hz to 15,7 kHz
Small Signal Current Gain
V
CE
= 10V; I
C
= 1 mA; f = 1 KHz
h
FE
h
FE
h
FE
h
FE
h
FE
f
T
>
>
>
<
>
>
20
35
50
150
30
15
40
70
100
300
60
30
300
MHz
min. 250
F
max.
6
5
dB
h
fe
min. 50
max. 200
100
400
Disclaimer
The product information and the selection guides facilitate selection of the CDIL's Discrete Semiconductor Device(s) best suited
for application in your product(s) as per your requirement. It is recommended that you completely review our Data Sheet(s) so as
to confirm that the Device(s) meet functionality parameters for your application. The information furnished on the CDIL Web Site/
CD are believed to be accurate and reliable. CDIL however, does not assume responsibility for inaccuracies or incomplete
information. Furthermore, CDIL does not assume liability whatsoever, arising out of the application or use of any CDIL product;
neither does it convey any license under its patent rights nor rights of others. These products are not designed for use in life
saving/support appliances or systems. CDIL customers selling these products (either as individual Discrete Semiconductor
Devices or incorporated in their end products), in any life saving/support appliances or systems or applications do so at their own
risk and CDIL will not be responsible for any damages resulting from such sale(s).
CDIL strives for continuous improvement and reserves the right to change the specifications of its products without prior notice.
CDIL is a registered Trademark of
Continental Device India Limited
C-120 Naraina Industrial Area, New Delhi 110 028, India.
Telephone + 91-11-2579 6150, 5141 1112 Fax + 91-11-2579 5290, 5141 1119
email@cdil.com
www.cdilsemi.com
Continental Device India Limited
Data Sheet
Page 3 of 3
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