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UTC DTC124T
NPN DIGITAL TRANSISTOR
NPN DIGITAL TRANSISTOR
(BUILT-IN RESISTOR)
FEATURES
*Built-in bias resistors enable the configuration of an inverter
circuit without connecting external input resistors.
*The bias resistors consist of thin-film resistors with
complete isolation to allow positive biasing of the input
They also have the advantage of almost completely
eliminating parasitic effects.
*Only the on / off conditions need to be set for operation,
making device design easy.
EQUIVALENT CIRCUIT
R1
B
C
MARKING
CC4T
E
2
1
3
SOT-23
1: EMITTER 2: BASE 3: COLLECTOR
ABSOLUTE MAXIMUM RATINGS (Ta=25)
PARAMETER
SYwwMw.BDaOtaSLheet4U.com
Collector-base voltage
VCBO
Collector-emitter voltage
VCEO
Emitter-base voltage
VEBO
Collector current
Ic
Collector Power dissipation
Pc
Junction temperature
Tj
Storage temperature
Tstg
RATINGS
50
50
5
100
200
150
-55~+150
UNIT
V
V
V
mA
mW
ELECTRICAL CHARACTERISTICS (Ta=25°C,unless otherwise specified)
PARAMETER
SYMBOL
TEST CONDITIONS
MIN TYP MAX UNIT
Collector-base breakdown voltage
BVCBO Ic=50μA
50 V
Collector-emitter breakdown voltage
BVCEO Ic=1mA
50 V
Emitter-base breakdown voltage
BVEBO IE=50μA
5V
Collector cutoff current
ICBO
VCB=50V
0.5 μA
Emitter cutoff current
IEBO
VEB=4V
0.5 μA
Collector-emitter saturation voltage
VCE(sat) Ic=5mA, IB=0.5mA
0.3 V
DC current transfer ratio
hFE VCE=5V, Ic=1mA
100 250 600
Input resistance
R1
15.4 22 28.6 kΩ
Transition frequency
fT VCE=10V, IE= -5mA, f=100MHz * 250 MHz
* Transition frequency of the device
UTC
UNISONIC TECHNOLOGIES CO. LTD 1
QW-R206-060,A

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UTC DTC124T
NPN DIGITAL TRANSISTOR
ELECTRICAL CHARACTERISTIC CURVES
Fig.1 DC current gain vs.collector current
1k
VCE =5V
500
200
100 Ta=100
50 25
-40
20
10
5
2
1
100μ 200μ 500μ1m 2m 5m 10m 20m 50m 100m
COLLECTOR CURRENT, Ic (A)
1
500m
Fig.2 Collector-emitter saturation 
voltage vs. collector current
Ic/IB =10
200m
100m
50m
Ta=100
25
-40
20m
10m
5m
2m
1m
100μ 200μ 500μ1m 2m 5m 10m 20m 50m 100m
COLLECTOR CURRENT, Ic (A)
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exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or
other parameters) listed in products specifications of any and all UTC products described or contained
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presented in this document does not form part of any quotation or contract, is believed to be accurate
and reliable and may be changed without notice.
UTC
UNISONIC TECHNOLOGIES CO. LTD 2
QW-R206-060,A