LESHAN RADIO COMPANY, LTD.
Digital transistors (built-in resistors)
• Features
1) Built-in bias resistors enable the configuration of an inverter circuit without
connecting external input resistors (see equivalent circuit).
2) The bias resistors consist of thinfilm resistors with complete isolation to
allow positive biasing of the input. They also have the advantage of almost
completely eliminating parasitic effects.
3) Only the on/ off conditions need to be set for operation, making device design
easy.
• Structure
PNP digital transistor ( built-in resistors)
• Equivalent circuit
2.9 + 0.2
1.9+ 0.2
0.95+ 0.95
DTC124EKA
1.1
+
-
0.2
0.1
0.8 + 0.1
R1
IN
R2
OUT
GND
IN
OUT
GND
(1)
(2)
0 ~ 0.1
(3)
0.4
+
-
0.1
0.05
0.15
+
-
0.1
0.06
All terminals have same dimensions
(1) GND
(2) IN
(3) OUT
EIAJ: SC— 59
• Absolute maximum ratings(Ta=25 °C)
Parameter
symbol
Supply voltage
Input voltage
Output current
Power dissipation
Junction temperature
Storage temperature
V cc
V IN
IO
I C(Max.)
Pd
Tj
T stg
• Elecrical characteristics(Ta=25°C)
Parameter
symbol
Input voltage
V I(off)
V I(on)
Output Voltage
V O(on)
Input current
II
Output current
I O(off)
DC current gain
GI
Input resistance
R1
Resistance ratio
R 2/ R1
Transition frequency
fT
*Transition frequency of the device
Min.
—
3
—
—
—
56
15.4
0.8
—
limits
unit
50
V
–10~+40
V
30
mA
100
200
mW
150
°C
–55~+150
°C
Typ. Max. Unit Conditions
—
0.5
VCC= 5V, IO= 100 µA
V
—
—
VO= 0.2V, IO= 5 mA
0.1
0.3
V
IO/II= 10mA / 0.5mA
—
0.36
mA
VI= 5V
—
0.5
µA
VCC= 50 V, VI = 0 V
—
—
—
VO= 5V, IO= 5mA
22
28.6
KΩ
—
1
1.2
—
—
250
—
MHz VCE= 10V,IE= –5 mA,f=100MHz*
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