
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
R1
IN
R2
IN
OUT
GND
OUT
GND
2.9 + 0.2
1.9+ 0.2
0.95+ 0.95
(2)
(1)
- 0.1
0.2
+ 0.2
+
1.6
+ 0.1
- 0.05
2.8
(3)
0.4
All terminals have same dimensions
DTC124EKA
+ 0.2
1.1
- 0.1
0.8 + 0.1
0 ~ 0.1
(1) GND
0.6
0.15
+ 0.1
- 0.06
0.3 ~
(2) IN
(3) OUT
EIAJ: SC— 59
Absolute maximum ratings(T
•
Parameter symbol limits unit
Supply voltage V
Input voltage V
Output current
Power dissipation P
Junction temperature T
Storage temperature T
Elecrical characteristics(Ta=25°C)
•
Parameter symbol Min. Typ. Max. Unit Conditions
Input voltage
Output Voltage V
Input current I
Output current I
DC current gain G
Input resistance R
Resistance ratio R 2 / R
Transition frequency f
*Transition frequency of the device
I
C(Max.)
a
cc
IN
I
O
d
j
stg
=25 °C)
V
I(off)
V
I(on)
O(on)
I
O(off)
I
1
1
T
50 V
–10~+40 V
30
100
mA
200 mW
150 °C
–55~+150 °C
— — 0.5
3— — V
VCC= 5V, IO= 100 µA
V
O
= 0.2V, IO= 5 mA
— 0.1 0.3 V IO/II= 10mA / 0.5mA
— — 0.36 mA VI= 5V
— — 0.5 µAVCC= 50 V, VI = 0 V
56 — — — VO= 5V, IO= 5mA
15.4 22 28.6 KΩ —
0.8 1 1.2 — —
— 250 — MHz VCE= 10V,IE= –5 mA,f=100MHz*
P16–1/2

LESHAN RADIO COMPANY, LTD.
ELECTRICAL CHARACTERISTIC CURVES
DTC143EKA
100
50
20
V O = 0.3V
( V )
10
I(on)
5
2
1
0.5
0.2
INPUT VOL TAGE: V
0.1
100µ 200µ 500µ 1m 2m 5m 10m 20m 50m 100m
T A = –40°C
25°C
100°C
OUTPUT CURRENT: I O (A)
Figure 1. Input voltage vs.output current
(ON characteristics)
1K
500
200
I
100
50
20
T A = 100°C
25°C
–40°C
V O = 5 V
10m
5m
V CC= 5 V
2m
( A )
O
OUTPUT CURRENT: I
T A = 100°C
1m
500µ
200µ
100µ
50µ
20µ
10µ
5µ
2µ
1µ
0 0.5 1.0 1.5 2.0 2.5 3.0
25°C
–40°C
INPUT VOLTAGE: V
I(ON)
(V)
Figure 2. Output current vs.input voltage
(OFF characteristics)
1
0.5
0.2
( V )
O(on)
0.1
0.05
0.02
T A = 100°C
25°C
–40°C
I O / I I = 20
10
5
2
DC CURRENT GAIN: G
1
100µ 200µ 500µ 1m 2m 5m 10m 20m 50m 100m
OUTPUT CURRENT: I O (A)
Figure 3. DC current gain vs.output current
0.01
.005
.002
OUTPUT VOLTAGE: V
.001
100µ 200µ 500µ 1m 2m 5m 10m 20m 50m 100m
OUTPUT CURRENT: I O (A)
Figure 4. Output voltage vs.output current
P16–2/2