LESHAN RADIO COMPANY, LTD.
Bias Resistor Transistor
NPN Silicon Surface Mount Transistor
with Monolithic Bias Resistor Network
•
•
Applications
Inverter, Interface, Driver
3
LDTC144WLT1G
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 thin-film 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 the device design easy.
We declare that the material of product compliance with
RoHS requirements.
1
2
SOT-23
•
Absolute maximum ratings
(Ta=25°C)
Parameter
Symbol
Limits
Unit
1
BASE
R1
R2
3
COLLECTOR
2
EMITTER
Supply voltage
Input voltage
Output current
Power dissipation
Junction temperature
Storage temperature
V
CC
V
IN
I
O
I
C(Max.)
P
D
Tj
Tstg
50
−10
to
+40
30
100
200
150
−55
to
+150
V
V
mA
mW
°C
°C
DEVICE MARKING AND RESISTOR VALUES
Device
LDTC144WLT1G
LDTC144WLT3G
Marking
A8P
A8P
R1 (K)
47
47
R2 (K)
22
22
Shipping
3000/Tape & Reel
10000/Tape & Reel
Electrical characteristics
(Ta=25°C)
Parameter
Symbol
Min.
Typ.
Max.
Unit
Conditions
Input voltage
Output voltage
Input current
Output current
DC current gain
Input resistance
Resistance ratio
Transition frequency
V
I(off)
V
I(on)
V
O(on)
I
I
I
O(off)
G
I
R
1
R
2
/R
1
f
T
∗
−
4
−
−
−
56
32.9
0.37
−
−
−
0.1
−
−
−
47
0.47
250
0.8
−
0.3
0.16
0.5
−
61.1
0.57
−
V
V
mA
µA
−
kΩ
−
MHz
V
CC
=
5V, I
O
=
100µA
V
O
=
0.3V, I
O
=
2mA
I
O
=
10mA, I
I
=
0.5mA
V
I
=
5V
V
CC
=
50V, V
I
=
0V
I
O
=
5mA, V
O
=
5V
−
−
V
CE
=
10V, I
E
=
−5mA,
f
=
100MHz
∗
Characteristics of built-in transistor
1/3
LESHAN RADIO COMPANY, LTD.
LDTC144WLT1G
Electrical characteristic curves
100
50
10m
5m
V
O
=0.3V
OUTPUT CURRENT : I
O
(A)
V
CC
=5V
INPUT VOLTAGE : V
I
(
on
) (V)
2m
1m
500µ
200µ
100µ
50µ
20µ
10µ
5µ
Ta=
−40°C
Ta=25°C
Ta=100°C
20
10
5
2
1
500m
200m
100m
100µ 200µ
500µ 1m
2m
5m
10m 20m
50m 100m
Ta=100°C
Ta=
−40°C
Ta=25°C
2µ
1µ
0
500m
1
1.5
2
2.5
3
OUTPUT CURRENT : I
O
(A)
INPUT VOLTAGE : V
I
(
off
) (V)
Fig.1 Input voltage vs. Output current
(ON characteristics)
Fig.2 Output current vs. Input voltage
(OFF characteristics)
1k
500
V
O
=5V
Ta=100°C
I
O
/I
I
=20/1
500m
OUTPUT VOLTAGE : V
O
(
on
) (V)
DC CURRENT GAIN : G
I
200
100
50
Ta=25°C
200m
Ta=100°C
100m
50m
20m
10m
5m
2m
1m
100µ 200µ
500µ 1m
Ta=25°C
Ta=
−40°C
20
10
5
2
1
100µ 200µ
500µ 1m
2m
5m
10m 20m
50m 100m
Ta=
−40°C
2m
5m
10m 20m
50m 100m
OUTPUT CURRENT : I
O
(A)
OUTPUT CURRENT : I
O
(A)
Fig.3 DC current gain vs. Output current
Fig.4 Output voltage vs. Output current
2/3
LESHAN RADIO COMPANY, LTD.
LDTC144WLT1G
SOT-23
NOTES:
A
L
3
1
V
G
2
B S
DIM
A
B
C
D
G
H
J
J
K
L
S
V
1. DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M,1982
2. CONTROLLING DIMENSION: INCH.
INCHES
MIN
MAX
0.1102
0.1197
0.0472
0.0551
0.0350
0.0440
0.0150
0.0200
0.0701
0.0807
0.0005
0.0040
0.0034
0.0140
0.0350
0.0830
0.0177
0.0070
0.0285
0.0401
0.1039
0.0236
MILLIMETERS
MIN
MAX
2.80
3.04
1.20
1.40
0.89
1.11
0.37
0.50
1.78
2.04
0.013
0.100
0.085
0.35
0.89
2.10
0.45
0.177
0.69
1.02
2.64
0.60
C
D
H
K
0.037
0.95
0.037
0.95
0.079
2.0
0.035
0.9
0.031
0.8
inches
mm
3/3
stm32/stm8
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